diff --git a/Emby.Dlna/ContentDirectory/ContentDirectoryService.cs b/Emby.Dlna/ContentDirectory/ContentDirectoryService.cs
index 319a9f5500..389e971a66 100644
--- a/Emby.Dlna/ContentDirectory/ContentDirectoryService.cs
+++ b/Emby.Dlna/ContentDirectory/ContentDirectoryService.cs
@@ -141,7 +141,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 var user = _userManager.GetUserById(Guid.Parse(profile.UserId));
 
-                if (user != null)
+                if (user is not null)
                 {
                     return user;
                 }
@@ -153,7 +153,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 var user = _userManager.GetUserById(Guid.Parse(userId));
 
-                if (user != null)
+                if (user is not null)
                 {
                     return user;
                 }
diff --git a/Emby.Dlna/ContentDirectory/ControlHandler.cs b/Emby.Dlna/ContentDirectory/ControlHandler.cs
index fc69960fd6..abd594a3a1 100644
--- a/Emby.Dlna/ContentDirectory/ControlHandler.cs
+++ b/Emby.Dlna/ContentDirectory/ControlHandler.cs
@@ -1048,7 +1048,7 @@ namespace Emby.Dlna.ContentDirectory
                     ParentId = parent?.Id ?? Guid.Empty,
                     GroupItems = true
                 },
-                query.DtoOptions).Select(i => i.Item1 ?? i.Item2.FirstOrDefault()).Where(i => i != null).ToArray();
+                query.DtoOptions).Select(i => i.Item1 ?? i.Item2.FirstOrDefault()).Where(i => i is not null).ToArray();
 
             return ToResult(query.StartIndex, items);
         }
diff --git a/Emby.Dlna/Didl/DidlBuilder.cs b/Emby.Dlna/Didl/DidlBuilder.cs
index 8e3a335c66..e9041186f4 100644
--- a/Emby.Dlna/Didl/DidlBuilder.cs
+++ b/Emby.Dlna/Didl/DidlBuilder.cs
@@ -153,7 +153,7 @@ namespace Emby.Dlna.Didl
             writer.WriteAttributeString("restricted", "1");
             writer.WriteAttributeString("id", clientId);
 
-            if (context != null)
+            if (context is not null)
             {
                 writer.WriteAttributeString("parentID", GetClientId(context, contextStubType));
             }
@@ -191,7 +191,7 @@ namespace Emby.Dlna.Didl
 
         private void AddVideoResource(XmlWriter writer, BaseItem video, string deviceId, Filter filter, StreamInfo streamInfo = null)
         {
-            if (streamInfo == null)
+            if (streamInfo is null)
             {
                 var sources = _mediaSourceManager.GetStaticMediaSources(video, true, _user);
 
@@ -263,7 +263,7 @@ namespace Emby.Dlna.Didl
                 .FirstOrDefault(i => string.Equals(info.Format, i.Format, StringComparison.OrdinalIgnoreCase)
                                     && i.Method == SubtitleDeliveryMethod.External);
 
-            if (subtitleProfile == null)
+            if (subtitleProfile is null)
             {
                 return false;
             }
@@ -392,7 +392,7 @@ namespace Emby.Dlna.Didl
 
             var filename = url.Substring(0, url.IndexOf('?', StringComparison.Ordinal));
 
-            var mimeType = mediaProfile == null || string.IsNullOrEmpty(mediaProfile.MimeType)
+            var mimeType = mediaProfile is null || string.IsNullOrEmpty(mediaProfile.MimeType)
                ? MimeTypes.GetMimeType(filename)
                : mediaProfile.MimeType;
 
@@ -533,7 +533,7 @@ namespace Emby.Dlna.Didl
         {
             writer.WriteStartElement(string.Empty, "res", NsDidl);
 
-            if (streamInfo == null)
+            if (streamInfo is null)
             {
                 var sources = _mediaSourceManager.GetStaticMediaSources(audio, true, _user);
 
@@ -598,7 +598,7 @@ namespace Emby.Dlna.Didl
 
             var filename = url.Substring(0, url.IndexOf('?', StringComparison.Ordinal));
 
-            var mimeType = mediaProfile == null || string.IsNullOrEmpty(mediaProfile.MimeType)
+            var mimeType = mediaProfile is null || string.IsNullOrEmpty(mediaProfile.MimeType)
                 ? MimeTypes.GetMimeType(filename)
                 : mediaProfile.MimeType;
 
@@ -652,7 +652,7 @@ namespace Emby.Dlna.Didl
             {
                 writer.WriteAttributeString("id", clientId);
 
-                if (context != null)
+                if (context is not null)
                 {
                     writer.WriteAttributeString("parentID", GetClientId(context, null));
                 }
@@ -695,13 +695,13 @@ namespace Emby.Dlna.Didl
             }
 
             // Not a samsung device
-            if (secAttribute == null)
+            if (secAttribute is null)
             {
                 return;
             }
 
             var userdata = _userDataManager.GetUserData(user, item);
-            var playbackPositionTicks = (streamInfo != null && streamInfo.StartPositionTicks > 0) ? streamInfo.StartPositionTicks : userdata.PlaybackPositionTicks;
+            var playbackPositionTicks = (streamInfo is not null && streamInfo.StartPositionTicks > 0) ? streamInfo.StartPositionTicks : userdata.PlaybackPositionTicks;
 
             if (playbackPositionTicks > 0)
             {
@@ -909,14 +909,14 @@ namespace Emby.Dlna.Didl
                     AddValue(writer, "dc", "creator", artist, NsDc);
 
                     // If it doesn't support album artists (musicvideo), then tag as both
-                    if (hasAlbumArtists == null)
+                    if (hasAlbumArtists is null)
                     {
                         AddAlbumArtist(writer, artist);
                     }
                 }
             }
 
-            if (hasAlbumArtists != null)
+            if (hasAlbumArtists is not null)
             {
                 foreach (var albumArtist in hasAlbumArtists.AlbumArtists)
                 {
@@ -973,7 +973,7 @@ namespace Emby.Dlna.Didl
         {
             ImageDownloadInfo imageInfo = GetImageInfo(item);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return;
             }
@@ -1036,7 +1036,7 @@ namespace Emby.Dlna.Didl
         {
             var imageInfo = GetImageInfo(item);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return;
             }
@@ -1093,7 +1093,7 @@ namespace Emby.Dlna.Didl
             if (item is Audio audioItem)
             {
                 var album = audioItem.AlbumEntity;
-                return album != null && album.HasImage(ImageType.Primary)
+                return album is not null && album.HasImage(ImageType.Primary)
                     ? GetImageInfo(album, ImageType.Primary)
                     : null;
             }
@@ -1106,7 +1106,7 @@ namespace Emby.Dlna.Didl
 
             // For other item types check parents, but be aware that image retrieved from a parent may be not suitable for this media item.
             var parentWithImage = GetFirstParentWithImageBelowUserRoot(item);
-            if (parentWithImage != null)
+            if (parentWithImage is not null)
             {
                 return GetImageInfo(parentWithImage, ImageType.Primary);
             }
@@ -1116,7 +1116,7 @@ namespace Emby.Dlna.Didl
 
         private BaseItem GetFirstParentWithImageBelowUserRoot(BaseItem item)
         {
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
diff --git a/Emby.Dlna/DlnaManager.cs b/Emby.Dlna/DlnaManager.cs
index 2ea2c130f2..b1ee43305b 100644
--- a/Emby.Dlna/DlnaManager.cs
+++ b/Emby.Dlna/DlnaManager.cs
@@ -105,9 +105,9 @@ namespace Emby.Dlna
             ArgumentNullException.ThrowIfNull(deviceInfo);
 
             var profile = GetProfiles()
-                .FirstOrDefault(i => i.Identification != null && IsMatch(deviceInfo, i.Identification));
+                .FirstOrDefault(i => i.Identification is not null && IsMatch(deviceInfo, i.Identification));
 
-            if (profile == null)
+            if (profile is null)
             {
                 _logger.LogInformation("No matching device profile found. The default will need to be used. \n{@Profile}", deviceInfo);
             }
@@ -171,8 +171,8 @@ namespace Emby.Dlna
         {
             ArgumentNullException.ThrowIfNull(headers);
 
-            var profile = GetProfiles().FirstOrDefault(i => i.Identification != null && IsMatch(headers, i.Identification));
-            if (profile == null)
+            var profile = GetProfiles().FirstOrDefault(i => i.Identification is not null && IsMatch(headers, i.Identification));
+            if (profile is null)
             {
                 _logger.LogDebug("No matching device profile found. {@Headers}", headers);
             }
@@ -224,7 +224,7 @@ namespace Emby.Dlna
                 return _fileSystem.GetFilePaths(path)
                     .Where(i => string.Equals(Path.GetExtension(i), ".xml", StringComparison.OrdinalIgnoreCase))
                     .Select(i => ParseProfileFile(i, type))
-                    .Where(i => i != null)
+                    .Where(i => i is not null)
                     .ToList()!; // We just filtered out all the nulls
             }
             catch (IOException)
@@ -272,7 +272,7 @@ namespace Emby.Dlna
 
             var info = GetProfileInfosInternal().FirstOrDefault(i => string.Equals(i.Info.Id, id, StringComparison.OrdinalIgnoreCase));
 
-            if (info == null)
+            if (info is null)
             {
                 return null;
             }
@@ -470,7 +470,7 @@ namespace Emby.Dlna
 
             var resource = GetType().Namespace + ".Images." + filename.ToLowerInvariant();
             var stream = _assembly.GetManifestResourceStream(resource);
-            if (stream == null)
+            if (stream is null)
             {
                 return null;
             }
diff --git a/Emby.Dlna/Eventing/DlnaEventManager.cs b/Emby.Dlna/Eventing/DlnaEventManager.cs
index 68895a7fed..c0eacf5d83 100644
--- a/Emby.Dlna/Eventing/DlnaEventManager.cs
+++ b/Emby.Dlna/Eventing/DlnaEventManager.cs
@@ -35,7 +35,7 @@ namespace Emby.Dlna.Eventing
         public EventSubscriptionResponse RenewEventSubscription(string subscriptionId, string notificationType, string requestedTimeoutString, string callbackUrl)
         {
             var subscription = GetSubscription(subscriptionId, false);
-            if (subscription != null)
+            if (subscription is not null)
             {
                 subscription.TimeoutSeconds = ParseTimeout(requestedTimeoutString) ?? 300;
                 int timeoutSeconds = subscription.TimeoutSeconds;
diff --git a/Emby.Dlna/Main/DlnaEntryPoint.cs b/Emby.Dlna/Main/DlnaEntryPoint.cs
index 15021c19d6..2dc079254a 100644
--- a/Emby.Dlna/Main/DlnaEntryPoint.cs
+++ b/Emby.Dlna/Main/DlnaEntryPoint.cs
@@ -199,7 +199,7 @@ namespace Emby.Dlna.Main
         {
             try
             {
-                if (_communicationsServer == null)
+                if (_communicationsServer is null)
                 {
                     var enableMultiSocketBinding = OperatingSystem.IsWindows() ||
                                                    OperatingSystem.IsLinux();
@@ -222,7 +222,7 @@ namespace Emby.Dlna.Main
         {
             try
             {
-                if (communicationsServer != null)
+                if (communicationsServer is not null)
                 {
                     ((DeviceDiscovery)_deviceDiscovery).Start(communicationsServer);
                 }
@@ -253,7 +253,7 @@ namespace Emby.Dlna.Main
                 return;
             }
 
-            if (_publisher != null)
+            if (_publisher is not null)
             {
                 return;
             }
@@ -382,7 +382,7 @@ namespace Emby.Dlna.Main
         {
             lock (_syncLock)
             {
-                if (_manager != null)
+                if (_manager is not null)
                 {
                     return;
                 }
@@ -417,7 +417,7 @@ namespace Emby.Dlna.Main
         {
             lock (_syncLock)
             {
-                if (_manager != null)
+                if (_manager is not null)
                 {
                     try
                     {
@@ -436,7 +436,7 @@ namespace Emby.Dlna.Main
 
         public void DisposeDevicePublisher()
         {
-            if (_publisher != null)
+            if (_publisher is not null)
             {
                 _logger.LogInformation("Disposing SsdpDevicePublisher");
                 _publisher.Dispose();
@@ -456,7 +456,7 @@ namespace Emby.Dlna.Main
             DisposePlayToManager();
             DisposeDeviceDiscovery();
 
-            if (_communicationsServer != null)
+            if (_communicationsServer is not null)
             {
                 _logger.LogInformation("Disposing SsdpCommunicationsServer");
                 _communicationsServer.Dispose();
diff --git a/Emby.Dlna/PlayTo/Device.cs b/Emby.Dlna/PlayTo/Device.cs
index 34981bd3f4..fc000334a1 100644
--- a/Emby.Dlna/PlayTo/Device.cs
+++ b/Emby.Dlna/PlayTo/Device.cs
@@ -220,14 +220,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetMute");
-            if (command == null)
+            if (command is null)
             {
                 return false;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return false;
             }
@@ -260,14 +260,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetVolume");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -291,14 +291,14 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Seek");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -324,7 +324,7 @@ namespace Emby.Dlna.PlayTo
             _logger.LogDebug("{0} - SetAvTransport Uri: {1} DlnaHeaders: {2}", Properties.Name, url, header);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetAVTransportURI");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -337,7 +337,7 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -381,7 +381,7 @@ namespace Emby.Dlna.PlayTo
             _logger.LogDebug("{PropertyName} - SetNextAvTransport Uri: {Url} DlnaHeaders: {Header}", Properties.Name, url, header);
 
             var command = avCommands.ServiceActions.FirstOrDefault(c => string.Equals(c.Name, "SetNextAVTransportURI", StringComparison.OrdinalIgnoreCase));
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -394,7 +394,7 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -418,13 +418,13 @@ namespace Emby.Dlna.PlayTo
         private Task SetPlay(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Play");
-            if (command == null)
+            if (command is null)
             {
                 return Task.CompletedTask;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -440,7 +440,7 @@ namespace Emby.Dlna.PlayTo
         public async Task SetPlay(CancellationToken cancellationToken)
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
-            if (avCommands == null)
+            if (avCommands is null)
             {
                 return;
             }
@@ -455,7 +455,7 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Stop");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -479,7 +479,7 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Pause");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -513,7 +513,7 @@ namespace Emby.Dlna.PlayTo
 
                 var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-                if (avCommands == null)
+                if (avCommands is null)
                 {
                     return;
                 }
@@ -538,12 +538,12 @@ namespace Emby.Dlna.PlayTo
 
                         var currentObject = tuple.Track;
 
-                        if (tuple.Success && currentObject == null)
+                        if (tuple.Success && currentObject is null)
                         {
                             currentObject = await GetMediaInfo(avCommands, cancellationToken).ConfigureAwait(false);
                         }
 
-                        if (currentObject != null)
+                        if (currentObject is not null)
                         {
                             UpdateMediaInfo(currentObject, transportState.Value);
                         }
@@ -585,7 +585,7 @@ namespace Emby.Dlna.PlayTo
                 if (_connectFailureCount >= 3)
                 {
                     var action = OnDeviceUnavailable;
-                    if (action != null)
+                    if (action is not null)
                     {
                         _logger.LogDebug("Disposing device due to loss of connection");
                         action();
@@ -607,14 +607,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetVolume");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return;
             }
@@ -626,12 +626,12 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return;
             }
 
-            var volume = result.Document.Descendants(UPnpNamespaces.RenderingControl + "GetVolumeResponse").Select(i => i.Element("CurrentVolume")).FirstOrDefault(i => i != null);
+            var volume = result.Document.Descendants(UPnpNamespaces.RenderingControl + "GetVolumeResponse").Select(i => i.Element("CurrentVolume")).FirstOrDefault(i => i is not null);
             var volumeValue = volume?.Value;
 
             if (string.IsNullOrWhiteSpace(volumeValue))
@@ -657,14 +657,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetMute");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return;
             }
@@ -676,14 +676,14 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return;
             }
 
             var valueNode = result.Document.Descendants(UPnpNamespaces.RenderingControl + "GetMuteResponse")
                                             .Select(i => i.Element("CurrentMute"))
-                                            .FirstOrDefault(i => i != null);
+                                            .FirstOrDefault(i => i is not null);
 
             IsMuted = string.Equals(valueNode?.Value, "1", StringComparison.OrdinalIgnoreCase);
         }
@@ -691,13 +691,13 @@ namespace Emby.Dlna.PlayTo
         private async Task<TransportState?> GetTransportInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetTransportInfo");
-            if (command == null)
+            if (command is null)
             {
                 return null;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 return null;
             }
@@ -709,17 +709,17 @@ namespace Emby.Dlna.PlayTo
                 avCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return null;
             }
 
             var transportState =
-                result.Document.Descendants(UPnpNamespaces.AvTransport + "GetTransportInfoResponse").Select(i => i.Element("CurrentTransportState")).FirstOrDefault(i => i != null);
+                result.Document.Descendants(UPnpNamespaces.AvTransport + "GetTransportInfoResponse").Select(i => i.Element("CurrentTransportState")).FirstOrDefault(i => i is not null);
 
             var transportStateValue = transportState?.Value;
 
-            if (transportStateValue != null
+            if (transportStateValue is not null
                 && Enum.TryParse(transportStateValue, true, out TransportState state))
             {
                 return state;
@@ -731,19 +731,19 @@ namespace Emby.Dlna.PlayTo
         private async Task<UBaseObject> GetMediaInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetMediaInfo");
-            if (command == null)
+            if (command is null)
             {
                 return null;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
-            if (rendererCommands == null)
+            if (rendererCommands is null)
             {
                 return null;
             }
@@ -755,14 +755,14 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return null;
             }
 
             var track = result.Document.Descendants("CurrentURIMetaData").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 return null;
             }
@@ -778,7 +778,7 @@ namespace Emby.Dlna.PlayTo
 
             track = result.Document.Descendants("CurrentURI").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 return null;
             }
@@ -801,21 +801,21 @@ namespace Emby.Dlna.PlayTo
         private async Task<(bool Success, UBaseObject Track)> GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetPositionInfo");
-            if (command == null)
+            if (command is null)
             {
                 return (false, null);
             }
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            if (rendererCommands == null)
+            if (rendererCommands is null)
             {
                 return (false, null);
             }
@@ -827,15 +827,15 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return (false, null);
             }
 
-            var trackUriElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackURI")).FirstOrDefault(i => i != null);
+            var trackUriElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackURI")).FirstOrDefault(i => i is not null);
             var trackUri = trackUriElem?.Value;
 
-            var durationElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackDuration")).FirstOrDefault(i => i != null);
+            var durationElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackDuration")).FirstOrDefault(i => i is not null);
             var duration = durationElem?.Value;
 
             if (!string.IsNullOrWhiteSpace(duration)
@@ -848,7 +848,7 @@ namespace Emby.Dlna.PlayTo
                 Duration = null;
             }
 
-            var positionElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("RelTime")).FirstOrDefault(i => i != null);
+            var positionElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("RelTime")).FirstOrDefault(i => i is not null);
             var position = positionElem?.Value;
 
             if (!string.IsNullOrWhiteSpace(position) && !string.Equals(position, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
@@ -858,7 +858,7 @@ namespace Emby.Dlna.PlayTo
 
             var track = result.Document.Descendants("TrackMetaData").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 // If track is null, some vendors do this, use GetMediaInfo instead.
                 return (true, null);
@@ -882,7 +882,7 @@ namespace Emby.Dlna.PlayTo
                 _logger.LogError(ex, "Uncaught exception while parsing xml");
             }
 
-            if (uPnpResponse == null)
+            if (uPnpResponse is null)
             {
                 _logger.LogError("Failed to parse xml: \n {Xml}", trackString);
                 return (true, null);
@@ -959,11 +959,11 @@ namespace Emby.Dlna.PlayTo
 
             var resElement = container.Element(UPnpNamespaces.Res);
 
-            if (resElement != null)
+            if (resElement is not null)
             {
                 var info = resElement.Attribute(UPnpNamespaces.ProtocolInfo);
 
-                if (info != null && !string.IsNullOrWhiteSpace(info.Value))
+                if (info is not null && !string.IsNullOrWhiteSpace(info.Value))
                 {
                     return info.Value.Split(':');
                 }
@@ -974,7 +974,7 @@ namespace Emby.Dlna.PlayTo
 
         private async Task<TransportCommands> GetAVProtocolAsync(CancellationToken cancellationToken)
         {
-            if (AvCommands != null)
+            if (AvCommands is not null)
             {
                 return AvCommands;
             }
@@ -985,7 +985,7 @@ namespace Emby.Dlna.PlayTo
             }
 
             var avService = GetAvTransportService();
-            if (avService == null)
+            if (avService is null)
             {
                 return null;
             }
@@ -995,7 +995,7 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new DlnaHttpClient(_logger, _httpClientFactory);
 
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1006,7 +1006,7 @@ namespace Emby.Dlna.PlayTo
 
         private async Task<TransportCommands> GetRenderingProtocolAsync(CancellationToken cancellationToken)
         {
-            if (RendererCommands != null)
+            if (RendererCommands is not null)
             {
                 return RendererCommands;
             }
@@ -1017,7 +1017,7 @@ namespace Emby.Dlna.PlayTo
             }
 
             var avService = GetServiceRenderingControl();
-            if (avService == null)
+            if (avService is null)
             {
                 throw new ArgumentException("Device AvService is null");
             }
@@ -1027,7 +1027,7 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new DlnaHttpClient(_logger, _httpClientFactory);
             _logger.LogDebug("Dlna Device.GetRenderingProtocolAsync");
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1062,7 +1062,7 @@ namespace Emby.Dlna.PlayTo
             var ssdpHttpClient = new DlnaHttpClient(logger, httpClientFactory);
 
             var document = await ssdpHttpClient.GetDataAsync(url.ToString(), cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1070,13 +1070,13 @@ namespace Emby.Dlna.PlayTo
             var friendlyNames = new List<string>();
 
             var name = document.Descendants(UPnpNamespaces.Ud.GetName("friendlyName")).FirstOrDefault();
-            if (name != null && !string.IsNullOrWhiteSpace(name.Value))
+            if (name is not null && !string.IsNullOrWhiteSpace(name.Value))
             {
                 friendlyNames.Add(name.Value);
             }
 
             var room = document.Descendants(UPnpNamespaces.Ud.GetName("roomName")).FirstOrDefault();
-            if (room != null && !string.IsNullOrWhiteSpace(room.Value))
+            if (room is not null && !string.IsNullOrWhiteSpace(room.Value))
             {
                 friendlyNames.Add(room.Value);
             }
@@ -1088,74 +1088,74 @@ namespace Emby.Dlna.PlayTo
             };
 
             var model = document.Descendants(UPnpNamespaces.Ud.GetName("modelName")).FirstOrDefault();
-            if (model != null)
+            if (model is not null)
             {
                 deviceProperties.ModelName = model.Value;
             }
 
             var modelNumber = document.Descendants(UPnpNamespaces.Ud.GetName("modelNumber")).FirstOrDefault();
-            if (modelNumber != null)
+            if (modelNumber is not null)
             {
                 deviceProperties.ModelNumber = modelNumber.Value;
             }
 
             var uuid = document.Descendants(UPnpNamespaces.Ud.GetName("UDN")).FirstOrDefault();
-            if (uuid != null)
+            if (uuid is not null)
             {
                 deviceProperties.UUID = uuid.Value;
             }
 
             var manufacturer = document.Descendants(UPnpNamespaces.Ud.GetName("manufacturer")).FirstOrDefault();
-            if (manufacturer != null)
+            if (manufacturer is not null)
             {
                 deviceProperties.Manufacturer = manufacturer.Value;
             }
 
             var manufacturerUrl = document.Descendants(UPnpNamespaces.Ud.GetName("manufacturerURL")).FirstOrDefault();
-            if (manufacturerUrl != null)
+            if (manufacturerUrl is not null)
             {
                 deviceProperties.ManufacturerUrl = manufacturerUrl.Value;
             }
 
             var presentationUrl = document.Descendants(UPnpNamespaces.Ud.GetName("presentationURL")).FirstOrDefault();
-            if (presentationUrl != null)
+            if (presentationUrl is not null)
             {
                 deviceProperties.PresentationUrl = presentationUrl.Value;
             }
 
             var modelUrl = document.Descendants(UPnpNamespaces.Ud.GetName("modelURL")).FirstOrDefault();
-            if (modelUrl != null)
+            if (modelUrl is not null)
             {
                 deviceProperties.ModelUrl = modelUrl.Value;
             }
 
             var serialNumber = document.Descendants(UPnpNamespaces.Ud.GetName("serialNumber")).FirstOrDefault();
-            if (serialNumber != null)
+            if (serialNumber is not null)
             {
                 deviceProperties.SerialNumber = serialNumber.Value;
             }
 
             var modelDescription = document.Descendants(UPnpNamespaces.Ud.GetName("modelDescription")).FirstOrDefault();
-            if (modelDescription != null)
+            if (modelDescription is not null)
             {
                 deviceProperties.ModelDescription = modelDescription.Value;
             }
 
             var icon = document.Descendants(UPnpNamespaces.Ud.GetName("icon")).FirstOrDefault();
-            if (icon != null)
+            if (icon is not null)
             {
                 deviceProperties.Icon = CreateIcon(icon);
             }
 
             foreach (var services in document.Descendants(UPnpNamespaces.Ud.GetName("serviceList")))
             {
-                if (services == null)
+                if (services is null)
                 {
                     continue;
                 }
 
                 var servicesList = services.Descendants(UPnpNamespaces.Ud.GetName("service"));
-                if (servicesList == null)
+                if (servicesList is null)
                 {
                     continue;
                 }
@@ -1164,7 +1164,7 @@ namespace Emby.Dlna.PlayTo
                 {
                     var service = Create(element);
 
-                    if (service != null)
+                    if (service is not null)
                     {
                         deviceProperties.Services.Add(service);
                     }
@@ -1212,14 +1212,14 @@ namespace Emby.Dlna.PlayTo
             var previousMediaInfo = CurrentMediaInfo;
             CurrentMediaInfo = mediaInfo;
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
-                if (previousMediaInfo != null)
+                if (previousMediaInfo is not null)
                 {
                     OnPlaybackStop(previousMediaInfo);
                 }
             }
-            else if (previousMediaInfo == null)
+            else if (previousMediaInfo is null)
             {
                 if (state != TransportState.STOPPED)
                 {
diff --git a/Emby.Dlna/PlayTo/PlayToController.cs b/Emby.Dlna/PlayTo/PlayToController.cs
index 65367e24f2..d46a501c79 100644
--- a/Emby.Dlna/PlayTo/PlayToController.cs
+++ b/Emby.Dlna/PlayTo/PlayToController.cs
@@ -84,7 +84,7 @@ namespace Emby.Dlna.PlayTo
             _mediaEncoder = mediaEncoder;
         }
 
-        public bool IsSessionActive => !_disposed && _device != null;
+        public bool IsSessionActive => !_disposed && _device is not null;
 
         public bool SupportsMediaControl => IsSessionActive;
 
@@ -156,7 +156,7 @@ namespace Emby.Dlna.PlayTo
             try
             {
                 var streamInfo = StreamParams.ParseFromUrl(e.OldMediaInfo.Url, _libraryManager, _mediaSourceManager);
-                if (streamInfo.Item != null)
+                if (streamInfo.Item is not null)
                 {
                     var positionTicks = GetProgressPositionTicks(streamInfo);
 
@@ -164,7 +164,7 @@ namespace Emby.Dlna.PlayTo
                 }
 
                 streamInfo = StreamParams.ParseFromUrl(e.NewMediaInfo.Url, _libraryManager, _mediaSourceManager);
-                if (streamInfo.Item == null)
+                if (streamInfo.Item is null)
                 {
                     return;
                 }
@@ -199,7 +199,7 @@ namespace Emby.Dlna.PlayTo
             {
                 var streamInfo = StreamParams.ParseFromUrl(e.MediaInfo.Url, _libraryManager, _mediaSourceManager);
 
-                if (streamInfo.Item == null)
+                if (streamInfo.Item is null)
                 {
                     return;
                 }
@@ -210,7 +210,7 @@ namespace Emby.Dlna.PlayTo
 
                 var mediaSource = await streamInfo.GetMediaSource(CancellationToken.None).ConfigureAwait(false);
 
-                var duration = mediaSource == null
+                var duration = mediaSource is null
                     ? _device.Duration?.Ticks
                     : mediaSource.RunTimeTicks;
 
@@ -268,7 +268,7 @@ namespace Emby.Dlna.PlayTo
             {
                 var info = StreamParams.ParseFromUrl(e.MediaInfo.Url, _libraryManager, _mediaSourceManager);
 
-                if (info.Item != null)
+                if (info.Item is not null)
                 {
                     var progress = GetProgressInfo(info);
 
@@ -299,7 +299,7 @@ namespace Emby.Dlna.PlayTo
 
                 var info = StreamParams.ParseFromUrl(mediaUrl, _libraryManager, _mediaSourceManager);
 
-                if (info.Item != null)
+                if (info.Item is not null)
                 {
                     var progress = GetProgressInfo(info);
 
@@ -441,11 +441,11 @@ namespace Emby.Dlna.PlayTo
         {
             var media = _device.CurrentMediaInfo;
 
-            if (media != null)
+            if (media is not null)
             {
                 var info = StreamParams.ParseFromUrl(media.Url, _libraryManager, _mediaSourceManager);
 
-                if (info.Item != null && !EnableClientSideSeek(info))
+                if (info.Item is not null && !EnableClientSideSeek(info))
                 {
                     var user = _session.UserId.Equals(default)
                         ? null
@@ -760,11 +760,11 @@ namespace Emby.Dlna.PlayTo
         {
             var media = _device.CurrentMediaInfo;
 
-            if (media != null)
+            if (media is not null)
             {
                 var info = StreamParams.ParseFromUrl(media.Url, _libraryManager, _mediaSourceManager);
 
-                if (info.Item != null)
+                if (info.Item is not null)
                 {
                     var newPosition = GetProgressPositionTicks(info) ?? 0;
 
@@ -791,11 +791,11 @@ namespace Emby.Dlna.PlayTo
         {
             var media = _device.CurrentMediaInfo;
 
-            if (media != null)
+            if (media is not null)
             {
                 var info = StreamParams.ParseFromUrl(media.Url, _libraryManager, _mediaSourceManager);
 
-                if (info.Item != null)
+                if (info.Item is not null)
                 {
                     var newPosition = GetProgressPositionTicks(info) ?? 0;
 
@@ -865,7 +865,7 @@ namespace Emby.Dlna.PlayTo
                 throw new ObjectDisposedException(GetType().Name);
             }
 
-            if (_device == null)
+            if (_device is null)
             {
                 return Task.CompletedTask;
             }
@@ -916,7 +916,7 @@ namespace Emby.Dlna.PlayTo
 
             public async Task<MediaSourceInfo> GetMediaSource(CancellationToken cancellationToken)
             {
-                if (_mediaSource != null)
+                if (_mediaSource is not null)
                 {
                     return _mediaSource;
                 }
@@ -926,7 +926,7 @@ namespace Emby.Dlna.PlayTo
                     return null;
                 }
 
-                if (_mediaSourceManager != null)
+                if (_mediaSourceManager is not null)
                 {
                     _mediaSource = await _mediaSourceManager.GetMediaSource(Item, MediaSourceId, LiveStreamId, false, cancellationToken).ConfigureAwait(false);
                 }
diff --git a/Emby.Dlna/PlayTo/PlayToManager.cs b/Emby.Dlna/PlayTo/PlayToManager.cs
index 294bda5b6a..f4a9a90af4 100644
--- a/Emby.Dlna/PlayTo/PlayToManager.cs
+++ b/Emby.Dlna/PlayTo/PlayToManager.cs
@@ -176,10 +176,10 @@ namespace Emby.Dlna.PlayTo
 
             var controller = sessionInfo.SessionControllers.OfType<PlayToController>().FirstOrDefault();
 
-            if (controller == null)
+            if (controller is null)
             {
                 var device = await Device.CreateuPnpDeviceAsync(uri, _httpClientFactory, _logger, cancellationToken).ConfigureAwait(false);
-                if (device == null)
+                if (device is null)
                 {
                     _logger.LogError("Ignoring device as xml response is invalid.");
                     return;
diff --git a/Emby.Dlna/PlayTo/PlaylistItemFactory.cs b/Emby.Dlna/PlayTo/PlaylistItemFactory.cs
index 6574913032..53cd05cfda 100644
--- a/Emby.Dlna/PlayTo/PlaylistItemFactory.cs
+++ b/Emby.Dlna/PlayTo/PlaylistItemFactory.cs
@@ -29,7 +29,7 @@ namespace Emby.Dlna.PlayTo
             var directPlay = profile.DirectPlayProfiles
                 .FirstOrDefault(i => i.Type == DlnaProfileType.Photo && IsSupported(i, item));
 
-            if (directPlay != null)
+            if (directPlay is not null)
             {
                 playlistItem.StreamInfo.PlayMethod = PlayMethod.DirectStream;
                 playlistItem.StreamInfo.Container = Path.GetExtension(item.Path);
@@ -40,7 +40,7 @@ namespace Emby.Dlna.PlayTo
             var transcodingProfile = profile.TranscodingProfiles
                 .FirstOrDefault(i => i.Type == DlnaProfileType.Photo);
 
-            if (transcodingProfile != null)
+            if (transcodingProfile is not null)
             {
                 playlistItem.StreamInfo.PlayMethod = PlayMethod.Transcode;
                 playlistItem.StreamInfo.Container = "." + transcodingProfile.Container.TrimStart('.');
diff --git a/Emby.Dlna/PlayTo/TransportCommands.cs b/Emby.Dlna/PlayTo/TransportCommands.cs
index 9c3a9103be..c463727329 100644
--- a/Emby.Dlna/PlayTo/TransportCommands.cs
+++ b/Emby.Dlna/PlayTo/TransportCommands.cs
@@ -31,7 +31,7 @@ namespace Emby.Dlna.PlayTo
 
             var stateValues = document.Descendants(UPnpNamespaces.ServiceStateTable).FirstOrDefault();
 
-            if (stateValues != null)
+            if (stateValues is not null)
             {
                 foreach (var container in stateValues.Elements(UPnpNamespaces.Svc + "stateVariable"))
                 {
@@ -77,7 +77,7 @@ namespace Emby.Dlna.PlayTo
             var element = container.Descendants(UPnpNamespaces.Svc + "allowedValueList")
                 .FirstOrDefault();
 
-            if (element != null)
+            if (element is not null)
             {
                 var values = element.Descendants(UPnpNamespaces.Svc + "allowedValue");
 
@@ -167,7 +167,7 @@ namespace Emby.Dlna.PlayTo
         {
             var state = StateVariables.FirstOrDefault(a => string.Equals(a.Name, argument.RelatedStateVariable, StringComparison.OrdinalIgnoreCase));
 
-            if (state != null)
+            if (state is not null)
             {
                 var sendValue = state.AllowedValues.FirstOrDefault(a => string.Equals(a, commandParameter, StringComparison.OrdinalIgnoreCase)) ??
                     (state.AllowedValues.Count > 0 ? state.AllowedValues[0] : value);
diff --git a/Emby.Dlna/Service/BaseControlHandler.cs b/Emby.Dlna/Service/BaseControlHandler.cs
index 9c423b3958..bff5307a49 100644
--- a/Emby.Dlna/Service/BaseControlHandler.cs
+++ b/Emby.Dlna/Service/BaseControlHandler.cs
@@ -173,7 +173,7 @@ namespace Emby.Dlna.Service
                 }
             }
 
-            if (localName != null && namespaceURI != null)
+            if (localName is not null && namespaceURI is not null)
             {
                 return new ControlRequestInfo(localName, namespaceURI);
             }
diff --git a/Emby.Dlna/Ssdp/DeviceDiscovery.cs b/Emby.Dlna/Ssdp/DeviceDiscovery.cs
index 391dda1479..8a4e5ff455 100644
--- a/Emby.Dlna/Ssdp/DeviceDiscovery.cs
+++ b/Emby.Dlna/Ssdp/DeviceDiscovery.cs
@@ -71,7 +71,7 @@ namespace Emby.Dlna.Ssdp
         {
             lock (_syncLock)
             {
-                if (_listenerCount > 0 && _deviceLocator == null && _commsServer != null)
+                if (_listenerCount > 0 && _deviceLocator is null && _commsServer is not null)
                 {
                     _deviceLocator = new SsdpDeviceLocator(_commsServer);
 
@@ -97,7 +97,7 @@ namespace Emby.Dlna.Ssdp
         {
             var originalHeaders = e.DiscoveredDevice.ResponseHeaders;
 
-            var headerDict = originalHeaders == null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
+            var headerDict = originalHeaders is null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
 
             var headers = headerDict.ToDictionary(i => i.Key, i => i.Value.Value.FirstOrDefault(), StringComparer.OrdinalIgnoreCase);
 
@@ -116,7 +116,7 @@ namespace Emby.Dlna.Ssdp
         {
             var originalHeaders = e.DiscoveredDevice.ResponseHeaders;
 
-            var headerDict = originalHeaders == null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
+            var headerDict = originalHeaders is null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
 
             var headers = headerDict.ToDictionary(i => i.Key, i => i.Value.Value.FirstOrDefault(), StringComparer.OrdinalIgnoreCase);
 
@@ -136,7 +136,7 @@ namespace Emby.Dlna.Ssdp
             if (!_disposed)
             {
                 _disposed = true;
-                if (_deviceLocator != null)
+                if (_deviceLocator is not null)
                 {
                     _deviceLocator.Dispose();
                     _deviceLocator = null;
diff --git a/Emby.Drawing/ImageProcessor.cs b/Emby.Drawing/ImageProcessor.cs
index 11256dafde..d2c430415a 100644
--- a/Emby.Drawing/ImageProcessor.cs
+++ b/Emby.Drawing/ImageProcessor.cs
@@ -436,7 +436,7 @@ namespace Emby.Drawing
         /// <inheritdoc />
         public string? GetImageCacheTag(User user)
         {
-            if (user.ProfileImage == null)
+            if (user.ProfileImage is null)
             {
                 return null;
             }
diff --git a/Emby.Naming/AudioBook/AudioBookListResolver.cs b/Emby.Naming/AudioBook/AudioBookListResolver.cs
index 6e491185d8..bdae20b6b2 100644
--- a/Emby.Naming/AudioBook/AudioBookListResolver.cs
+++ b/Emby.Naming/AudioBook/AudioBookListResolver.cs
@@ -69,13 +69,13 @@ namespace Emby.Naming.AudioBook
             extras = new List<AudioBookFileInfo>();
             alternativeVersions = new List<AudioBookFileInfo>();
 
-            var haveChaptersOrPages = stackFiles.Any(x => x.ChapterNumber != null || x.PartNumber != null);
+            var haveChaptersOrPages = stackFiles.Any(x => x.ChapterNumber is not null || x.PartNumber is not null);
             var groupedBy = stackFiles.GroupBy(file => new { file.ChapterNumber, file.PartNumber });
             var nameWithReplacedDots = nameParserResult.Name.Replace(' ', '.');
 
             foreach (var group in groupedBy)
             {
-                if (group.Key.ChapterNumber == null && group.Key.PartNumber == null)
+                if (group.Key.ChapterNumber is null && group.Key.PartNumber is null)
                 {
                     if (group.Count() > 1 || haveChaptersOrPages)
                     {
diff --git a/Emby.Naming/AudioBook/AudioBookNameParser.cs b/Emby.Naming/AudioBook/AudioBookNameParser.cs
index 120482bc2c..97b34199e0 100644
--- a/Emby.Naming/AudioBook/AudioBookNameParser.cs
+++ b/Emby.Naming/AudioBook/AudioBookNameParser.cs
@@ -33,7 +33,7 @@ namespace Emby.Naming.AudioBook
                 var match = new Regex(expression, RegexOptions.IgnoreCase).Match(name);
                 if (match.Success)
                 {
-                    if (result.Name == null)
+                    if (result.Name is null)
                     {
                         var value = match.Groups["name"];
                         if (value.Success)
diff --git a/Emby.Naming/ExternalFiles/ExternalPathParser.cs b/Emby.Naming/ExternalFiles/ExternalPathParser.cs
index 1fa4fa5371..9531296711 100644
--- a/Emby.Naming/ExternalFiles/ExternalPathParser.cs
+++ b/Emby.Naming/ExternalFiles/ExternalPathParser.cs
@@ -94,12 +94,12 @@ namespace Emby.Naming.ExternalFiles
                     // Try to translate to three character code
                     var culture = _localizationManager.FindLanguageInfo(currentSliceWithoutSeparator);
 
-                    if (culture != null && pathInfo.Language == null)
+                    if (culture is not null && pathInfo.Language is null)
                     {
                         pathInfo.Language = culture.ThreeLetterISOLanguageName;
                         extraString = extraString.Replace(currentSlice, string.Empty, StringComparison.OrdinalIgnoreCase);
                     }
-                    else if (culture != null && pathInfo.Language == "hin")
+                    else if (culture is not null && pathInfo.Language == "hin")
                     {
                         // Hindi language code "hi" collides with a hearing impaired flag - use as Hindi only if no other language is set
                         pathInfo.IsHearingImpaired = true;
diff --git a/Emby.Naming/TV/EpisodePathParser.cs b/Emby.Naming/TV/EpisodePathParser.cs
index 6d0597356b..d706be2802 100644
--- a/Emby.Naming/TV/EpisodePathParser.cs
+++ b/Emby.Naming/TV/EpisodePathParser.cs
@@ -76,7 +76,7 @@ namespace Emby.Naming.TV
                 }
             }
 
-            if (result != null && fillExtendedInfo)
+            if (result is not null && fillExtendedInfo)
             {
                 FillAdditional(path, result);
 
diff --git a/Emby.Naming/TV/SeriesPathParser.cs b/Emby.Naming/TV/SeriesPathParser.cs
index 23067e6a44..94b4b5c823 100644
--- a/Emby.Naming/TV/SeriesPathParser.cs
+++ b/Emby.Naming/TV/SeriesPathParser.cs
@@ -28,7 +28,7 @@ namespace Emby.Naming.TV
                 }
             }
 
-            if (result != null)
+            if (result is not null)
             {
                 if (!string.IsNullOrEmpty(result.SeriesName))
                 {
diff --git a/Emby.Naming/Video/ExtraRuleResolver.cs b/Emby.Naming/Video/ExtraRuleResolver.cs
index 0970e509a4..21d0da3642 100644
--- a/Emby.Naming/Video/ExtraRuleResolver.cs
+++ b/Emby.Naming/Video/ExtraRuleResolver.cs
@@ -76,7 +76,7 @@ namespace Emby.Naming.Video
                     }
                 }
 
-                if (result.ExtraType != null)
+                if (result.ExtraType is not null)
                 {
                     return result;
                 }
diff --git a/Emby.Naming/Video/VideoListResolver.cs b/Emby.Naming/Video/VideoListResolver.cs
index 11f82525f3..8048320400 100644
--- a/Emby.Naming/Video/VideoListResolver.cs
+++ b/Emby.Naming/Video/VideoListResolver.cs
@@ -26,7 +26,7 @@ namespace Emby.Naming.Video
             // Filter out all extras, otherwise they could cause stacks to not be resolved
             // See the unit test TestStackedWithTrailer
             var nonExtras = videoInfos
-                .Where(i => i.ExtraType == null)
+                .Where(i => i.ExtraType is null)
                 .Select(i => new FileSystemMetadata { FullName = i.Path, IsDirectory = i.IsDirectory });
 
             var stackResult = StackResolver.Resolve(nonExtras, namingOptions).ToList();
@@ -42,7 +42,7 @@ namespace Emby.Naming.Video
                     continue;
                 }
 
-                if (current.ExtraType == null)
+                if (current.ExtraType is null)
                 {
                     standaloneMedia.Add(current);
                 }
@@ -109,7 +109,7 @@ namespace Emby.Naming.Video
             for (var i = 0; i < videos.Count; i++)
             {
                 var video = videos[i];
-                if (video.ExtraType != null)
+                if (video.ExtraType is not null)
                 {
                     continue;
                 }
diff --git a/Emby.Naming/Video/VideoResolver.cs b/Emby.Naming/Video/VideoResolver.cs
index de8e177d8b..858e9dd2f5 100644
--- a/Emby.Naming/Video/VideoResolver.cs
+++ b/Emby.Naming/Video/VideoResolver.cs
@@ -87,7 +87,7 @@ namespace Emby.Naming.Video
                 name = cleanDateTimeResult.Name;
                 year = cleanDateTimeResult.Year;
 
-                if (extraResult.ExtraType == null
+                if (extraResult.ExtraType is null
                     && TryCleanString(name, namingOptions, out var newName))
                 {
                     name = newName;
diff --git a/Emby.Notifications/NotificationEntryPoint.cs b/Emby.Notifications/NotificationEntryPoint.cs
index 668c059b47..3763b1e922 100644
--- a/Emby.Notifications/NotificationEntryPoint.cs
+++ b/Emby.Notifications/NotificationEntryPoint.cs
@@ -141,7 +141,7 @@ namespace Emby.Notifications
 
             lock (_libraryChangedSyncLock)
             {
-                if (_libraryUpdateTimer == null)
+                if (_libraryUpdateTimer is null)
                 {
                     _libraryUpdateTimer = new Timer(
                         LibraryUpdateTimerCallback,
diff --git a/Emby.Notifications/NotificationManager.cs b/Emby.Notifications/NotificationManager.cs
index ac90cc8ec5..a5a76b2af7 100644
--- a/Emby.Notifications/NotificationManager.cs
+++ b/Emby.Notifications/NotificationManager.cs
@@ -68,7 +68,7 @@ namespace Emby.Notifications
 
             var users = GetUserIds(request, options)
                 .Select(i => _userManager.GetUserById(i))
-                .Where(i => relatedItem == null || relatedItem.IsVisibleStandalone(i))
+                .Where(i => relatedItem is null || relatedItem.IsVisibleStandalone(i))
                 .ToArray();
 
             var title = request.Name;
@@ -113,7 +113,7 @@ namespace Emby.Notifications
                 }
             }
 
-            if (options != null && !string.IsNullOrEmpty(request.NotificationType))
+            if (options is not null && !string.IsNullOrEmpty(request.NotificationType))
             {
                 var config = GetConfiguration();
 
diff --git a/Emby.Photos/PhotoProvider.cs b/Emby.Photos/PhotoProvider.cs
index 16e9b18e2c..f54066c57f 100644
--- a/Emby.Photos/PhotoProvider.cs
+++ b/Emby.Photos/PhotoProvider.cs
@@ -49,7 +49,7 @@ namespace Emby.Photos
             if (item.IsFileProtocol)
             {
                 var file = directoryService.GetFile(item.Path);
-                return file != null && file.LastWriteTimeUtc != item.DateModified;
+                return file is not null && file.LastWriteTimeUtc != item.DateModified;
             }
 
             return false;
@@ -70,20 +70,20 @@ namespace Emby.Photos
                         if (file.GetTag(TagTypes.TiffIFD) is IFDTag tag)
                         {
                             var structure = tag.Structure;
-                            if (structure != null
+                            if (structure is not null
                                 && structure.GetEntry(0, (ushort)IFDEntryTag.ExifIFD) is SubIFDEntry exif)
                             {
                                 var exifStructure = exif.Structure;
-                                if (exifStructure != null)
+                                if (exifStructure is not null)
                                 {
                                     var entry = exifStructure.GetEntry(0, (ushort)ExifEntryTag.ApertureValue) as RationalIFDEntry;
-                                    if (entry != null)
+                                    if (entry is not null)
                                     {
                                         item.Aperture = (double)entry.Value.Numerator / entry.Value.Denominator;
                                     }
 
                                     entry = exifStructure.GetEntry(0, (ushort)ExifEntryTag.ShutterSpeedValue) as RationalIFDEntry;
-                                    if (entry != null)
+                                    if (entry is not null)
                                     {
                                         item.ShutterSpeed = (double)entry.Value.Numerator / entry.Value.Denominator;
                                     }
diff --git a/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs b/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
index 26b4649dd8..985a127d50 100644
--- a/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
+++ b/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
@@ -131,7 +131,7 @@ namespace Emby.Server.Implementations.AppBase
             {
                 _configuration = value;
 
-                _configurationLoaded = value != null;
+                _configurationLoaded = value is not null;
             }
         }
 
@@ -144,7 +144,7 @@ namespace Emby.Server.Implementations.AppBase
         {
             IConfigurationFactory factory = Activator.CreateInstance<T>();
 
-            if (_configurationFactories == null)
+            if (_configurationFactories is null)
             {
                 _configurationFactories = new[] { factory };
             }
@@ -306,7 +306,7 @@ namespace Emby.Server.Implementations.AppBase
                         configurationManager._configurationStores,
                         i => string.Equals(i.Key, k, StringComparison.OrdinalIgnoreCase));
 
-                    if (configurationInfo == null)
+                    if (configurationInfo is null)
                     {
                         throw new ResourceNotFoundException("Configuration with key " + k + " not found.");
                     }
diff --git a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
index f923e59efb..1c84776059 100644
--- a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
+++ b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
@@ -43,7 +43,7 @@ namespace Emby.Server.Implementations.AppBase
             Span<byte> newBytes = stream.GetBuffer().AsSpan(0, (int)stream.Length);
 
             // If the file didn't exist before, or if something has changed, re-save
-            if (buffer == null || !newBytes.SequenceEqual(buffer))
+            if (buffer is null || !newBytes.SequenceEqual(buffer))
             {
                 var directory = Path.GetDirectoryName(path) ?? throw new ArgumentException($"Provided path ({path}) is not valid.", nameof(path));
 
diff --git a/Emby.Server.Implementations/ApplicationHost.cs b/Emby.Server.Implementations/ApplicationHost.cs
index 8e4c13def0..5db3748bf7 100644
--- a/Emby.Server.Implementations/ApplicationHost.cs
+++ b/Emby.Server.Implementations/ApplicationHost.cs
@@ -196,7 +196,7 @@ namespace Emby.Server.Implementations
         /// <summary>
         /// Gets a value indicating whether this instance can self restart.
         /// </summary>
-        public bool CanSelfRestart => _startupOptions.RestartPath != null;
+        public bool CanSelfRestart => _startupOptions.RestartPath is not null;
 
         public bool CoreStartupHasCompleted { get; private set; }
 
@@ -311,7 +311,7 @@ namespace Emby.Server.Implementations
         public X509Certificate2 Certificate { get; private set; }
 
         /// <inheritdoc/>
-        public bool ListenWithHttps => Certificate != null && ConfigurationManager.GetNetworkConfiguration().EnableHttps;
+        public bool ListenWithHttps => Certificate is not null && ConfigurationManager.GetNetworkConfiguration().EnableHttps;
 
         public string FriendlyName =>
             string.IsNullOrEmpty(ConfigurationManager.Configuration.ServerName)
@@ -403,7 +403,7 @@ namespace Emby.Server.Implementations
             // Convert to list so this isn't executed for each iteration
             var parts = GetExportTypes<T>()
                 .Select(CreateInstanceSafe)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .Cast<T>()
                 .ToList();
 
@@ -424,7 +424,7 @@ namespace Emby.Server.Implementations
             // Convert to list so this isn't executed for each iteration
             var parts = GetExportTypes<T>()
                 .Select(i => defaultFunc(i))
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .Cast<T>()
                 .ToList();
 
diff --git a/Emby.Server.Implementations/Channels/ChannelManager.cs b/Emby.Server.Implementations/Channels/ChannelManager.cs
index 6837cce5cc..a961c09e86 100644
--- a/Emby.Server.Implementations/Channels/ChannelManager.cs
+++ b/Emby.Server.Implementations/Channels/ChannelManager.cs
@@ -129,7 +129,7 @@ namespace Emby.Server.Implementations.Channels
         public Task DeleteItem(BaseItem item)
         {
             var internalChannel = _libraryManager.GetItemById(item.ChannelId);
-            if (internalChannel == null)
+            if (internalChannel is null)
             {
                 throw new ArgumentException(nameof(item.ChannelId));
             }
@@ -227,7 +227,7 @@ namespace Emby.Server.Implementations.Channels
                     .ToList();
             }
 
-            if (user != null)
+            if (user is not null)
             {
                 channels = channels.Where(i =>
                 {
@@ -253,7 +253,7 @@ namespace Emby.Server.Implementations.Channels
             if (query.StartIndex.HasValue || query.Limit.HasValue)
             {
                 int startIndex = query.StartIndex ?? 0;
-                int count = query.Limit == null ? totalCount - startIndex : Math.Min(query.Limit.Value, totalCount - startIndex);
+                int count = query.Limit is null ? totalCount - startIndex : Math.Min(query.Limit.Value, totalCount - startIndex);
                 all = all.GetRange(startIndex, count);
             }
 
@@ -355,7 +355,7 @@ namespace Emby.Server.Implementations.Channels
         {
             var path = Path.Combine(item.GetInternalMetadataPath(), "channelmediasourceinfos.json");
 
-            if (mediaSources == null || mediaSources.Count == 0)
+            if (mediaSources is null || mediaSources.Count == 0)
             {
                 try
                 {
@@ -447,7 +447,7 @@ namespace Emby.Server.Implementations.Channels
 
             var item = _libraryManager.GetItemById(id) as Channel;
 
-            if (item == null)
+            if (item is null)
             {
                 item = new Channel
                 {
@@ -739,7 +739,7 @@ namespace Emby.Server.Implementations.Channels
             query.GroupByPresentationUniqueKey = false;
 
             // null if came from cache
-            if (itemsResult != null)
+            if (itemsResult is not null)
             {
                 var items = itemsResult.Items;
                 var itemsLen = items.Count;
@@ -761,7 +761,7 @@ namespace Emby.Server.Implementations.Channels
                 foreach (var deadId in deadIds)
                 {
                     var deadItem = _libraryManager.GetItemById(deadId);
-                    if (deadItem != null)
+                    if (deadItem is not null)
                     {
                         _libraryManager.DeleteItem(
                             deadItem,
@@ -813,7 +813,7 @@ namespace Emby.Server.Implementations.Channels
                 {
                     await using FileStream jsonStream = AsyncFile.OpenRead(cachePath);
                     var cachedResult = await JsonSerializer.DeserializeAsync<ChannelItemResult>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-                    if (cachedResult != null)
+                    if (cachedResult is not null)
                     {
                         return null;
                     }
@@ -836,7 +836,7 @@ namespace Emby.Server.Implementations.Channels
                     {
                         await using FileStream jsonStream = AsyncFile.OpenRead(cachePath);
                         var cachedResult = await JsonSerializer.DeserializeAsync<ChannelItemResult>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-                        if (cachedResult != null)
+                        if (cachedResult is not null)
                         {
                             return null;
                         }
@@ -861,7 +861,7 @@ namespace Emby.Server.Implementations.Channels
 
                 var result = await channel.GetChannelItems(query, cancellationToken).ConfigureAwait(false);
 
-                if (result == null)
+                if (result is null)
                 {
                     throw new InvalidOperationException("Channel returned a null result from GetChannelItems");
                 }
@@ -955,7 +955,7 @@ namespace Emby.Server.Implementations.Channels
                 _logger.LogError(ex, "Error retrieving channel item from database");
             }
 
-            if (item == null)
+            if (item is null)
             {
                 item = new T();
                 isNew = true;
@@ -1156,7 +1156,7 @@ namespace Emby.Server.Implementations.Channels
             {
                 _libraryManager.CreateItem(item, parentFolder);
 
-                if (info.People != null && info.People.Count > 0)
+                if (info.People is not null && info.People.Count > 0)
                 {
                     _libraryManager.UpdatePeople(item, info.People);
                 }
@@ -1193,7 +1193,7 @@ namespace Emby.Server.Implementations.Channels
             var result = GetAllChannels()
                 .FirstOrDefault(i => GetInternalChannelId(i.Name).Equals(channel.ChannelId) || string.Equals(i.Name, channel.Name, StringComparison.OrdinalIgnoreCase));
 
-            if (result == null)
+            if (result is null)
             {
                 throw new ResourceNotFoundException("No channel provider found for channel " + channel.Name);
             }
@@ -1206,7 +1206,7 @@ namespace Emby.Server.Implementations.Channels
             var result = GetAllChannels()
                 .FirstOrDefault(i => internalChannelId.Equals(GetInternalChannelId(i.Name)));
 
-            if (result == null)
+            if (result is null)
             {
                 throw new ResourceNotFoundException("No channel provider found for channel id " + internalChannelId);
             }
diff --git a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
index ca84094024..c31bb4fb97 100644
--- a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
+++ b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
@@ -59,7 +59,7 @@ namespace Emby.Server.Implementations.Collections
                     var episode = subItem as Episode;
 
                     var series = episode?.Series;
-                    if (series != null && series.HasImage(ImageType.Primary))
+                    if (series is not null && series.HasImage(ImageType.Primary))
                     {
                         return series;
                     }
@@ -71,7 +71,7 @@ namespace Emby.Server.Implementations.Collections
 
                     var parent = subItem.GetOwner() ?? subItem.GetParent();
 
-                    if (parent != null && parent.HasImage(ImageType.Primary))
+                    if (parent is not null && parent.HasImage(ImageType.Primary))
                     {
                         if (parent is MusicAlbum)
                         {
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Collections
 
                     return null;
                 })
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .GroupBy(x => x!.Id) // We removed the null values
                 .Select(x => x.First())
                 .ToList()!; // Again... the list doesn't contain any null values
diff --git a/Emby.Server.Implementations/Collections/CollectionManager.cs b/Emby.Server.Implementations/Collections/CollectionManager.cs
index 187e0c9b3b..b53c8ca512 100644
--- a/Emby.Server.Implementations/Collections/CollectionManager.cs
+++ b/Emby.Server.Implementations/Collections/CollectionManager.cs
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Collections
         internal async Task<Folder?> EnsureLibraryFolder(string path, bool createIfNeeded)
         {
             var existingFolder = FindFolders(path).FirstOrDefault();
-            if (existingFolder != null)
+            if (existingFolder is not null)
             {
                 return existingFolder;
             }
@@ -121,7 +121,7 @@ namespace Emby.Server.Implementations.Collections
         {
             var folder = GetCollectionsFolder(false).GetAwaiter().GetResult();
 
-            return folder == null
+            return folder is null
                 ? Enumerable.Empty<BoxSet>()
                 : folder.GetChildren(user, true).OfType<BoxSet>();
         }
@@ -138,7 +138,7 @@ namespace Emby.Server.Implementations.Collections
 
             var parentFolder = await GetCollectionsFolder(true).ConfigureAwait(false);
 
-            if (parentFolder == null)
+            if (parentFolder is null)
             {
                 throw new ArgumentException(nameof(parentFolder));
             }
@@ -216,7 +216,7 @@ namespace Emby.Server.Implementations.Collections
             {
                 var item = _libraryManager.GetItemById(id);
 
-                if (item == null)
+                if (item is null)
                 {
                     throw new ArgumentException("No item exists with the supplied Id");
                 }
@@ -265,9 +265,9 @@ namespace Emby.Server.Implementations.Collections
             {
                 var childItem = _libraryManager.GetItemById(guidId);
 
-                var child = collection.LinkedChildren.FirstOrDefault(i => (i.ItemId.HasValue && i.ItemId.Value.Equals(guidId)) || (childItem != null && string.Equals(childItem.Path, i.Path, StringComparison.OrdinalIgnoreCase)));
+                var child = collection.LinkedChildren.FirstOrDefault(i => (i.ItemId.HasValue && i.ItemId.Value.Equals(guidId)) || (childItem is not null && string.Equals(childItem.Path, i.Path, StringComparison.OrdinalIgnoreCase)));
 
-                if (child == null)
+                if (child is null)
                 {
                     _logger.LogWarning("No collection title exists with the supplied Id");
                     continue;
@@ -275,7 +275,7 @@ namespace Emby.Server.Implementations.Collections
 
                 list.Add(child);
 
-                if (childItem != null)
+                if (childItem is not null)
                 {
                     itemList.Add(childItem);
                 }
diff --git a/Emby.Server.Implementations/Data/BaseSqliteRepository.cs b/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
index 450688491a..ff9aa4c2a3 100644
--- a/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
+++ b/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
@@ -101,7 +101,7 @@ namespace Emby.Server.Implementations.Data
         protected ManagedConnection GetConnection(bool readOnly = false)
         {
             WriteLock.Wait();
-            if (WriteConnection != null)
+            if (WriteConnection is not null)
             {
                 return new ManagedConnection(WriteConnection, WriteLock);
             }
diff --git a/Emby.Server.Implementations/Data/CleanDatabaseScheduledTask.cs b/Emby.Server.Implementations/Data/CleanDatabaseScheduledTask.cs
index 3de9d63719..4516b89dc2 100644
--- a/Emby.Server.Implementations/Data/CleanDatabaseScheduledTask.cs
+++ b/Emby.Server.Implementations/Data/CleanDatabaseScheduledTask.cs
@@ -44,7 +44,7 @@ namespace Emby.Server.Implementations.Data
 
                 var item = _libraryManager.GetItemById(itemId);
 
-                if (item != null)
+                if (item is not null)
                 {
                     _logger.LogInformation("Cleaning item {0} type: {1} path: {2}", item.Name, item.GetType().Name, item.Path ?? string.Empty);
 
diff --git a/Emby.Server.Implementations/Data/SqliteExtensions.cs b/Emby.Server.Implementations/Data/SqliteExtensions.cs
index 736b8125d7..4055b0ba17 100644
--- a/Emby.Server.Implementations/Data/SqliteExtensions.cs
+++ b/Emby.Server.Implementations/Data/SqliteExtensions.cs
@@ -253,7 +253,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (statement.BindParameters.TryGetValue(name, out IBindParameter bindParam))
             {
-                if (value == null)
+                if (value is null)
                 {
                     bindParam.BindNull();
                 }
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 9d44fd9d18..fa9d7dea24 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -691,7 +691,7 @@ namespace Emby.Server.Implementations.Data
 
         private string GetPathToSave(string path)
         {
-            if (path == null)
+            if (path is null)
             {
                 return null;
             }
@@ -890,7 +890,7 @@ namespace Emby.Server.Implementations.Data
 
             saveItemStatement.TryBind("@UnratedType", item.GetBlockUnratedType().ToString());
 
-            if (topParent == null)
+            if (topParent is null)
             {
                 saveItemStatement.TryBindNull("@TopParentId");
             }
@@ -1146,7 +1146,7 @@ namespace Emby.Server.Implementations.Data
             {
                 var image = ItemImageInfoFromValueString(part);
 
-                if (image != null)
+                if (image is not null)
                 {
                     result[position++] = image;
                 }
@@ -1414,7 +1414,7 @@ namespace Emby.Server.Implementations.Data
 
             var type = _typeMapper.GetType(typeString);
 
-            if (type == null)
+            if (type is null)
             {
                 return null;
             }
@@ -1433,7 +1433,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (item == null)
+            if (item is null)
             {
                 try
                 {
@@ -1444,7 +1444,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
@@ -1825,7 +1825,7 @@ namespace Emby.Server.Implementations.Data
             var hasSeries = item as IHasSeries;
             if (hasSeriesFields)
             {
-                if (hasSeries != null)
+                if (hasSeries is not null)
                 {
                     if (reader.TryGetGuid(index, out var seriesId))
                     {
@@ -1938,7 +1938,7 @@ namespace Emby.Server.Implementations.Data
 
             if (HasField(query, ItemFields.SeriesPresentationUniqueKey))
             {
-                if (hasSeries != null)
+                if (hasSeries is not null)
                 {
                     if (reader.TryGetString(index, out var seriesPresentationUniqueKey))
                     {
@@ -2151,7 +2151,7 @@ namespace Emby.Server.Implementations.Data
 
         private static bool EnableJoinUserData(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 return false;
             }
@@ -2205,7 +2205,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasProgramAttributes(InternalItemsQuery query)
         {
-            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
+            if (query.ParentType is not null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2220,7 +2220,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasServiceName(InternalItemsQuery query)
         {
-            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
+            if (query.ParentType is not null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2235,7 +2235,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasStartDate(InternalItemsQuery query)
         {
-            if (query.ParentType != null && _programExcludeParentTypes.Contains(query.ParentType.Value))
+            if (query.ParentType is not null && _programExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2270,7 +2270,7 @@ namespace Emby.Server.Implementations.Data
 
         private bool HasArtistFields(InternalItemsQuery query)
         {
-            if (query.ParentType != null && _artistExcludeParentTypes.Contains(query.ParentType.Value))
+            if (query.ParentType is not null && _artistExcludeParentTypes.Contains(query.ParentType.Value))
             {
                 return false;
             }
@@ -2392,7 +2392,7 @@ namespace Emby.Server.Implementations.Data
                 columns.Add("UserDatas.rating");
             }
 
-            if (query.SimilarTo != null)
+            if (query.SimilarTo is not null)
             {
                 var item = query.SimilarTo;
 
@@ -2497,7 +2497,7 @@ namespace Emby.Server.Implementations.Data
         {
             var item = query.SimilarTo;
 
-            if (item == null)
+            if (item is null)
             {
                 return;
             }
@@ -2681,7 +2681,7 @@ namespace Emby.Server.Implementations.Data
                     foreach (var row in statement.ExecuteQuery())
                     {
                         var item = GetItem(row, query, hasProgramAttributes, hasEpisodeAttributes, hasServiceName, hasStartDate, hasTrailerTypes, hasArtistFields, hasSeriesFields);
-                        if (item != null)
+                        if (item is not null)
                         {
                             items.Add(item);
                         }
@@ -2923,7 +2923,7 @@ namespace Emby.Server.Implementations.Data
                                 foreach (var row in statement.ExecuteQuery())
                                 {
                                     var item = GetItem(row, query, hasProgramAttributes, hasEpisodeAttributes, hasServiceName, hasStartDate, hasTrailerTypes, hasArtistFields, hasSeriesFields);
-                                    if (item != null)
+                                    if (item is not null)
                                     {
                                         list.Add(item);
                                     }
@@ -2966,7 +2966,7 @@ namespace Emby.Server.Implementations.Data
         private string GetOrderByText(InternalItemsQuery query)
         {
             var orderBy = query.OrderBy;
-            bool hasSimilar = query.SimilarTo != null;
+            bool hasSimilar = query.SimilarTo is not null;
             bool hasSearch = !string.IsNullOrEmpty(query.SearchTerm);
 
             if (hasSimilar || hasSearch)
@@ -3396,7 +3396,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (query.SimilarTo != null && query.MinSimilarityScore > 0)
+            if (query.SimilarTo is not null && query.MinSimilarityScore > 0)
             {
                 whereClauses.Add("SimilarityScore > " + (query.MinSimilarityScore - 1).ToString(CultureInfo.InvariantCulture));
             }
@@ -3683,7 +3683,7 @@ namespace Emby.Server.Implementations.Data
                         .Append(paramName)
                         .Append("))) OR ");
 
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         query.PersonIds[i].TryWriteBytes(idBytes);
                         statement.TryBind(paramName, idBytes);
@@ -3734,7 +3734,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrWhiteSpace(nameContains))
             {
                 whereClauses.Add("(CleanName like @NameContains or OriginalTitle like @NameContains)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     nameContains = FixUnicodeChars(nameContains);
 
@@ -3865,7 +3865,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@ArtistIds" + index;
 
                     clauses.Add("(guid in (select itemid from ItemValues where CleanValue = (select CleanName from TypedBaseItems where guid=" + paramName + ") and Type<=1))");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, artistId);
                     }
@@ -3886,7 +3886,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@ArtistIds" + index;
 
                     clauses.Add("(guid in (select itemid from ItemValues where CleanValue = (select CleanName from TypedBaseItems where guid=" + paramName + ") and Type=1))");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, artistId);
                     }
@@ -3907,7 +3907,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@ArtistIds" + index;
 
                     clauses.Add("((select CleanName from TypedBaseItems where guid=" + paramName + ") in (select CleanValue from ItemValues where ItemId=Guid and Type=0) AND (select CleanName from TypedBaseItems where guid=" + paramName + ") not in (select CleanValue from ItemValues where ItemId=Guid and Type=1))");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, artistId);
                     }
@@ -3928,7 +3928,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@AlbumIds" + index;
 
                     clauses.Add("Album in (select Name from typedbaseitems where guid=" + paramName + ")");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, albumId);
                     }
@@ -3949,7 +3949,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@ExcludeArtistId" + index;
 
                     clauses.Add("(guid not in (select itemid from ItemValues where CleanValue = (select CleanName from TypedBaseItems where guid=" + paramName + ") and Type<=1))");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, artistId);
                     }
@@ -3970,7 +3970,7 @@ namespace Emby.Server.Implementations.Data
                     var paramName = "@GenreId" + index;
 
                     clauses.Add("(guid in (select itemid from ItemValues where CleanValue = (select CleanName from TypedBaseItems where guid=" + paramName + ") and Type=2))");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, genreId);
                     }
@@ -3989,7 +3989,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var item in query.Genres)
                 {
                     clauses.Add("@Genre" + index + " in (select CleanValue from ItemValues where ItemId=Guid and Type=2)");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@Genre" + index, GetCleanValue(item));
                     }
@@ -4008,7 +4008,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var item in tags)
                 {
                     clauses.Add("@Tag" + index + " in (select CleanValue from ItemValues where ItemId=Guid and Type=4)");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@Tag" + index, GetCleanValue(item));
                     }
@@ -4027,7 +4027,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var item in excludeTags)
                 {
                     clauses.Add("@ExcludeTag" + index + " not in (select CleanValue from ItemValues where ItemId=Guid and Type=4)");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@ExcludeTag" + index, GetCleanValue(item));
                     }
@@ -4049,7 +4049,7 @@ namespace Emby.Server.Implementations.Data
 
                     clauses.Add("(guid in (select itemid from ItemValues where CleanValue = (select CleanName from TypedBaseItems where guid=" + paramName + ") and Type=3))");
 
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, studioId);
                     }
@@ -4068,7 +4068,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var item in query.OfficialRatings)
                 {
                     clauses.Add("OfficialRating=@OfficialRating" + index);
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@OfficialRating" + index, item);
                     }
@@ -4083,7 +4083,7 @@ namespace Emby.Server.Implementations.Data
             if (query.MinParentalRating.HasValue)
             {
                 whereClauses.Add("InheritedParentalRatingValue>=@MinParentalRating");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@MinParentalRating", query.MinParentalRating.Value);
                 }
@@ -4092,7 +4092,7 @@ namespace Emby.Server.Implementations.Data
             if (query.MaxParentalRating.HasValue)
             {
                 whereClauses.Add("InheritedParentalRatingValue<=@MaxParentalRating");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@MaxParentalRating", query.MaxParentalRating.Value);
                 }
@@ -4149,7 +4149,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrWhiteSpace(query.HasNoAudioTrackWithLanguage))
             {
                 whereClauses.Add("((select language from MediaStreams where MediaStreams.ItemId=A.Guid and MediaStreams.StreamType='Audio' and MediaStreams.Language=@HasNoAudioTrackWithLanguage limit 1) is null)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@HasNoAudioTrackWithLanguage", query.HasNoAudioTrackWithLanguage);
                 }
@@ -4158,7 +4158,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrWhiteSpace(query.HasNoInternalSubtitleTrackWithLanguage))
             {
                 whereClauses.Add("((select language from MediaStreams where MediaStreams.ItemId=A.Guid and MediaStreams.StreamType='Subtitle' and MediaStreams.IsExternal=0 and MediaStreams.Language=@HasNoInternalSubtitleTrackWithLanguage limit 1) is null)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@HasNoInternalSubtitleTrackWithLanguage", query.HasNoInternalSubtitleTrackWithLanguage);
                 }
@@ -4167,7 +4167,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrWhiteSpace(query.HasNoExternalSubtitleTrackWithLanguage))
             {
                 whereClauses.Add("((select language from MediaStreams where MediaStreams.ItemId=A.Guid and MediaStreams.StreamType='Subtitle' and MediaStreams.IsExternal=1 and MediaStreams.Language=@HasNoExternalSubtitleTrackWithLanguage limit 1) is null)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@HasNoExternalSubtitleTrackWithLanguage", query.HasNoExternalSubtitleTrackWithLanguage);
                 }
@@ -4176,7 +4176,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrWhiteSpace(query.HasNoSubtitleTrackWithLanguage))
             {
                 whereClauses.Add("((select language from MediaStreams where MediaStreams.ItemId=A.Guid and MediaStreams.StreamType='Subtitle' and MediaStreams.Language=@HasNoSubtitleTrackWithLanguage limit 1) is null)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@HasNoSubtitleTrackWithLanguage", query.HasNoSubtitleTrackWithLanguage);
                 }
@@ -4229,7 +4229,7 @@ namespace Emby.Server.Implementations.Data
             if (query.Years.Length == 1)
             {
                 whereClauses.Add("ProductionYear=@Years");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@Years", query.Years[0].ToString(CultureInfo.InvariantCulture));
                 }
@@ -4245,7 +4245,7 @@ namespace Emby.Server.Implementations.Data
             if (isVirtualItem.HasValue)
             {
                 whereClauses.Add("IsVirtualItem=@IsVirtualItem");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@IsVirtualItem", isVirtualItem.Value);
                 }
@@ -4279,7 +4279,7 @@ namespace Emby.Server.Implementations.Data
             if (queryMediaTypes.Length == 1)
             {
                 whereClauses.Add("MediaType=@MediaTypes");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@MediaTypes", queryMediaTypes[0]);
                 }
@@ -4299,7 +4299,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var id in query.ItemIds)
                 {
                     includeIds.Add("Guid = @IncludeId" + index);
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@IncludeId" + index, id);
                     }
@@ -4318,7 +4318,7 @@ namespace Emby.Server.Implementations.Data
                 foreach (var id in query.ExcludeItemIds)
                 {
                     excludeIds.Add("Guid <> @ExcludeId" + index);
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind("@ExcludeId" + index, id);
                     }
@@ -4329,7 +4329,7 @@ namespace Emby.Server.Implementations.Data
                 whereClauses.Add(string.Join(" AND ", excludeIds));
             }
 
-            if (query.ExcludeProviderIds != null && query.ExcludeProviderIds.Count > 0)
+            if (query.ExcludeProviderIds is not null && query.ExcludeProviderIds.Count > 0)
             {
                 var excludeIds = new List<string>();
 
@@ -4343,7 +4343,7 @@ namespace Emby.Server.Implementations.Data
 
                     var paramName = "@ExcludeProviderId" + index;
                     excludeIds.Add("(ProviderIds is null or ProviderIds not like " + paramName + ")");
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, "%" + pair.Key + "=" + pair.Value + "%");
                     }
@@ -4359,7 +4359,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (query.HasAnyProviderId != null && query.HasAnyProviderId.Count > 0)
+            if (query.HasAnyProviderId is not null && query.HasAnyProviderId.Count > 0)
             {
                 var hasProviderIds = new List<string>();
 
@@ -4386,7 +4386,7 @@ namespace Emby.Server.Implementations.Data
                     hasProviderIds.Add("ProviderIds like " + paramName);
 
                     // this replaces the placeholder with a value, here: %key=val%
-                    if (statement != null)
+                    if (statement is not null)
                     {
                         statement.TryBind(paramName, "%" + pair.Key + "=" + pair.Value + "%");
                     }
@@ -4468,7 +4468,7 @@ namespace Emby.Server.Implementations.Data
             {
                 whereClauses.Add("Guid in (select itemId from AncestorIds where AncestorId=@AncestorId)");
 
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@AncestorId", query.AncestorIds[0]);
                 }
@@ -4484,7 +4484,7 @@ namespace Emby.Server.Implementations.Data
             {
                 var inClause = "select guid from TypedBaseItems where PresentationUniqueKey=@AncestorWithPresentationUniqueKey";
                 whereClauses.Add(string.Format(CultureInfo.InvariantCulture, "Guid in (select itemId from AncestorIds where AncestorId in ({0}))", inClause));
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@AncestorWithPresentationUniqueKey", query.AncestorWithPresentationUniqueKey);
                 }
@@ -4494,7 +4494,7 @@ namespace Emby.Server.Implementations.Data
             {
                 whereClauses.Add("SeriesPresentationUniqueKey=@SeriesPresentationUniqueKey");
 
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@SeriesPresentationUniqueKey", query.SeriesPresentationUniqueKey);
                 }
@@ -4503,7 +4503,7 @@ namespace Emby.Server.Implementations.Data
             if (query.BlockUnratedItems.Length == 1)
             {
                 whereClauses.Add("(InheritedParentalRatingValue > 0 or UnratedType <> @UnratedType)");
-                if (statement != null)
+                if (statement is not null)
                 {
                     statement.TryBind("@UnratedType", query.BlockUnratedItems[0].ToString());
                 }
@@ -4522,7 +4522,7 @@ namespace Emby.Server.Implementations.Data
             if (query.ExcludeInheritedTags.Length > 0)
             {
                 var paramName = "@ExcludeInheritedTags";
-                if (statement == null)
+                if (statement is null)
                 {
                     int index = 0;
                     string excludedTags = string.Join(',', query.ExcludeInheritedTags.Select(_ => paramName + index++));
@@ -4732,7 +4732,7 @@ namespace Emby.Server.Implementations.Data
                 return false;
             }
 
-            if (query.User == null)
+            if (query.User is null)
             {
                 return false;
             }
@@ -4916,7 +4916,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             var whereClauses = new List<string>();
 
-            if (query.User != null && query.IsFavorite.HasValue)
+            if (query.User is not null && query.IsFavorite.HasValue)
             {
                 whereClauses.Add(@"p.Name IN (
 SELECT Name FROM TypedBaseItems WHERE UserDataKey IN (
@@ -5293,7 +5293,7 @@ AND Type = @InternalPersonType)");
                 .Append(" group by PresentationUniqueKey");
 
             if (query.OrderBy.Count != 0
-                || query.SimilarTo != null
+                || query.SimilarTo is not null
                 || !string.IsNullOrEmpty(query.SearchTerm))
             {
                 stringBuilder.Append(GetOrderByText(query));
@@ -5361,7 +5361,7 @@ AND Type = @InternalPersonType)");
                                     statement.TryBind("@UserId", query.User.InternalId);
                                 }
 
-                                if (typeSubQuery != null)
+                                if (typeSubQuery is not null)
                                 {
                                     GetWhereClauses(typeSubQuery, null);
                                 }
@@ -5382,7 +5382,7 @@ AND Type = @InternalPersonType)");
                                 foreach (var row in statement.ExecuteQuery())
                                 {
                                     var item = GetItem(row, query, hasProgramAttributes, hasEpisodeAttributes, hasServiceName, hasStartDate, hasTrailerTypes, hasArtistFields, hasSeriesFields);
-                                    if (item != null)
+                                    if (item is not null)
                                     {
                                         var countStartColumn = columns.Count - 1;
 
@@ -5402,7 +5402,7 @@ AND Type = @InternalPersonType)");
                                     statement.TryBind("@UserId", query.User.InternalId);
                                 }
 
-                                if (typeSubQuery != null)
+                                if (typeSubQuery is not null)
                                 {
                                     GetWhereClauses(typeSubQuery, null);
                                 }
diff --git a/Emby.Server.Implementations/Data/TypeMapper.cs b/Emby.Server.Implementations/Data/TypeMapper.cs
index 064664e1fe..4202915ec9 100644
--- a/Emby.Server.Implementations/Data/TypeMapper.cs
+++ b/Emby.Server.Implementations/Data/TypeMapper.cs
@@ -30,7 +30,7 @@ namespace Emby.Server.Implementations.Data
 
             return _typeMap.GetOrAdd(typeName, k => AppDomain.CurrentDomain.GetAssemblies()
                 .Select(a => a.GetType(k))
-                .FirstOrDefault(t => t != null));
+                .FirstOrDefault(t => t is not null));
         }
     }
 }
diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index f6d37421a8..0c6c31982e 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -213,7 +213,7 @@ namespace Emby.Server.Implementations.Dto
                 dto.DisplayPreferencesId = item.DisplayPreferencesId.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (user != null)
+            if (user is not null)
             {
                 AttachUserSpecificInfo(dto, item, user, options);
             }
@@ -235,14 +235,14 @@ namespace Emby.Server.Implementations.Dto
 
             if (options.ContainsField(ItemFields.CanDelete))
             {
-                dto.CanDelete = user == null
+                dto.CanDelete = user is null
                     ? item.CanDelete()
                     : item.CanDelete(user);
             }
 
             if (options.ContainsField(ItemFields.CanDownload))
             {
-                dto.CanDownload = user == null
+                dto.CanDownload = user is null
                     ? item.CanDownload()
                     : item.CanDownload(user);
             }
@@ -254,7 +254,7 @@ namespace Emby.Server.Implementations.Dto
 
             var liveTvManager = LivetvManager;
             var activeRecording = liveTvManager.GetActiveRecordingInfo(item.Path);
-            if (activeRecording != null)
+            if (activeRecording is not null)
             {
                 dto.Type = BaseItemKind.Recording;
                 dto.CanDownload = false;
@@ -317,7 +317,7 @@ namespace Emby.Server.Implementations.Dto
         {
             var dto = GetBaseItemDtoInternal(item, options, user);
 
-            if (taggedItems != null && options.ContainsField(ItemFields.ItemCounts))
+            if (taggedItems is not null && options.ContainsField(ItemFields.ItemCounts))
             {
                 SetItemByNameInfo(item, dto, taggedItems);
             }
@@ -417,7 +417,7 @@ namespace Emby.Server.Implementations.Dto
 
             if (options.ContainsField(ItemFields.BasicSyncInfo))
             {
-                var userCanSync = user != null && user.HasPermission(PermissionKind.EnableContentDownloading);
+                var userCanSync = user is not null && user.HasPermission(PermissionKind.EnableContentDownloading);
                 if (userCanSync && item.SupportsExternalTransfer)
                 {
                     dto.SupportsSync = true;
@@ -460,7 +460,7 @@ namespace Emby.Server.Implementations.Dto
 
             var album = item.AlbumEntity;
 
-            if (album != null)
+            if (album is not null)
             {
                 dto.Album = album.Name;
                 dto.AlbumId = album.Id;
@@ -491,7 +491,7 @@ namespace Emby.Server.Implementations.Dto
         {
             return images
                 .Select(p => GetImageCacheTag(item, p))
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .ToArray();
         }
 
@@ -570,8 +570,8 @@ namespace Emby.Server.Implementations.Dto
                         _logger.LogError(ex, "Error getting person {Name}", c);
                         return null;
                     }
-                }).Where(i => i != null)
-                .Where(i => user == null ?
+                }).Where(i => i is not null)
+                .Where(i => user is null ?
                     true :
                     i.IsVisible(user))
                 .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
@@ -593,13 +593,13 @@ namespace Emby.Server.Implementations.Dto
                 {
                     baseItemPerson.PrimaryImageTag = GetTagAndFillBlurhash(dto, entity, ImageType.Primary);
                     baseItemPerson.Id = entity.Id;
-                    if (dto.ImageBlurHashes != null)
+                    if (dto.ImageBlurHashes is not null)
                     {
                         // Only add BlurHash for the person's image.
                         baseItemPerson.ImageBlurHashes = new Dictionary<ImageType, Dictionary<string, string>>();
                         foreach (var (imageType, blurHash) in dto.ImageBlurHashes)
                         {
-                            if (blurHash != null)
+                            if (blurHash is not null)
                             {
                                 baseItemPerson.ImageBlurHashes[imageType] = new Dictionary<string, string>();
                                 foreach (var (imageId, blurHashValue) in blurHash)
@@ -662,7 +662,7 @@ namespace Emby.Server.Implementations.Dto
         private string GetTagAndFillBlurhash(BaseItemDto dto, BaseItem item, ImageType imageType, int imageIndex = 0)
         {
             var image = item.GetImageInfo(imageType, imageIndex);
-            if (image != null)
+            if (image is not null)
             {
                 return GetTagAndFillBlurhash(dto, item, image);
             }
@@ -782,7 +782,7 @@ namespace Emby.Server.Implementations.Dto
                     {
                         var tag = GetTagAndFillBlurhash(dto, item, image);
 
-                        if (tag != null)
+                        if (tag is not null)
                         {
                             dto.ImageTags[image.Type] = tag;
                         }
@@ -917,7 +917,7 @@ namespace Emby.Server.Implementations.Dto
 
                 var albumParent = audio.AlbumEntity;
 
-                if (albumParent != null)
+                if (albumParent is not null)
                 {
                     dto.AlbumId = albumParent.Id;
                     dto.AlbumPrimaryImageTag = GetTagAndFillBlurhash(dto, albumParent, ImageType.Primary);
@@ -967,7 +967,7 @@ namespace Emby.Server.Implementations.Dto
                         {
                             EnableImages = false
                         });
-                        if (artist != null)
+                        if (artist is not null)
                         {
                             return new NameGuidPair
                             {
@@ -977,7 +977,7 @@ namespace Emby.Server.Implementations.Dto
                         }
 
                         return null;
-                    }).Where(i => i != null).ToArray();
+                    }).Where(i => i is not null).ToArray();
             }
 
             if (item is IHasAlbumArtist hasAlbumArtist)
@@ -1016,7 +1016,7 @@ namespace Emby.Server.Implementations.Dto
                         {
                             EnableImages = false
                         });
-                        if (artist != null)
+                        if (artist is not null)
                         {
                             return new NameGuidPair
                             {
@@ -1026,7 +1026,7 @@ namespace Emby.Server.Implementations.Dto
                         }
 
                         return null;
-                    }).Where(i => i != null).ToArray();
+                    }).Where(i => i is not null).ToArray();
             }
 
             // Add video info
@@ -1073,7 +1073,7 @@ namespace Emby.Server.Implementations.Dto
                 {
                     MediaStream[] mediaStreams;
 
-                    if (dto.MediaSources != null && dto.MediaSources.Length > 0)
+                    if (dto.MediaSources is not null && dto.MediaSources.Length > 0)
                     {
                         if (item.SourceType == SourceType.Channel)
                         {
@@ -1140,10 +1140,10 @@ namespace Emby.Server.Implementations.Dto
                 // if (options.ContainsField(ItemFields.SeriesPrimaryImage))
                 {
                     episodeSeries ??= episode.Series;
-                    if (episodeSeries != null)
+                    if (episodeSeries is not null)
                     {
                         dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, episodeSeries, ImageType.Primary);
-                        if (dto.ImageTags == null || !dto.ImageTags.ContainsKey(ImageType.Primary))
+                        if (dto.ImageTags is null || !dto.ImageTags.ContainsKey(ImageType.Primary))
                         {
                             AttachPrimaryImageAspectRatio(dto, episodeSeries);
                         }
@@ -1153,7 +1153,7 @@ namespace Emby.Server.Implementations.Dto
                 if (options.ContainsField(ItemFields.SeriesStudio))
                 {
                     episodeSeries ??= episode.Series;
-                    if (episodeSeries != null)
+                    if (episodeSeries is not null)
                     {
                         dto.SeriesStudio = episodeSeries.Studios.FirstOrDefault();
                     }
@@ -1179,7 +1179,7 @@ namespace Emby.Server.Implementations.Dto
                 if (options.ContainsField(ItemFields.SeriesStudio))
                 {
                     series ??= season.Series;
-                    if (series != null)
+                    if (series is not null)
                     {
                         dto.SeriesStudio = series.Studios.FirstOrDefault();
                     }
@@ -1190,10 +1190,10 @@ namespace Emby.Server.Implementations.Dto
                 // if (options.ContainsField(ItemFields.SeriesPrimaryImage))
                 {
                     series ??= season.Series;
-                    if (series != null)
+                    if (series is not null)
                     {
                         dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, series, ImageType.Primary);
-                        if (dto.ImageTags == null || !dto.ImageTags.ContainsKey(ImageType.Primary))
+                        if (dto.ImageTags is null || !dto.ImageTags.ContainsKey(ImageType.Primary))
                         {
                             AttachPrimaryImageAspectRatio(dto, series);
                         }
@@ -1256,7 +1256,7 @@ namespace Emby.Server.Implementations.Dto
             if (item.SourceType == SourceType.Channel)
             {
                 var channel = _libraryManager.GetItemById(item.ChannelId);
-                if (channel != null)
+                if (channel is not null)
                 {
                     dto.ChannelName = channel.Name;
                 }
@@ -1268,7 +1268,7 @@ namespace Emby.Server.Implementations.Dto
             if (currentItem is MusicAlbum musicAlbum)
             {
                 var artist = musicAlbum.GetMusicArtist(new DtoOptions(false));
-                if (artist != null)
+                if (artist is not null)
                 {
                     return artist;
                 }
@@ -1276,7 +1276,7 @@ namespace Emby.Server.Implementations.Dto
 
             var parent = currentItem.DisplayParent ?? currentItem.GetOwner() ?? currentItem.GetParent();
 
-            if (parent == null && originalItem is not UserRootFolder && originalItem is not UserView && originalItem is not AggregateFolder && originalItem is not ICollectionFolder && originalItem is not Channel)
+            if (parent is null && originalItem is not UserRootFolder && originalItem is not UserView && originalItem is not AggregateFolder && originalItem is not ICollectionFolder && originalItem is not Channel)
             {
                 parent = _libraryManager.GetCollectionFolders(originalItem).FirstOrDefault();
             }
@@ -1309,53 +1309,53 @@ namespace Emby.Server.Implementations.Dto
 
             var imageTags = dto.ImageTags;
 
-            while ((!(imageTags != null && imageTags.ContainsKey(ImageType.Logo)) && logoLimit > 0)
-                || (!(imageTags != null && imageTags.ContainsKey(ImageType.Art)) && artLimit > 0)
-                || (!(imageTags != null && imageTags.ContainsKey(ImageType.Thumb)) && thumbLimit > 0)
+            while ((!(imageTags is not null && imageTags.ContainsKey(ImageType.Logo)) && logoLimit > 0)
+                || (!(imageTags is not null && imageTags.ContainsKey(ImageType.Art)) && artLimit > 0)
+                || (!(imageTags is not null && imageTags.ContainsKey(ImageType.Thumb)) && thumbLimit > 0)
                 || parent is Series)
             {
                 parent ??= isFirst ? GetImageDisplayParent(item, item) ?? owner : parent;
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
 
                 var allImages = parent.ImageInfos;
 
-                if (logoLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Logo)) && dto.ParentLogoItemId is null)
+                if (logoLimit > 0 && !(imageTags is not null && imageTags.ContainsKey(ImageType.Logo)) && dto.ParentLogoItemId is null)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Logo);
 
-                    if (image != null)
+                    if (image is not null)
                     {
                         dto.ParentLogoItemId = parent.Id;
                         dto.ParentLogoImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
 
-                if (artLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Art)) && dto.ParentArtItemId is null)
+                if (artLimit > 0 && !(imageTags is not null && imageTags.ContainsKey(ImageType.Art)) && dto.ParentArtItemId is null)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Art);
 
-                    if (image != null)
+                    if (image is not null)
                     {
                         dto.ParentArtItemId = parent.Id;
                         dto.ParentArtImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
 
-                if (thumbLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Thumb)) && (dto.ParentThumbItemId is null || parent is Series) && parent is not ICollectionFolder && parent is not UserView)
+                if (thumbLimit > 0 && !(imageTags is not null && imageTags.ContainsKey(ImageType.Thumb)) && (dto.ParentThumbItemId is null || parent is Series) && parent is not ICollectionFolder && parent is not UserView)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Thumb);
 
-                    if (image != null)
+                    if (image is not null)
                     {
                         dto.ParentThumbItemId = parent.Id;
                         dto.ParentThumbImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
 
-                if (backdropLimit > 0 && !((dto.BackdropImageTags != null && dto.BackdropImageTags.Length > 0) || (dto.ParentBackdropImageTags != null && dto.ParentBackdropImageTags.Length > 0)))
+                if (backdropLimit > 0 && !((dto.BackdropImageTags is not null && dto.BackdropImageTags.Length > 0) || (dto.ParentBackdropImageTags is not null && dto.ParentBackdropImageTags.Length > 0)))
                 {
                     var images = allImages.Where(i => i.Type == ImageType.Backdrop).Take(backdropLimit).ToList();
 
@@ -1403,7 +1403,7 @@ namespace Emby.Server.Implementations.Dto
         {
             var imageInfo = item.GetImageInfo(ImageType.Primary, 0);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return null;
             }
diff --git a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
index d5e4a636ef..25a7029c90 100644
--- a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
@@ -191,7 +191,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(
                         LibraryUpdateTimerCallback,
@@ -227,7 +227,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration, Timeout.Infinite);
                 }
@@ -254,7 +254,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration, Timeout.Infinite);
                 }
@@ -299,7 +299,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
                 SendChangeNotifications(_itemsAdded.ToList(), itemsUpdated, _itemsRemoved.ToList(), foldersAddedTo, foldersRemovedFrom, CancellationToken.None).GetAwaiter().GetResult();
 
-                if (LibraryUpdateTimer != null)
+                if (LibraryUpdateTimer is not null)
                 {
                     LibraryUpdateTimer.Dispose();
                     LibraryUpdateTimer = null;
@@ -475,7 +475,7 @@ namespace Emby.Server.Implementations.EntryPoints
         {
             if (dispose)
             {
-                if (LibraryUpdateTimer != null)
+                if (LibraryUpdateTimer is not null)
                 {
                     LibraryUpdateTimer.Dispose();
                     LibraryUpdateTimer = null;
diff --git a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
index 82c8d3ab6d..42c8f24a14 100644
--- a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
@@ -51,7 +51,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_syncLock)
             {
-                if (_updateTimer == null)
+                if (_updateTimer is null)
                 {
                     _updateTimer = new Timer(
                         UpdateTimerCallback,
@@ -75,11 +75,11 @@ namespace Emby.Server.Implementations.EntryPoints
                 var baseItem = e.Item;
 
                 // Go up one level for indicators
-                if (baseItem != null)
+                if (baseItem is not null)
                 {
                     var parent = baseItem.GetOwner() ?? baseItem.GetParent();
 
-                    if (parent != null)
+                    if (parent is not null)
                     {
                         keys.Add(parent);
                     }
@@ -97,7 +97,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
                 SendNotifications(changes, CancellationToken.None).GetAwaiter().GetResult();
 
-                if (_updateTimer != null)
+                if (_updateTimer is not null)
                 {
                     _updateTimer.Dispose();
                     _updateTimer = null;
@@ -145,7 +145,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
         public void Dispose()
         {
-            if (_updateTimer != null)
+            if (_updateTimer is not null)
             {
                 _updateTimer.Dispose();
                 _updateTimer = null;
diff --git a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
index d095248fab..b1a99853ad 100644
--- a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
+++ b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
@@ -164,7 +164,7 @@ namespace Emby.Server.Implementations.HttpServer
             ReadResult result = await reader.ReadAsync().ConfigureAwait(false);
             ReadOnlySequence<byte> buffer = result.Buffer;
 
-            if (OnReceive == null)
+            if (OnReceive is null)
             {
                 // Tell the PipeReader how much of the buffer we have consumed
                 reader.AdvanceTo(buffer.End);
@@ -185,7 +185,7 @@ namespace Emby.Server.Implementations.HttpServer
                 return;
             }
 
-            if (stub == null)
+            if (stub is null)
             {
                 _logger.LogError("Error processing web socket message");
                 return;
diff --git a/Emby.Server.Implementations/IO/FileRefresher.cs b/Emby.Server.Implementations/IO/FileRefresher.cs
index 6326208f71..534ca7b6c3 100644
--- a/Emby.Server.Implementations/IO/FileRefresher.cs
+++ b/Emby.Server.Implementations/IO/FileRefresher.cs
@@ -80,7 +80,7 @@ namespace Emby.Server.Implementations.IO
                     return;
                 }
 
-                if (_timer == null)
+                if (_timer is null)
                 {
                     _timer = new Timer(OnTimerCallback, null, TimeSpan.FromSeconds(_configurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
                 }
@@ -138,7 +138,7 @@ namespace Emby.Server.Implementations.IO
             IEnumerable<BaseItem> itemsToRefresh = paths
                 .Distinct(StringComparer.OrdinalIgnoreCase)
                 .Select(GetAffectedBaseItem)
-                .Where(item => item != null)
+                .Where(item => item is not null)
                 .GroupBy(x => x!.Id) // Removed null values in the previous .Where()
                 .Select(x => x.First())!;
 
@@ -178,21 +178,21 @@ namespace Emby.Server.Implementations.IO
         {
             BaseItem? item = null;
 
-            while (item == null && !string.IsNullOrEmpty(path))
+            while (item is null && !string.IsNullOrEmpty(path))
             {
                 item = _libraryManager.FindByPath(path, null);
 
                 path = System.IO.Path.GetDirectoryName(path) ?? string.Empty;
             }
 
-            if (item != null)
+            if (item is not null)
             {
                 // If the item has been deleted find the first valid parent that still exists
                 while (!Directory.Exists(item.Path) && !File.Exists(item.Path))
                 {
                     item = item.GetOwner() ?? item.GetParent();
 
-                    if (item == null)
+                    if (item is null)
                     {
                         break;
                     }
@@ -206,7 +206,7 @@ namespace Emby.Server.Implementations.IO
         {
             lock (_timerLock)
             {
-                if (_timer != null)
+                if (_timer is not null)
                 {
                     _timer.Dispose();
                     _timer = null;
diff --git a/Emby.Server.Implementations/IO/LibraryMonitor.cs b/Emby.Server.Implementations/IO/LibraryMonitor.cs
index c1422c43da..e883467715 100644
--- a/Emby.Server.Implementations/IO/LibraryMonitor.cs
+++ b/Emby.Server.Implementations/IO/LibraryMonitor.cs
@@ -115,7 +115,7 @@ namespace Emby.Server.Implementations.IO
 
             var options = _libraryManager.GetLibraryOptions(item);
 
-            if (options != null)
+            if (options is not null)
             {
                 return options.EnableRealtimeMonitor;
             }
diff --git a/Emby.Server.Implementations/IO/ManagedFileSystem.cs b/Emby.Server.Implementations/IO/ManagedFileSystem.cs
index 120b1812a7..cdb301094d 100644
--- a/Emby.Server.Implementations/IO/ManagedFileSystem.cs
+++ b/Emby.Server.Implementations/IO/ManagedFileSystem.cs
@@ -149,7 +149,7 @@ namespace Emby.Server.Implementations.IO
             var extension = Path.GetExtension(shortcutPath);
             var handler = _shortcutHandlers.Find(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
 
-            if (handler != null)
+            if (handler is not null)
             {
                 handler.Create(shortcutPath, target);
             }
@@ -621,14 +621,14 @@ namespace Emby.Server.Implementations.IO
 
             // On linux and osx the search pattern is case sensitive
             // If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
-            if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions != null && extensions.Count == 1)
+            if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions is not null && extensions.Count == 1)
             {
                 return ToMetadata(new DirectoryInfo(path).EnumerateFiles("*" + extensions[0], enumerationOptions));
             }
 
             var files = new DirectoryInfo(path).EnumerateFiles("*", enumerationOptions);
 
-            if (extensions != null && extensions.Count > 0)
+            if (extensions is not null && extensions.Count > 0)
             {
                 files = files.Where(i =>
                 {
@@ -678,14 +678,14 @@ namespace Emby.Server.Implementations.IO
 
             // On linux and osx the search pattern is case sensitive
             // If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
-            if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions != null && extensions.Length == 1)
+            if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions is not null && extensions.Length == 1)
             {
                 return Directory.EnumerateFiles(path, "*" + extensions[0], enumerationOptions);
             }
 
             var files = Directory.EnumerateFiles(path, "*", enumerationOptions);
 
-            if (extensions != null && extensions.Length > 0)
+            if (extensions is not null && extensions.Length > 0)
             {
                 files = files.Where(i =>
                 {
diff --git a/Emby.Server.Implementations/IO/StreamHelper.cs b/Emby.Server.Implementations/IO/StreamHelper.cs
index f55c16d6d7..6eaf22ce48 100644
--- a/Emby.Server.Implementations/IO/StreamHelper.cs
+++ b/Emby.Server.Implementations/IO/StreamHelper.cs
@@ -23,7 +23,7 @@ namespace Emby.Server.Implementations.IO
 
                     await destination.WriteAsync(buffer.AsMemory(0, read), cancellationToken).ConfigureAwait(false);
 
-                    if (onStarted != null)
+                    if (onStarted is not null)
                     {
                         onStarted();
                         onStarted = null;
diff --git a/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs b/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
index 57c2f1a5e5..0a3d740ccf 100644
--- a/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
+++ b/Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Images
         {
             var image = item.GetImageInfo(imageType, 0);
 
-            if (image != null)
+            if (image is not null)
             {
                 if (!image.IsLocalFile)
                 {
@@ -143,20 +143,20 @@ namespace Emby.Server.Implementations.Images
                     if (useBackdrop)
                     {
                         var backdrop = i.GetImageInfo(ImageType.Backdrop, 0);
-                        if (backdrop != null && backdrop.IsLocalFile)
+                        if (backdrop is not null && backdrop.IsLocalFile)
                         {
                             return backdrop.Path;
                         }
                     }
 
                     var image = i.GetImageInfo(ImageType.Primary, 0);
-                    if (image != null && image.IsLocalFile)
+                    if (image is not null && image.IsLocalFile)
                     {
                         return image.Path;
                     }
 
                     image = i.GetImageInfo(ImageType.Thumb, 0);
-                    if (image != null && image.IsLocalFile)
+                    if (image is not null && image.IsLocalFile)
                     {
                         return image.Path;
                     }
@@ -268,7 +268,7 @@ namespace Emby.Server.Implementations.Images
         {
             var image = item.GetImageInfo(type, 0);
 
-            if (image != null)
+            if (image is not null)
             {
                 if (!image.IsLocalFile)
                 {
diff --git a/Emby.Server.Implementations/Images/DynamicImageProvider.cs b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
index 0faa0f8faf..82690f8a95 100644
--- a/Emby.Server.Implementations/Images/DynamicImageProvider.cs
+++ b/Emby.Server.Implementations/Images/DynamicImageProvider.cs
@@ -52,7 +52,7 @@ namespace Emby.Server.Implementations.Images
                 if (i is Episode episode)
                 {
                     var series = episode.Series;
-                    if (series != null)
+                    if (series is not null)
                     {
                         return series;
                     }
@@ -63,7 +63,7 @@ namespace Emby.Server.Implementations.Images
                 if (i is Season season)
                 {
                     var series = season.Series;
-                    if (series != null)
+                    if (series is not null)
                     {
                         return series;
                     }
@@ -74,7 +74,7 @@ namespace Emby.Server.Implementations.Images
                 if (i is Audio audio)
                 {
                     var album = audio.AlbumEntity;
-                    if (album != null && album.HasImage(ImageType.Primary))
+                    if (album is not null && album.HasImage(ImageType.Primary))
                     {
                         return album;
                     }
diff --git a/Emby.Server.Implementations/Images/PlaylistImageProvider.cs b/Emby.Server.Implementations/Images/PlaylistImageProvider.cs
index b8f0f0d65c..5801512873 100644
--- a/Emby.Server.Implementations/Images/PlaylistImageProvider.cs
+++ b/Emby.Server.Implementations/Images/PlaylistImageProvider.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Images
                     if (subItem is Episode episode)
                     {
                         var series = episode.Series;
-                        if (series != null && series.HasImage(ImageType.Primary))
+                        if (series is not null && series.HasImage(ImageType.Primary))
                         {
                             return series;
                         }
@@ -47,7 +47,7 @@ namespace Emby.Server.Implementations.Images
 
                     var parent = subItem.GetOwner() ?? subItem.GetParent();
 
-                    if (parent != null && parent.HasImage(ImageType.Primary))
+                    if (parent is not null && parent.HasImage(ImageType.Primary))
                     {
                         if (parent is MusicAlbum)
                         {
@@ -57,7 +57,7 @@ namespace Emby.Server.Implementations.Images
 
                     return null;
                 })
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .GroupBy(x => x.Id)
                 .Select(x => x.First())
                 .ToList();
diff --git a/Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs b/Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs
index e558fbe27b..665d70a418 100644
--- a/Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs
+++ b/Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs
@@ -52,7 +52,7 @@ namespace Emby.Server.Implementations.Library
 
             if (fileInfo.IsDirectory)
             {
-                if (parent != null)
+                if (parent is not null)
                 {
                     // Ignore extras folders but allow it at the collection level
                     if (_namingOptions.AllExtrasTypesFolderNames.ContainsKey(filename)
@@ -65,7 +65,7 @@ namespace Emby.Server.Implementations.Library
             }
             else
             {
-                if (parent != null)
+                if (parent is not null)
                 {
                     // Don't resolve these into audio files
                     if (Path.GetFileNameWithoutExtension(filename.AsSpan()).Equals(BaseItem.ThemeSongFileName, StringComparison.Ordinal)
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index b688af5286..9ee8a630d2 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -176,7 +176,7 @@ namespace Emby.Server.Implementations.Library
         {
             get
             {
-                if (_rootFolder == null)
+                if (_rootFolder is null)
                 {
                     lock (_rootFolderSyncLock)
                     {
@@ -465,9 +465,9 @@ namespace Emby.Server.Implementations.Library
         private BaseItem ResolveItem(ItemResolveArgs args, IItemResolver[] resolvers)
         {
             var item = (resolvers ?? EntityResolvers).Select(r => Resolve(args, r))
-                .FirstOrDefault(i => i != null);
+                .FirstOrDefault(i => i is not null);
 
-            if (item != null)
+            if (item is not null)
             {
                 ResolverHelper.SetInitialItemValues(item, args, _fileSystem, this);
             }
@@ -536,7 +536,7 @@ namespace Emby.Server.Implementations.Library
 
             var fullPath = fileInfo.FullName;
 
-            if (string.IsNullOrEmpty(collectionType) && parent != null)
+            if (string.IsNullOrEmpty(collectionType) && parent is not null)
             {
                 collectionType = GetContentTypeOverride(fullPath, true);
             }
@@ -572,7 +572,7 @@ namespace Emby.Server.Implementations.Library
                 }
                 catch (Exception ex)
                 {
-                    if (parent != null && parent.IsPhysicalRoot)
+                    if (parent is not null && parent.IsPhysicalRoot)
                     {
                         _logger.LogError(ex, "Error in GetFilteredFileSystemEntries isPhysicalRoot: {0} IsVf: {1}", isPhysicalRoot, isVf);
 
@@ -654,9 +654,9 @@ namespace Emby.Server.Implementations.Library
         {
             var fileList = files.Where(i => !IgnoreFile(i, parent)).ToList();
 
-            if (parent != null)
+            if (parent is not null)
             {
-                var multiItemResolvers = resolvers == null ? MultiItemResolvers : resolvers.OfType<IMultiItemResolver>().ToArray();
+                var multiItemResolvers = resolvers is null ? MultiItemResolvers : resolvers.OfType<IMultiItemResolver>().ToArray();
 
                 foreach (var resolver in multiItemResolvers)
                 {
@@ -697,7 +697,7 @@ namespace Emby.Server.Implementations.Library
                     _logger.LogError(ex, "Error resolving path {Path}", file.FullName);
                 }
 
-                if (result != null)
+                if (result is not null)
                 {
                     yield return result;
                 }
@@ -750,7 +750,7 @@ namespace Emby.Server.Implementations.Library
 
             var dbItem = GetItemById(folder.Id) as BasePluginFolder;
 
-            if (dbItem != null && string.Equals(dbItem.Path, folder.Path, StringComparison.OrdinalIgnoreCase))
+            if (dbItem is not null && string.Equals(dbItem.Path, folder.Path, StringComparison.OrdinalIgnoreCase))
             {
                 folder = dbItem;
             }
@@ -770,11 +770,11 @@ namespace Emby.Server.Implementations.Library
 
         public Folder GetUserRootFolder()
         {
-            if (_userRootFolder == null)
+            if (_userRootFolder is null)
             {
                 lock (_userRootFolderSyncLock)
                 {
-                    if (_userRootFolder == null)
+                    if (_userRootFolder is null)
                     {
                         var userRootPath = _configurationManager.ApplicationPaths.DefaultUserViewsPath;
 
@@ -792,7 +792,7 @@ namespace Emby.Server.Implementations.Library
                             _logger.LogError(ex, "Error creating UserRootFolder {Path}", newItemId);
                         }
 
-                        if (tmpItem == null)
+                        if (tmpItem is null)
                         {
                             _logger.LogDebug("Creating new userRootFolder with DeepCopy");
                             tmpItem = ((Folder)ResolvePath(_fileSystem.GetDirectoryInfo(userRootPath))).DeepCopy<Folder, UserRootFolder>();
@@ -952,7 +952,7 @@ namespace Emby.Server.Implementations.Library
                 .Cast<T>()
                 .FirstOrDefault();
 
-                if (existing != null)
+                if (existing is not null)
                 {
                     return existing;
                 }
@@ -961,7 +961,7 @@ namespace Emby.Server.Implementations.Library
             var path = getPathFn(name);
             var id = GetItemByNameId<T>(path);
             var item = GetItemById(id) as T;
-            if (item == null)
+            if (item is null)
             {
                 item = new T
                 {
@@ -1181,7 +1181,7 @@ namespace Emby.Server.Implementations.Library
                             return null;
                         }
                     })
-                    .Where(i => i != null)
+                    .Where(i => i is not null)
                     .OrderBy(i => i)
                     .ToArray(),
 
@@ -1190,17 +1190,17 @@ namespace Emby.Server.Implementations.Library
 
             var libraryFolder = allCollectionFolders.FirstOrDefault(i => string.Equals(i.Path, dir, StringComparison.OrdinalIgnoreCase));
 
-            if (libraryFolder != null && libraryFolder.HasImage(ImageType.Primary))
+            if (libraryFolder is not null && libraryFolder.HasImage(ImageType.Primary))
             {
                 info.PrimaryImageItemId = libraryFolder.Id.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (libraryFolder != null)
+            if (libraryFolder is not null)
             {
                 info.ItemId = libraryFolder.Id.ToString("N", CultureInfo.InvariantCulture);
                 info.LibraryOptions = GetLibraryOptions(libraryFolder);
 
-                if (refreshQueue != null)
+                if (refreshQueue is not null)
                 {
                     info.RefreshProgress = libraryFolder.GetRefreshProgress();
 
@@ -1245,7 +1245,7 @@ namespace Emby.Server.Implementations.Library
 
             item = RetrieveItem(id);
 
-            if (item != null)
+            if (item is not null)
             {
                 RegisterItem(item);
             }
@@ -1258,13 +1258,13 @@ namespace Emby.Server.Implementations.Library
             if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
-                if (parent != null)
+                if (parent is not null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
                 }
             }
 
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User, allowExternalContent);
             }
@@ -1282,13 +1282,13 @@ namespace Emby.Server.Implementations.Library
             if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
-                if (parent != null)
+                if (parent is not null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
                 }
             }
 
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1302,7 +1302,7 @@ namespace Emby.Server.Implementations.Library
 
             if (query.AncestorIds.Length == 0 && query.TopParentIds.Length == 0)
             {
-                if (query.User != null)
+                if (query.User is not null)
                 {
                     AddUserToQuery(query, query.User);
                 }
@@ -1313,7 +1313,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<BaseItem> QueryItems(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1331,7 +1331,7 @@ namespace Emby.Server.Implementations.Library
 
         public List<Guid> GetItemIds(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1341,7 +1341,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetStudios(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1352,7 +1352,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetGenres(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1363,7 +1363,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetMusicGenres(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1374,7 +1374,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetAllArtists(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1385,7 +1385,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetArtists(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1426,7 +1426,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetAlbumArtists(InternalItemsQuery query)
         {
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1440,13 +1440,13 @@ namespace Emby.Server.Implementations.Library
             if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
-                if (parent != null)
+                if (parent is not null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
                 }
             }
 
-            if (query.User != null)
+            if (query.User is not null)
             {
                 AddUserToQuery(query, query.User);
             }
@@ -1524,7 +1524,7 @@ namespace Emby.Server.Implementations.Library
                 if (!view.DisplayParentId.Equals(default))
                 {
                     var displayParent = GetItemById(view.DisplayParentId);
-                    if (displayParent != null)
+                    if (displayParent is not null)
                     {
                         return GetTopParentIdsForQuery(displayParent, user);
                     }
@@ -1535,7 +1535,7 @@ namespace Emby.Server.Implementations.Library
                 if (!view.ParentId.Equals(default))
                 {
                     var displayParent = GetItemById(view.ParentId);
-                    if (displayParent != null)
+                    if (displayParent is not null)
                     {
                         return GetTopParentIdsForQuery(displayParent, user);
                     }
@@ -1544,7 +1544,7 @@ namespace Emby.Server.Implementations.Library
                 }
 
                 // Handle grouping
-                if (user != null && !string.IsNullOrEmpty(view.ViewType) && UserView.IsEligibleForGrouping(view.ViewType)
+                if (user is not null && !string.IsNullOrEmpty(view.ViewType) && UserView.IsEligibleForGrouping(view.ViewType)
                     && user.GetPreference(PreferenceKind.GroupedFolders).Length > 0)
                 {
                     return GetUserRootFolder()
@@ -1564,7 +1564,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             var topParent = item.GetTopParent();
-            if (topParent != null)
+            if (topParent is not null)
             {
                 return new[] { topParent.Id };
             }
@@ -1589,7 +1589,7 @@ namespace Emby.Server.Implementations.Library
             return items
                 .SelectMany(i => i.ToArray())
                 .Select(ResolveIntro)
-                .Where(i => i != null);
+                .Where(i => i is not null);
         }
 
         /// <summary>
@@ -1627,7 +1627,7 @@ namespace Emby.Server.Implementations.Library
                 // Get an existing item by Id
                 video = GetItemById(info.ItemId.Value) as Video;
 
-                if (video == null)
+                if (video is null)
                 {
                     _logger.LogError("Unable to locate item with Id {ID}.", info.ItemId.Value);
                 }
@@ -1639,7 +1639,7 @@ namespace Emby.Server.Implementations.Library
                     // Try to resolve the path into a video
                     video = ResolvePath(_fileSystem.GetFileSystemInfo(info.Path)) as Video;
 
-                    if (video == null)
+                    if (video is null)
                     {
                         _logger.LogError("Intro resolver returned null for {Path}.", info.Path);
                     }
@@ -1648,7 +1648,7 @@ namespace Emby.Server.Implementations.Library
                         // Pull the saved db item that will include metadata
                         var dbItem = GetItemById(video.Id) as Video;
 
-                        if (dbItem != null)
+                        if (dbItem is not null)
                         {
                             video = dbItem;
                         }
@@ -1685,7 +1685,7 @@ namespace Emby.Server.Implementations.Library
 
             IOrderedEnumerable<BaseItem> orderedItems = null;
 
-            foreach (var orderBy in sortBy.Select(o => GetComparer(o, user)).Where(c => c != null))
+            foreach (var orderBy in sortBy.Select(o => GetComparer(o, user)).Where(c => c is not null))
             {
                 if (isFirst)
                 {
@@ -1711,7 +1711,7 @@ namespace Emby.Server.Implementations.Library
             foreach (var (name, sortOrder) in orderBy)
             {
                 var comparer = GetComparer(name, user);
-                if (comparer == null)
+                if (comparer is null)
                 {
                     continue;
                 }
@@ -1781,7 +1781,7 @@ namespace Emby.Server.Implementations.Library
                 RegisterItem(item);
             }
 
-            if (ItemAdded != null)
+            if (ItemAdded is not null)
             {
                 foreach (var item in items)
                 {
@@ -1811,7 +1811,7 @@ namespace Emby.Server.Implementations.Library
 
         private bool ImageNeedsRefresh(ItemImageInfo image)
         {
-            if (image.Path != null && image.IsLocalFile)
+            if (image.Path is not null && image.IsLocalFile)
             {
                 if (image.Width == 0 || image.Height == 0 || string.IsNullOrEmpty(image.BlurHash))
                 {
@@ -1829,7 +1829,7 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            return image.Path != null && !image.IsLocalFile;
+            return image.Path is not null && !image.IsLocalFile;
         }
 
         /// <inheritdoc />
@@ -1838,7 +1838,7 @@ namespace Emby.Server.Implementations.Library
             ArgumentNullException.ThrowIfNull(item);
 
             var outdated = forceUpdate
-                ? item.ImageInfos.Where(i => i.Path != null).ToArray()
+                ? item.ImageInfos.Where(i => i.Path is not null).ToArray()
                 : item.ImageInfos.Where(ImageNeedsRefresh).ToArray();
             // Skip image processing if current or live tv source
             if (outdated.Length == 0 || item.SourceType != SourceType.Library)
@@ -1923,7 +1923,7 @@ namespace Emby.Server.Implementations.Library
 
             _itemRepository.SaveItems(items, cancellationToken);
 
-            if (ItemUpdated != null)
+            if (ItemUpdated is not null)
             {
                 foreach (var item in items)
                 {
@@ -1975,7 +1975,7 @@ namespace Emby.Server.Implementations.Library
         /// <param name="parent">The parent item.</param>
         public void ReportItemRemoved(BaseItem item, BaseItem parent)
         {
-            if (ItemRemoved != null)
+            if (ItemRemoved is not null)
             {
                 try
                 {
@@ -2006,11 +2006,11 @@ namespace Emby.Server.Implementations.Library
 
         public List<Folder> GetCollectionFolders(BaseItem item)
         {
-            while (item != null)
+            while (item is not null)
             {
                 var parent = item.GetParent();
 
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2018,7 +2018,7 @@ namespace Emby.Server.Implementations.Library
                 item = parent;
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return new List<Folder>();
             }
@@ -2028,11 +2028,11 @@ namespace Emby.Server.Implementations.Library
 
         public List<Folder> GetCollectionFolders(BaseItem item, List<Folder> allUserRootChildren)
         {
-            while (item != null)
+            while (item is not null)
             {
                 var parent = item.GetParent();
 
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2040,7 +2040,7 @@ namespace Emby.Server.Implementations.Library
                 item = parent;
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return new List<Folder>();
             }
@@ -2064,7 +2064,7 @@ namespace Emby.Server.Implementations.Library
                     .Find(folder => folder is CollectionFolder) as CollectionFolder;
             }
 
-            return collectionFolder == null ? new LibraryOptions() : collectionFolder.GetLibraryOptions();
+            return collectionFolder is null ? new LibraryOptions() : collectionFolder.GetLibraryOptions();
         }
 
         public string GetContentType(BaseItem item)
@@ -2129,7 +2129,7 @@ namespace Emby.Server.Implementations.Library
 
         private string GetTopFolderContentType(BaseItem item)
         {
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
@@ -2137,7 +2137,7 @@ namespace Emby.Server.Implementations.Library
             while (!item.ParentId.Equals(default))
             {
                 var parent = item.GetParent();
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2177,7 +2177,7 @@ namespace Emby.Server.Implementations.Library
 
             var refresh = false;
 
-            if (item == null || !string.Equals(item.Path, path, StringComparison.OrdinalIgnoreCase))
+            if (item is null || !string.Equals(item.Path, path, StringComparison.OrdinalIgnoreCase))
             {
                 Directory.CreateDirectory(path);
 
@@ -2225,7 +2225,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2251,7 +2251,7 @@ namespace Emby.Server.Implementations.Library
             if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
-                refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
+                refresh = displayParent is not null && displayParent.DateLastSaved > item.DateLastRefreshed;
             }
 
             if (refresh)
@@ -2289,7 +2289,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2315,7 +2315,7 @@ namespace Emby.Server.Implementations.Library
             if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
-                refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
+                refresh = displayParent is not null && displayParent.DateLastSaved > item.DateLastRefreshed;
             }
 
             if (refresh)
@@ -2362,7 +2362,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2394,7 +2394,7 @@ namespace Emby.Server.Implementations.Library
             if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
-                refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
+                refresh = displayParent is not null && displayParent.DateLastSaved > item.DateLastRefreshed;
             }
 
             if (refresh)
@@ -2441,7 +2441,7 @@ namespace Emby.Server.Implementations.Library
         public bool FillMissingEpisodeNumbersFromPath(Episode episode, bool forceRefresh)
         {
             var series = episode.Series;
-            bool? isAbsoluteNaming = series != null && string.Equals(series.DisplayOrder, "absolute", StringComparison.OrdinalIgnoreCase);
+            bool? isAbsoluteNaming = series is not null && string.Equals(series.DisplayOrder, "absolute", StringComparison.OrdinalIgnoreCase);
             if (!isAbsoluteNaming.Value)
             {
                 // In other words, no filter applied
@@ -2459,10 +2459,10 @@ namespace Emby.Server.Implementations.Library
                 episodeInfo = resolver.Resolve(episode.Path, isFolder, null, null, isAbsoluteNaming);
                 // Resolve from parent folder if it's not the Season folder
                 var parent = episode.GetParent();
-                if (episodeInfo == null && parent.GetType() == typeof(Folder))
+                if (episodeInfo is null && parent.GetType() == typeof(Folder))
                 {
                     episodeInfo = resolver.Resolve(parent.Path, true, null, null, isAbsoluteNaming);
-                    if (episodeInfo != null)
+                    if (episodeInfo is not null)
                     {
                         // add the container
                         episodeInfo.Container = Path.GetExtension(episode.Path)?.TrimStart('.');
@@ -2582,7 +2582,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var season = episode.Season;
 
-                if (season != null)
+                if (season is not null)
                 {
                     episode.ParentIndexNumber = season.IndexNumber;
                 }
@@ -2620,7 +2620,7 @@ namespace Emby.Server.Implementations.Library
         public IEnumerable<BaseItem> FindExtras(BaseItem owner, IReadOnlyList<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
         {
             var ownerVideoInfo = VideoResolver.Resolve(owner.Path, owner.IsFolder, _namingOptions);
-            if (ownerVideoInfo == null)
+            if (ownerVideoInfo is null)
             {
                 yield break;
             }
@@ -2640,7 +2640,7 @@ namespace Emby.Server.Implementations.Library
                         }
 
                         var extra = GetExtra(file, extraType.Value);
-                        if (extra != null)
+                        if (extra is not null)
                         {
                             yield return extra;
                         }
@@ -2649,7 +2649,7 @@ namespace Emby.Server.Implementations.Library
                 else if (!current.IsDirectory && _extraResolver.TryGetExtraTypeForOwner(current.FullName, ownerVideoInfo, out var extraType))
                 {
                     var extra = GetExtra(current, extraType.Value);
-                    if (extra != null)
+                    if (extra is not null)
                     {
                         yield return extra;
                     }
@@ -2666,7 +2666,7 @@ namespace Emby.Server.Implementations.Library
 
                 // Try to retrieve it from the db. If we don't find it, use the resolved version
                 var itemById = GetItemById(extra.Id);
-                if (itemById != null)
+                if (itemById is not null)
                 {
                     extra = itemById;
                 }
@@ -2681,10 +2681,10 @@ namespace Emby.Server.Implementations.Library
         public string GetPathAfterNetworkSubstitution(string path, BaseItem ownerItem)
         {
             string newPath;
-            if (ownerItem != null)
+            if (ownerItem is not null)
             {
                 var libraryOptions = GetLibraryOptions(ownerItem);
-                if (libraryOptions != null)
+                if (libraryOptions is not null)
                 {
                     foreach (var pathInfo in libraryOptions.PathInfos)
                     {
@@ -2753,8 +2753,8 @@ namespace Emby.Server.Implementations.Library
                     return null;
                 }
             })
-            .Where(i => i != null)
-            .Where(i => query.User == null ?
+            .Where(i => i is not null)
+            .Where(i => query.User is null ?
                 true :
                 i.IsVisible(query.User))
             .ToList();
@@ -2838,10 +2838,10 @@ namespace Emby.Server.Implementations.Library
             }
 
             var mediaPathInfos = options.PathInfos;
-            if (mediaPathInfos != null)
+            if (mediaPathInfos is not null)
             {
                 var invalidpath = mediaPathInfos.FirstOrDefault(i => !Directory.Exists(i.Path));
-                if (invalidpath != null)
+                if (invalidpath is not null)
                 {
                     throw new ArgumentException("The specified path does not exist: " + invalidpath.Path + ".");
                 }
@@ -2853,7 +2853,7 @@ namespace Emby.Server.Implementations.Library
             {
                 Directory.CreateDirectory(virtualFolderPath);
 
-                if (collectionType != null)
+                if (collectionType is not null)
                 {
                     var path = Path.Combine(virtualFolderPath, collectionType.ToString().ToLowerInvariant() + ".collection");
 
@@ -2862,7 +2862,7 @@ namespace Emby.Server.Implementations.Library
 
                 CollectionFolder.SaveLibraryOptions(virtualFolderPath, options);
 
-                if (mediaPathInfos != null)
+                if (mediaPathInfos is not null)
                 {
                     foreach (var path in mediaPathInfos)
                     {
diff --git a/Emby.Server.Implementations/Library/LiveStreamHelper.cs b/Emby.Server.Implementations/Library/LiveStreamHelper.cs
index 20624cc7ae..936a08da81 100644
--- a/Emby.Server.Implementations/Library/LiveStreamHelper.cs
+++ b/Emby.Server.Implementations/Library/LiveStreamHelper.cs
@@ -60,7 +60,7 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
                 if (addProbeDelay)
                 {
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Library
                     },
                     cancellationToken).ConfigureAwait(false);
 
-                if (cacheFilePath != null)
+                if (cacheFilePath is not null)
                 {
                     Directory.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
                     await using FileStream createStream = AsyncFile.OpenWrite(cacheFilePath);
@@ -130,7 +130,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
@@ -140,7 +140,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             var videoStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
-            if (videoStream != null)
+            if (videoStream is not null)
             {
                 if (!videoStream.BitRate.HasValue)
                 {
diff --git a/Emby.Server.Implementations/Library/MediaSourceManager.cs b/Emby.Server.Implementations/Library/MediaSourceManager.cs
index bfccc7db72..7fff6ab7b3 100644
--- a/Emby.Server.Implementations/Library/MediaSourceManager.cs
+++ b/Emby.Server.Implementations/Library/MediaSourceManager.cs
@@ -182,7 +182,7 @@ namespace Emby.Server.Implementations.Library
                     source.SupportsDirectStream = SupportsDirectStream(source.Path, source.Protocol);
                 }
 
-                if (user != null)
+                if (user is not null)
                 {
                     SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
 
@@ -248,7 +248,7 @@ namespace Emby.Server.Implementations.Library
 
             if (protocol == MediaProtocol.Http)
             {
-                if (path != null)
+                if (path is not null)
                 {
                     if (path.Contains(".m3u", StringComparison.OrdinalIgnoreCase))
                     {
@@ -328,7 +328,7 @@ namespace Emby.Server.Implementations.Library
 
             var sources = hasMediaSources.GetMediaSources(enablePathSubstitution);
 
-            if (user != null)
+            if (user is not null)
             {
                 foreach (var source in sources)
                 {
@@ -357,7 +357,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             var culture = _localizationManager.FindLanguageInfo(language);
-            if (culture != null)
+            if (culture is not null)
             {
                 return culture.ThreeLetterISOLanguageNames;
             }
@@ -383,7 +383,7 @@ namespace Emby.Server.Implementations.Library
             var preferredSubs = NormalizeLanguage(user.SubtitleLanguagePreference);
 
             var defaultAudioIndex = source.DefaultAudioStreamIndex;
-            var audioLangage = defaultAudioIndex == null
+            var audioLangage = defaultAudioIndex is null
                 ? null
                 : source.MediaStreams.Where(i => i.Type == MediaStreamType.Audio && i.Index == defaultAudioIndex).Select(i => i.Language).FirstOrDefault();
 
@@ -417,13 +417,13 @@ namespace Emby.Server.Implementations.Library
         public void SetDefaultAudioAndSubtitleStreamIndexes(BaseItem item, MediaSourceInfo source, User user)
         {
             // Item would only be null if the app didn't supply ItemId as part of the live stream open request
-            var mediaType = item == null ? MediaType.Video : item.MediaType;
+            var mediaType = item is null ? MediaType.Video : item.MediaType;
 
             if (string.Equals(mediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase))
             {
-                var userData = item == null ? new UserItemData() : _userDataManager.GetUserData(user, item);
+                var userData = item is null ? new UserItemData() : _userDataManager.GetUserData(user, item);
 
-                var allowRememberingSelection = item == null || item.EnableRememberingTrackSelections;
+                var allowRememberingSelection = item is null || item.EnableRememberingTrackSelections;
 
                 SetDefaultAudioStreamIndex(source, userData, user, allowRememberingSelection);
                 SetDefaultSubtitleStreamIndex(source, userData, user, allowRememberingSelection);
@@ -432,7 +432,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var audio = source.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-                if (audio != null)
+                if (audio is not null)
                 {
                     source.DefaultAudioStreamIndex = audio.Index;
                 }
@@ -543,7 +543,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
@@ -553,7 +553,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             var videoStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
-            if (videoStream != null)
+            if (videoStream is not null)
             {
                 if (!videoStream.BitRate.HasValue)
                 {
@@ -638,7 +638,7 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
                 if (addProbeDelay)
                 {
@@ -661,7 +661,7 @@ namespace Emby.Server.Implementations.Library
                 },
                     cancellationToken).ConfigureAwait(false);
 
-                if (cacheFilePath != null)
+                if (cacheFilePath is not null)
                 {
                     Directory.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
                     await using FileStream createStream = File.Create(cacheFilePath);
@@ -713,7 +713,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
@@ -723,7 +723,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             var videoStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
-            if (videoStream != null)
+            if (videoStream is not null)
             {
                 if (!videoStream.BitRate.HasValue)
                 {
diff --git a/Emby.Server.Implementations/Library/MediaStreamSelector.cs b/Emby.Server.Implementations/Library/MediaStreamSelector.cs
index 609b957727..74c53b2dac 100644
--- a/Emby.Server.Implementations/Library/MediaStreamSelector.cs
+++ b/Emby.Server.Implementations/Library/MediaStreamSelector.cs
@@ -19,7 +19,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var defaultStream = sortedStreams.FirstOrDefault(i => i.IsDefault);
 
-                if (defaultStream != null)
+                if (defaultStream is not null)
                 {
                     return defaultStream.Index;
                 }
diff --git a/Emby.Server.Implementations/Library/ResolverHelper.cs b/Emby.Server.Implementations/Library/ResolverHelper.cs
index 4100a74a58..dedb56d678 100644
--- a/Emby.Server.Implementations/Library/ResolverHelper.cs
+++ b/Emby.Server.Implementations/Library/ResolverHelper.cs
@@ -31,7 +31,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             // If the resolver didn't specify this
-            if (parent != null)
+            if (parent is not null)
             {
                 item.SetParent(parent);
             }
@@ -43,7 +43,7 @@ namespace Emby.Server.Implementations.Library
 
             // Make sure DateCreated and DateModified have values
             var fileInfo = directoryService.GetFile(item.Path);
-            if (fileInfo == null)
+            if (fileInfo is null)
             {
                 return false;
             }
@@ -71,7 +71,7 @@ namespace Emby.Server.Implementations.Library
             }
 
             // If the resolver didn't specify this
-            if (args.Parent != null)
+            if (args.Parent is not null)
             {
                 item.SetParent(args.Parent);
             }
@@ -113,7 +113,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var childData = args.IsDirectory ? args.GetFileSystemEntryByPath(item.Path) : null;
 
-                if (childData != null)
+                if (childData is not null)
                 {
                     SetDateCreated(item, childData);
                 }
@@ -140,7 +140,7 @@ namespace Emby.Server.Implementations.Library
             if (config.UseFileCreationTimeForDateAdded)
             {
                 // directoryService.getFile may return null
-                if (info != null)
+                if (info is not null)
                 {
                     var dateCreated = info.CreationTimeUtc;
 
diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
index 7a6aea9c1f..06621700aa 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
@@ -45,7 +45,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         {
             var result = ResolveMultipleInternal(parent, files, collectionType);
 
-            if (result != null)
+            if (result is not null)
             {
                 foreach (var item in result.Items)
                 {
@@ -116,7 +116,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
 
                 // Use regular audio type for mixed libraries, owned items and music
                 if (isMixedCollectionType ||
-                    args.Parent == null ||
+                    args.Parent is null ||
                     isMusicCollectionType)
                 {
                     item = new MediaBrowser.Controller.Entities.Audio.Audio();
@@ -126,7 +126,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                     item = new AudioBook();
                 }
 
-                if (item != null)
+                if (item is not null)
                 {
                     item.IsShortcut = string.Equals(extension, ".strm", StringComparison.OrdinalIgnoreCase);
 
@@ -144,7 +144,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             // TODO: Allow GetMultiDiscMovie in here
             var result = ResolveMultipleAudio(args.Parent, args.GetActualFileSystemChildren(), parseName);
 
-            if (result == null || result.Items.Count != 1 || result.Items[0] is not AudioBook item)
+            if (result is null || result.Items.Count != 1 || result.Items[0] is not AudioBook item)
             {
                 return null;
             }
@@ -183,7 +183,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                 Items = items
             };
 
-            var isInMixedFolder = resolverResult.Count > 1 || (parent != null && parent.IsTopParent);
+            var isInMixedFolder = resolverResult.Count > 1 || (parent is not null && parent.IsTopParent);
 
             foreach (var resolvedItem in resolverResult)
             {
diff --git a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
index b2a7abb1bd..cb377136ad 100644
--- a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
@@ -79,7 +79,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                         videoType = VideoType.Dvd;
                     }
 
-                    if (videoType == null)
+                    if (videoType is null)
                     {
                         continue;
                     }
@@ -93,7 +93,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 videoInfo = VideoResolver.Resolve(args.Path, false, NamingOptions, parseName);
             }
 
-            if (videoInfo == null || (!videoInfo.IsStub && !VideoResolver.IsVideoFile(args.Path, NamingOptions)))
+            if (videoInfo is null || (!videoInfo.IsStub && !VideoResolver.IsVideoFile(args.Path, NamingOptions)))
             {
                 return null;
             }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
index 6fc200e3b1..042422c6f4 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Books
 
             var extension = Path.GetExtension(args.Path);
 
-            if (extension != null && _validExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
+            if (extension is not null && _validExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
             {
                 // It's a book
                 return new Book
diff --git a/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs b/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
index 408e640f9d..30c52e19d3 100644
--- a/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
@@ -48,7 +48,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
         public bool TryGetExtraTypeForOwner(string path, VideoFileInfo ownerVideoFileInfo, [NotNullWhen(true)] out ExtraType? extraType)
         {
             var extraResult = GetExtraInfo(path, _namingOptions);
-            if (extraResult.ExtraType == null)
+            if (extraResult.ExtraType is null)
             {
                 extraType = null;
                 return false;
diff --git a/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
index 0799622825..1c2de912aa 100644
--- a/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
@@ -22,7 +22,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
         {
             base.SetInitialItemValues(item, args);
 
-            item.IsRoot = args.Parent == null;
+            item.IsRoot = args.Parent is null;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
index 84d4688aff..5f1a3ec6de 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
@@ -64,7 +64,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
         {
             var result = ResolveMultipleInternal(parent, files, collectionType);
 
-            if (result != null)
+            if (result is not null)
             {
                 foreach (var item in result.Items)
                 {
@@ -108,7 +108,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 if (string.IsNullOrEmpty(collectionType))
                 {
                     // Owned items will be caught by the video extra resolver
-                    if (args.Parent == null)
+                    if (args.Parent is null)
                     {
                         return null;
                     }
@@ -127,10 +127,10 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 }
 
                 // ignore extras
-                return movie?.ExtraType == null ? movie : null;
+                return movie?.ExtraType is null ? movie : null;
             }
 
-            if (args.Parent == null)
+            if (args.Parent is null)
             {
                 return base.Resolve(args);
             }
@@ -168,12 +168,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             }
 
             // Ignore extras
-            if (item?.ExtraType != null)
+            if (item?.ExtraType is not null)
             {
                 return null;
             }
 
-            if (item != null)
+            if (item is not null)
             {
                 item.IsInMixedFolder = true;
             }
@@ -205,7 +205,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             if (string.IsNullOrEmpty(collectionType))
             {
                 // Owned items should just use the plain video type
-                if (parent == null)
+                if (parent is null)
                 {
                     return ResolveVideos<Video>(parent, files, false, collectionType, false);
                 }
@@ -268,7 +268,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
 
             var videoInfos = files
                 .Select(i => VideoResolver.Resolve(i.FullName, i.IsDirectory, NamingOptions, parseName))
-                .Where(f => f != null)
+                .Where(f => f is not null)
                 .ToList();
 
             var resolverResult = VideoListResolver.Resolve(videoInfos, NamingOptions, supportMultiEditions, parseName);
@@ -284,7 +284,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             {
                 var firstVideo = video.Files[0];
                 var path = firstVideo.Path;
-                if (video.ExtraType != null)
+                if (video.ExtraType is not null)
                 {
                     result.ExtraFiles.Add(files.Find(f => string.Equals(f.FullName, path, StringComparison.OrdinalIgnoreCase)));
                     continue;
@@ -568,7 +568,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
 
         private bool IsInvalid(Folder parent, ReadOnlySpan<char> collectionType)
         {
-            if (parent != null)
+            if (parent is not null)
             {
                 if (parent.IsRoot)
                 {
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
index 9ba079edfd..0fcc5070b3 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
         {
             var parent = args.Parent;
 
-            if (parent == null)
+            if (parent is null)
             {
                 return null;
             }
@@ -46,34 +46,34 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
 
             // If the parent is a Season or Series and the parent is not an extras folder, then this is an Episode if the VideoResolver returns something
             // Also handle flat tv folders
-            if (season != null ||
+            if (season is not null ||
                 string.Equals(args.GetCollectionType(), CollectionType.TvShows, StringComparison.OrdinalIgnoreCase) ||
                 args.HasParent<Series>())
             {
                 var episode = ResolveVideo<Episode>(args, false);
 
                 // Ignore extras
-                if (episode == null || episode.ExtraType != null)
+                if (episode is null || episode.ExtraType is not null)
                 {
                     return null;
                 }
 
                 var series = parent as Series ?? parent.GetParents().OfType<Series>().FirstOrDefault();
 
-                if (series != null)
+                if (series is not null)
                 {
                     episode.SeriesId = series.Id;
                     episode.SeriesName = series.Name;
                 }
 
-                if (season != null)
+                if (season is not null)
                 {
                     episode.SeasonId = season.Id;
                     episode.SeasonName = season.Name;
                 }
 
                 // Assume season 1 if there's no season folder and a season number could not be determined
-                if (season == null && !episode.ParentIndexNumber.HasValue && (episode.IndexNumber.HasValue || episode.PremiereDate.HasValue))
+                if (season is null && !episode.ParentIndexNumber.HasValue && (episode.IndexNumber.HasValue || episode.PremiereDate.HasValue))
                 {
                     episode.ParentIndexNumber = 1;
                 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
index ea48514587..62a524d2eb 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
@@ -66,7 +66,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
 
                     var episodeInfo = resolver.Resolve(testPath, true);
 
-                    if (episodeInfo?.EpisodeNumber != null && episodeInfo.SeasonNumber.HasValue)
+                    if (episodeInfo?.EpisodeNumber is not null && episodeInfo.SeasonNumber.HasValue)
                     {
                         _logger.LogDebug(
                             "Found folder underneath series with episode number: {0}. Season {1}. Episode {2}",
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
index f5ac3c665e..8f69175d07 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
@@ -76,7 +76,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 {
                     if (args.ContainsFileSystemEntryByName("tvshow.nfo"))
                     {
-                        if (args.Parent != null && args.Parent.IsRoot)
+                        if (args.Parent is not null && args.Parent.IsRoot)
                         {
                             // For now, return null, but if we want to allow this in the future then add some additional checks to guard against a misplaced tvshow.nfo
                             return null;
@@ -89,7 +89,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                         };
                     }
 
-                    if (args.Parent != null && args.Parent.IsRoot)
+                    if (args.Parent is not null && args.Parent.IsRoot)
                     {
                         return null;
                     }
@@ -138,7 +138,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                         var episodeResolver = new Naming.TV.EpisodeResolver(namingOptions);
 
                         var episodeInfo = episodeResolver.Resolve(fullName, false, true, false, fillExtendedInfo: false);
-                        if (episodeInfo != null && episodeInfo.EpisodeNumber.HasValue)
+                        if (episodeInfo is not null && episodeInfo.EpisodeNumber.HasValue)
                         {
                             return true;
                         }
diff --git a/Emby.Server.Implementations/Library/UserDataManager.cs b/Emby.Server.Implementations/Library/UserDataManager.cs
index aecab7d9c8..a0a90b129f 100644
--- a/Emby.Server.Implementations/Library/UserDataManager.cs
+++ b/Emby.Server.Implementations/Library/UserDataManager.cs
@@ -126,7 +126,7 @@ namespace Emby.Server.Implementations.Library
         {
             var userData = _repository.GetUserData(internalUserId, keys);
 
-            if (userData != null)
+            if (userData is not null)
             {
                 return userData;
             }
diff --git a/Emby.Server.Implementations/Library/UserViewManager.cs b/Emby.Server.Implementations/Library/UserViewManager.cs
index ec411aa3ba..1137625f44 100644
--- a/Emby.Server.Implementations/Library/UserViewManager.cs
+++ b/Emby.Server.Implementations/Library/UserViewManager.cs
@@ -47,7 +47,7 @@ namespace Emby.Server.Implementations.Library
         {
             var user = _userManager.GetUserById(query.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User Id specified in the query does not exist.", nameof(query));
             }
@@ -72,7 +72,7 @@ namespace Emby.Server.Implementations.Library
                     continue;
                 }
 
-                if (collectionFolder != null && UserView.IsEligibleForGrouping(folder) && user.IsFolderGrouped(folder.Id))
+                if (collectionFolder is not null && UserView.IsEligibleForGrouping(folder) && user.IsFolderGrouped(folder.Id))
                 {
                     groupedFolders.Add(collectionFolder);
                     continue;
@@ -208,15 +208,15 @@ namespace Emby.Server.Implementations.Library
                 // Only grab the index container for media
                 var container = item.IsFolder || !request.GroupItems ? null : item.LatestItemsIndexContainer;
 
-                if (container == null)
+                if (container is null)
                 {
                     list.Add(new Tuple<BaseItem, List<BaseItem>>(null, new List<BaseItem> { item }));
                 }
                 else
                 {
-                    var current = list.FirstOrDefault(i => i.Item1 != null && i.Item1.Id.Equals(container.Id));
+                    var current = list.FirstOrDefault(i => i.Item1 is not null && i.Item1.Id.Equals(container.Id));
 
-                    if (current != null)
+                    if (current is not null)
                     {
                         current.Item2.Add(item);
                     }
diff --git a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
index 88b93a2115..df45793c3a 100644
--- a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
+++ b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
@@ -118,7 +118,7 @@ namespace Emby.Server.Implementations.Library.Validators
                 try
                 {
                     var boxSet = boxSets.FirstOrDefault(b => b?.Name == collectionName) as BoxSet;
-                    if (boxSet == null)
+                    if (boxSet is null)
                     {
                         // won't automatically create collection if only one movie in it
                         if (movieIds.Count >= 2)
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/DirectRecorder.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/DirectRecorder.cs
index b2d25fdaeb..49833de737 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/DirectRecorder.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/DirectRecorder.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
         public Task Record(IDirectStreamProvider? directStreamProvider, MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
         {
-            if (directStreamProvider != null)
+            if (directStreamProvider is not null)
             {
                 return RecordFromDirectStreamProvider(directStreamProvider, targetFile, duration, onStarted, cancellationToken);
             }
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
index cf9be5a54a..8f5fa86944 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
@@ -295,7 +295,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }
 
                 var program = GetProgramInfoFromCache(timer);
-                if (program == null)
+                if (program is null)
                 {
                     OnTimerOutOfDate(timer);
                     continue;
@@ -367,7 +367,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             {
                 var epgChannel = GetEpgChannelFromTunerChannel(info, tunerChannel, epgChannels);
 
-                if (epgChannel != null)
+                if (epgChannel is not null)
                 {
                     if (!string.IsNullOrWhiteSpace(epgChannel.Name))
                     {
@@ -450,7 +450,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var channel = epgChannelData.GetChannelById(mappedTunerChannelId);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     return channel;
                 }
@@ -473,7 +473,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var channel = epgChannelData.GetChannelById(mappedTunerChannelId);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     return channel;
                 }
@@ -490,7 +490,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var channel = epgChannelData.GetChannelByNumber(tunerChannelNumber);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     return channel;
                 }
@@ -502,7 +502,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var channel = epgChannelData.GetChannelByName(normalizedName);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     return channel;
                 }
@@ -552,7 +552,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             }
 
             var remove = _seriesTimerProvider.GetAll().FirstOrDefault(r => string.Equals(r.Id, timerId, StringComparison.OrdinalIgnoreCase));
-            if (remove != null)
+            if (remove is not null)
             {
                 _seriesTimerProvider.Delete(remove);
             }
@@ -563,7 +563,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         private void CancelTimerInternal(string timerId, bool isSeriesCancelled, bool isManualCancellation)
         {
             var timer = _timerProvider.GetTimer(timerId);
-            if (timer != null)
+            if (timer is not null)
             {
                 var statusChanging = timer.Status != RecordingStatus.Cancelled;
                 timer.Status = RecordingStatus.Cancelled;
@@ -582,7 +582,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     _timerProvider.AddOrUpdate(timer, false);
                 }
 
-                if (statusChanging && TimerCancelled != null)
+                if (statusChanging && TimerCancelled is not null)
                 {
                     TimerCancelled(this, new GenericEventArgs<string>(timerId));
                 }
@@ -617,7 +617,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 null :
                 _timerProvider.GetTimerByProgramId(info.ProgramId);
 
-            if (existingTimer != null)
+            if (existingTimer is not null)
             {
                 if (existingTimer.Status == RecordingStatus.Cancelled
                     || existingTimer.Status == RecordingStatus.Completed)
@@ -642,13 +642,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 programInfo = GetProgramInfoFromCache(info);
             }
 
-            if (programInfo == null)
+            if (programInfo is null)
             {
                 _logger.LogInformation("Unable to find program with Id {0}. Will search using start date", info.ProgramId);
                 programInfo = GetProgramInfoFromCache(info.ChannelId, info.StartDate);
             }
 
-            if (programInfo != null)
+            if (programInfo is not null)
             {
                 CopyProgramInfoToTimerInfo(programInfo, info);
             }
@@ -668,7 +668,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             // populate info.seriesID
             var program = GetProgramInfoFromCache(info.ProgramId);
 
-            if (program != null)
+            if (program is not null)
             {
                 info.SeriesId = program.ExternalSeriesId;
             }
@@ -714,7 +714,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             var instance = _seriesTimerProvider.GetAll().FirstOrDefault(i => string.Equals(i.Id, info.Id, StringComparison.OrdinalIgnoreCase));
 
-            if (instance != null)
+            if (instance is not null)
             {
                 instance.ChannelId = info.ChannelId;
                 instance.Days = info.Days;
@@ -744,7 +744,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             var existingTimer = _timerProvider.GetTimer(updatedTimer.Id);
 
-            if (existingTimer == null)
+            if (existingTimer is null)
             {
                 throw new ResourceNotFoundException();
             }
@@ -861,7 +861,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }
             };
 
-            if (program != null)
+            if (program is not null)
             {
                 defaults.SeriesId = program.SeriesId;
                 defaults.ProgramId = program.Id;
@@ -912,7 +912,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var epgChannel = await GetEpgChannelFromTunerChannel(provider.Item1, provider.Item2, channel, cancellationToken).ConfigureAwait(false);
 
-                if (epgChannel == null)
+                if (epgChannel is null)
                 {
                     _logger.LogDebug("EPG channel not found for tuner channel {0}-{1} from {2}-{3}", channel.Number, channel.Name, provider.Item1.Name, provider.Item2.ListingsId ?? string.Empty);
                     continue;
@@ -945,9 +945,9 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 {
                     var provider = _liveTvManager.ListingProviders.FirstOrDefault(l => string.Equals(l.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                    return provider == null ? null : new Tuple<IListingsProvider, ListingsProviderInfo>(provider, i);
+                    return provider is null ? null : new Tuple<IListingsProvider, ListingsProviderInfo>(provider, i);
                 })
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .ToList();
         }
 
@@ -964,7 +964,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 null :
                 currentLiveStreams.FirstOrDefault(i => string.Equals(i.OriginalStreamId, streamId, StringComparison.OrdinalIgnoreCase));
 
-            if (result != null && result.EnableStreamSharing)
+            if (result is not null && result.EnableStreamSharing)
             {
                 result.ConsumerCount++;
 
@@ -1134,7 +1134,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 // trim trailing period from the folder name
                 var folderName = _fileSystem.GetValidFilename(timer.Name).Trim().TrimEnd('.').Trim();
 
-                if (metadata != null && metadata.ProductionYear.HasValue)
+                if (metadata is not null && metadata.ProductionYear.HasValue)
                 {
                     folderName += " (" + metadata.ProductionYear.Value.ToString(CultureInfo.InvariantCulture) + ")";
                 }
@@ -1232,13 +1232,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 programInfo = GetProgramInfoFromCache(timer);
             }
 
-            if (programInfo == null)
+            if (programInfo is null)
             {
                 _logger.LogInformation("Unable to find program with Id {0}. Will search using start date", timer.ProgramId);
                 programInfo = GetProgramInfoFromCache(timer.ChannelId, timer.StartDate);
             }
 
-            if (programInfo != null)
+            if (programInfo is not null)
             {
                 CopyProgramInfoToTimerInfo(programInfo, timer);
             }
@@ -1412,7 +1412,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
             var item = GetAffectedBaseItem(Path.GetDirectoryName(path));
 
-            if (item != null)
+            if (item is not null)
             {
                 _logger.LogInformation("Refreshing recording parent {Path}", item.Path);
 
@@ -1437,19 +1437,19 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
             var parentPath = Path.GetDirectoryName(path);
 
-            while (item == null && !string.IsNullOrEmpty(path))
+            while (item is null && !string.IsNullOrEmpty(path))
             {
                 item = _libraryManager.FindByPath(path, null);
 
                 path = Path.GetDirectoryName(path);
             }
 
-            if (item != null)
+            if (item is not null)
             {
                 if (item.GetType() == typeof(Folder) && string.Equals(item.Path, parentPath, StringComparison.OrdinalIgnoreCase))
                 {
                     var parentItem = item.GetParent();
-                    if (parentItem != null && parentItem is not AggregateFolder)
+                    if (parentItem is not null && parentItem is not AggregateFolder)
                     {
                         item = parentItem;
                     }
@@ -1474,7 +1474,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             var seriesTimerId = timer.SeriesTimerId;
             var seriesTimer = _seriesTimerProvider.GetAll().FirstOrDefault(i => string.Equals(i.Id, seriesTimerId, StringComparison.OrdinalIgnoreCase));
 
-            if (seriesTimer == null || seriesTimer.KeepUpTo <= 0)
+            if (seriesTimer is null || seriesTimer.KeepUpTo <= 0)
             {
                 return;
             }
@@ -1569,7 +1569,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             var libraryItem = _libraryManager.FindByPath(timer.RecordingPath, false);
 
-            if (libraryItem != null)
+            if (libraryItem is not null)
             {
                 _libraryManager.DeleteItem(
                     libraryItem,
@@ -1695,7 +1695,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 _ => null
             };
 
-            if (imageSaveFilenameWithoutExtension == null)
+            if (imageSaveFilenameWithoutExtension is null)
             {
                 return;
             }
@@ -1714,7 +1714,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 (program.GetImageInfo(ImageType.Thumb, 0) ?? program.GetImageInfo(ImageType.Primary, 0)) :
                 (program.GetImageInfo(ImageType.Primary, 0) ?? program.GetImageInfo(ImageType.Thumb, 0));
 
-            if (image != null)
+            if (image is not null)
             {
                 try
                 {
@@ -1729,7 +1729,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             if (!program.IsSeries)
             {
                 image = program.GetImageInfo(ImageType.Backdrop, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -1742,7 +1742,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }
 
                 image = program.GetImageInfo(ImageType.Thumb, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -1755,7 +1755,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }
 
                 image = program.GetImageInfo(ImageType.Logo, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -1782,7 +1782,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }).FirstOrDefault() as LiveTvProgram;
 
                 // dummy this up
-                if (program == null)
+                if (program is null)
                 {
                     program = new LiveTvProgram
                     {
@@ -2240,7 +2240,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                         ? null
                         : _timerProvider.GetTimerByProgramId(timer.ProgramId));
 
-                if (existingTimer == null)
+                if (existingTimer is null)
                 {
                     if (ShouldCancelTimerForSeriesTimer(seriesTimer, timer))
                     {
@@ -2367,13 +2367,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                             DtoOptions = new DtoOptions()
                         }).FirstOrDefault() as LiveTvChannel;
 
-                    if (channel != null && !string.IsNullOrWhiteSpace(channel.ExternalId))
+                    if (channel is not null && !string.IsNullOrWhiteSpace(channel.ExternalId))
                     {
                         tempChannelCache[parent.ChannelId] = channel;
                     }
                 }
 
-                if (channel != null || tempChannelCache.TryGetValue(parent.ChannelId, out channel))
+                if (channel is not null || tempChannelCache.TryGetValue(parent.ChannelId, out channel))
                 {
                     channelId = channel.ExternalId;
                 }
@@ -2426,13 +2426,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                             DtoOptions = new DtoOptions()
                         }).FirstOrDefault() as LiveTvChannel;
 
-                    if (channel != null && !string.IsNullOrWhiteSpace(channel.ExternalId))
+                    if (channel is not null && !string.IsNullOrWhiteSpace(channel.ExternalId))
                     {
                         tempChannelCache[programInfo.ChannelId] = channel;
                     }
                 }
 
-                if (channel != null || tempChannelCache.TryGetValue(programInfo.ChannelId, out channel))
+                if (channel is not null || tempChannelCache.TryGetValue(programInfo.ChannelId, out channel))
                 {
                     channelId = channel.ExternalId;
                 }
@@ -2626,7 +2626,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             {
                 var configuredDevice = configuredDevices.FirstOrDefault(i => string.Equals(i.DeviceId, device.DeviceId, StringComparison.OrdinalIgnoreCase));
 
-                if (configuredDevice != null && !string.Equals(device.Url, configuredDevice.Url, StringComparison.OrdinalIgnoreCase))
+                if (configuredDevice is not null && !string.Equals(device.Url, configuredDevice.Url, StringComparison.OrdinalIgnoreCase))
                 {
                     _logger.LogInformation("Tuner url has changed from {PreviousUrl} to {NewUrl}", configuredDevice.Url, device.Url);
 
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs
index 08534de59d..5369c9b3d1 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs
@@ -208,7 +208,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
             // var audioChannels = 2;
             // var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
-            // if (audioStream != null)
+            // if (audioStream is not null)
             // {
             //    audioChannels = audioStream.Channels ?? audioChannels;
             // }
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
index 58b798ce67..d5a6feb470 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
@@ -36,7 +36,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         [MemberNotNull(nameof(_items))]
         private void EnsureLoaded()
         {
-            if (_items != null)
+            if (_items is not null)
             {
                 return;
             }
@@ -49,7 +49,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 {
                     var bytes = File.ReadAllBytes(_dataPath);
                     _items = JsonSerializer.Deserialize<T[]>(bytes, _jsonOptions);
-                    if (_items == null)
+                    if (_items is null)
                     {
                         Logger.LogError("Error deserializing {Path}, data was null", _dataPath);
                         _items = Array.Empty<T>();
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/RecordingHelper.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/RecordingHelper.cs
index 40dcca94f6..7bbeae866a 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/RecordingHelper.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/RecordingHelper.cs
@@ -63,7 +63,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                     }
                 }
             }
-            else if (info.IsMovie && info.ProductionYear != null)
+            else if (info.IsMovie && info.ProductionYear is not null)
             {
                 name += " (" + info.ProductionYear + ")";
             }
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/TimerManager.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/TimerManager.cs
index f612565d1b..1dfdfe84de 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/TimerManager.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/TimerManager.cs
@@ -165,7 +165,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             var timerId = (string?)state ?? throw new ArgumentNullException(nameof(state));
 
             var timer = GetAll().FirstOrDefault(i => string.Equals(i.Id, timerId, StringComparison.OrdinalIgnoreCase));
-            if (timer != null)
+            if (timer is not null)
             {
                 TimerFired?.Invoke(this, new GenericEventArgs<TimerInfo>(timer));
             }
diff --git a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
index b981ad81a7..7db7ac576e 100644
--- a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
+++ b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
@@ -111,7 +111,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var response = await Send(options, true, info, cancellationToken).ConfigureAwait(false);
             await using var responseStream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var dailySchedules = await JsonSerializer.DeserializeAsync<IReadOnlyList<DayDto>>(responseStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (dailySchedules == null)
+            if (dailySchedules is null)
             {
                 return Array.Empty<ProgramInfo>();
             }
@@ -127,7 +127,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var innerResponse = await Send(programRequestOptions, true, info, cancellationToken).ConfigureAwait(false);
             await using var innerResponseStream = await innerResponse.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var programDetails = await JsonSerializer.DeserializeAsync<IReadOnlyList<ProgramDetailsDto>>(innerResponseStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (programDetails == null)
+            if (programDetails is null)
             {
                 return Array.Empty<ProgramInfo>();
             }
@@ -153,7 +153,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                     continue;
                 }
 
-                if (images != null)
+                if (images is not null)
                 {
                     var imageIndex = images.FindIndex(i => i.ProgramId == schedule.ProgramId[..10]);
                     if (imageIndex > -1)
@@ -228,7 +228,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
 
         private ProgramInfo GetProgram(string channelId, ProgramDto programInfo, ProgramDetailsDto details)
         {
-            if (programInfo.AirDateTime == null)
+            if (programInfo.AirDateTime is null)
             {
                 return null;
             }
@@ -266,7 +266,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             }
 
             string episodeTitle = null;
-            if (details.EpisodeTitle150 != null)
+            if (details.EpisodeTitle150 is not null)
             {
                 episodeTitle = details.EpisodeTitle150;
             }
@@ -283,7 +283,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 EpisodeTitle = episodeTitle,
                 Audio = audioType,
                 // IsNew = programInfo.@new ?? false,
-                IsRepeat = programInfo.New == null,
+                IsRepeat = programInfo.New is null,
                 IsSeries = string.Equals(details.EntityType, "episode", StringComparison.OrdinalIgnoreCase),
                 ImageUrl = details.PrimaryImage,
                 ThumbImageUrl = details.ThumbImage,
@@ -315,13 +315,13 @@ namespace Emby.Server.Implementations.LiveTv.Listings
 
             info.ShowId = showId;
 
-            if (programInfo.VideoProperties != null)
+            if (programInfo.VideoProperties is not null)
             {
                 info.IsHD = programInfo.VideoProperties.Contains("hdtv", StringComparison.OrdinalIgnoreCase);
                 info.Is3D = programInfo.VideoProperties.Contains("3d", StringComparison.OrdinalIgnoreCase);
             }
 
-            if (details.ContentRating != null && details.ContentRating.Count > 0)
+            if (details.ContentRating is not null && details.ContentRating.Count > 0)
             {
                 info.OfficialRating = details.ContentRating[0].Code.Replace("TV", "TV-", StringComparison.Ordinal)
                     .Replace("--", "-", StringComparison.Ordinal);
@@ -333,13 +333,13 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 }
             }
 
-            if (details.Descriptions != null)
+            if (details.Descriptions is not null)
             {
-                if (details.Descriptions.Description1000 != null && details.Descriptions.Description1000.Count > 0)
+                if (details.Descriptions.Description1000 is not null && details.Descriptions.Description1000.Count > 0)
                 {
                     info.Overview = details.Descriptions.Description1000[0].Description;
                 }
-                else if (details.Descriptions.Description100 != null && details.Descriptions.Description100.Count > 0)
+                else if (details.Descriptions.Description100 is not null && details.Descriptions.Description100.Count > 0)
                 {
                     info.Overview = details.Descriptions.Description100[0].Description;
                 }
@@ -351,12 +351,12 @@ namespace Emby.Server.Implementations.LiveTv.Listings
 
                 info.SeriesProviderIds[MetadataProvider.Zap2It.ToString()] = info.SeriesId;
 
-                if (details.Metadata != null)
+                if (details.Metadata is not null)
                 {
                     foreach (var metadataProgram in details.Metadata)
                     {
                         var gracenote = metadataProgram.Gracenote;
-                        if (gracenote != null)
+                        if (gracenote is not null)
                         {
                             info.SeasonNumber = gracenote.Season;
 
@@ -371,13 +371,13 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 }
             }
 
-            if (details.OriginalAirDate != null)
+            if (details.OriginalAirDate is not null)
             {
                 info.OriginalAirDate = details.OriginalAirDate;
                 info.ProductionYear = info.OriginalAirDate.Value.Year;
             }
 
-            if (details.Movie != null)
+            if (details.Movie is not null)
             {
                 if (!string.IsNullOrEmpty(details.Movie.Year)
                     && int.TryParse(details.Movie.Year, out int year))
@@ -386,7 +386,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 }
             }
 
-            if (details.Genres != null)
+            if (details.Genres is not null)
             {
                 info.Genres = details.Genres.Where(g => !string.IsNullOrWhiteSpace(g)).ToList();
                 info.IsNews = details.Genres.Contains("news", StringComparison.OrdinalIgnoreCase);
@@ -407,7 +407,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 .ThenByDescending(i => GetSizeOrder(i))
                 .FirstOrDefault();
 
-            if (match == null)
+            if (match is null)
             {
                 return null;
             }
@@ -518,7 +518,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
 
                 var root = await JsonSerializer.DeserializeAsync<IReadOnlyList<HeadendsDto>>(response, _jsonOptions, cancellationToken).ConfigureAwait(false);
 
-                if (root != null)
+                if (root is not null)
                 {
                     foreach (HeadendsDto headend in root)
                     {
@@ -785,7 +785,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var httpResponse = await Send(options, true, info, cancellationToken).ConfigureAwait(false);
             await using var stream = await httpResponse.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var root = await JsonSerializer.DeserializeAsync<ChannelDto>(stream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (root == null)
+            if (root is null)
             {
                 return new List<ChannelInfo>();
             }
@@ -814,7 +814,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                     Name = string.IsNullOrWhiteSpace(station.Name) ? channelNumber : station.Name
                 };
 
-                if (station.Logo != null)
+                if (station.Logo is not null)
                 {
                     channelInfo.ImageUrl = station.Logo.Url;
                 }
diff --git a/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs b/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
index 264eec947a..e874990da1 100644
--- a/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
+++ b/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
@@ -151,9 +151,9 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 Overview = program.Description,
                 ProductionYear = program.CopyrightDate?.Year,
                 SeasonNumber = program.Episode?.Series,
-                IsSeries = program.Episode != null,
+                IsSeries = program.Episode is not null,
                 IsRepeat = program.IsPreviouslyShown && !program.IsNew,
-                IsPremiere = program.Premiere != null,
+                IsPremiere = program.Premiere is not null,
                 IsKids = program.Categories.Any(c => info.KidsCategories.Contains(c, StringComparison.OrdinalIgnoreCase)),
                 IsMovie = program.Categories.Any(c => info.MovieCategories.Contains(c, StringComparison.OrdinalIgnoreCase)),
                 IsNews = program.Categories.Any(c => info.NewsCategories.Contains(c, StringComparison.OrdinalIgnoreCase)),
@@ -162,7 +162,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 HasImage = !string.IsNullOrEmpty(program.Icon?.Source),
                 OfficialRating = string.IsNullOrEmpty(program.Rating?.Value) ? null : program.Rating.Value,
                 CommunityRating = program.StarRating,
-                SeriesId = program.Episode == null ? null : program.Title?.GetMD5().ToString("N", CultureInfo.InvariantCulture)
+                SeriesId = program.Episode is null ? null : program.Title?.GetMD5().ToString("N", CultureInfo.InvariantCulture)
             };
 
             if (string.IsNullOrWhiteSpace(program.ProgramId))
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
index c09f9cf8d0..9326fbd5c7 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
@@ -80,7 +80,7 @@ namespace Emby.Server.Implementations.LiveTv
                 dto.ProgramId = GetInternalProgramId(info.ProgramId).ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (program != null)
+            if (program is not null)
             {
                 dto.ProgramInfo = _dtoService.GetBaseItemDto(program, new DtoOptions());
 
@@ -98,7 +98,7 @@ namespace Emby.Server.Implementations.LiveTv
                 }
             }
 
-            if (channel != null)
+            if (channel is not null)
             {
                 dto.ChannelName = channel.Name;
 
@@ -150,7 +150,7 @@ namespace Emby.Server.Implementations.LiveTv
                 dto.ProgramId = GetInternalProgramId(info.ProgramId).ToString("N", CultureInfo.InvariantCulture);
             }
 
-            dto.DayPattern = info.Days == null ? null : GetDayPattern(info.Days.ToArray());
+            dto.DayPattern = info.Days is null ? null : GetDayPattern(info.Days.ToArray());
 
             FillImages(dto, info.Name, info.SeriesId);
 
@@ -168,10 +168,10 @@ namespace Emby.Server.Implementations.LiveTv
                 DtoOptions = new DtoOptions(false)
             }).FirstOrDefault();
 
-            if (librarySeries != null)
+            if (librarySeries is not null)
             {
                 var image = librarySeries.GetImageInfo(ImageType.Thumb, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -185,7 +185,7 @@ namespace Emby.Server.Implementations.LiveTv
                 }
 
                 image = librarySeries.GetImageInfo(ImageType.Backdrop, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -212,10 +212,10 @@ namespace Emby.Server.Implementations.LiveTv
                 Name = string.IsNullOrEmpty(programSeriesId) ? seriesName : null
             }).FirstOrDefault();
 
-            if (program != null)
+            if (program is not null)
             {
                 var image = program.GetImageInfo(ImageType.Primary, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -228,10 +228,10 @@ namespace Emby.Server.Implementations.LiveTv
                     }
                 }
 
-                if (dto.ParentBackdropImageTags == null || dto.ParentBackdropImageTags.Length == 0)
+                if (dto.ParentBackdropImageTags is null || dto.ParentBackdropImageTags.Length == 0)
                 {
                     image = program.GetImageInfo(ImageType.Backdrop, 0);
-                    if (image != null)
+                    if (image is not null)
                     {
                         try
                         {
@@ -262,10 +262,10 @@ namespace Emby.Server.Implementations.LiveTv
                 DtoOptions = new DtoOptions(false)
             }).FirstOrDefault();
 
-            if (librarySeries != null)
+            if (librarySeries is not null)
             {
                 var image = librarySeries.GetImageInfo(ImageType.Thumb, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -279,7 +279,7 @@ namespace Emby.Server.Implementations.LiveTv
                 }
 
                 image = librarySeries.GetImageInfo(ImageType.Backdrop, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -305,7 +305,7 @@ namespace Emby.Server.Implementations.LiveTv
                 DtoOptions = new DtoOptions(false)
             }).FirstOrDefault();
 
-            if (program == null)
+            if (program is null)
             {
                 program = _libraryManager.GetItemList(new InternalItemsQuery
                 {
@@ -318,10 +318,10 @@ namespace Emby.Server.Implementations.LiveTv
                 }).FirstOrDefault();
             }
 
-            if (program != null)
+            if (program is not null)
             {
                 var image = program.GetImageInfo(ImageType.Primary, 0);
-                if (image != null)
+                if (image is not null)
                 {
                     try
                     {
@@ -334,10 +334,10 @@ namespace Emby.Server.Implementations.LiveTv
                     }
                 }
 
-                if (dto.ParentBackdropImageTags == null || dto.ParentBackdropImageTags.Length == 0)
+                if (dto.ParentBackdropImageTags is null || dto.ParentBackdropImageTags.Length == 0)
                 {
                     image = program.GetImageInfo(ImageType.Backdrop, 0);
-                    if (image != null)
+                    if (image is not null)
                     {
                         try
                         {
@@ -460,7 +460,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var channel = _libraryManager.GetItemById(dto.ChannelId);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     info.ChannelId = channel.ExternalId;
                 }
@@ -470,7 +470,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var program = _libraryManager.GetItemById(dto.ProgramId);
 
-                if (program != null)
+                if (program is not null)
                 {
                     info.ProgramId = program.ExternalId;
                 }
@@ -480,7 +480,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var timer = await liveTv.GetSeriesTimer(dto.SeriesTimerId, cancellationToken).ConfigureAwait(false);
 
-                if (timer != null)
+                if (timer is not null)
                 {
                     info.SeriesTimerId = timer.ExternalId;
                 }
@@ -526,7 +526,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var channel = _libraryManager.GetItemById(dto.ChannelId);
 
-                if (channel != null)
+                if (channel is not null)
                 {
                     info.ChannelId = channel.ExternalId;
                 }
@@ -536,7 +536,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var program = _libraryManager.GetItemById(dto.ProgramId);
 
-                if (program != null)
+                if (program is not null)
                 {
                     info.ProgramId = program.ExternalId;
                 }
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
index 97c2e6e306..7afc7959c1 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -434,7 +434,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var item = _libraryManager.GetItemById(id) as LiveTvChannel;
 
-            if (item == null)
+            if (item is null)
             {
                 item = new LiveTvChannel
                 {
@@ -446,7 +446,7 @@ namespace Emby.Server.Implementations.LiveTv
                 isNew = true;
             }
 
-            if (channelInfo.Tags != null)
+            if (channelInfo.Tags is not null)
             {
                 if (!channelInfo.Tags.SequenceEqual(item.Tags, StringComparer.OrdinalIgnoreCase))
                 {
@@ -836,7 +836,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var seriesTimers = await GetSeriesTimersInternal(new SeriesTimerQuery(), cancellationToken).ConfigureAwait(false);
                 var seriesTimer = seriesTimers.Items.FirstOrDefault(i => string.Equals(_tvDtoService.GetInternalSeriesTimerId(i.Id).ToString("N", CultureInfo.InvariantCulture), query.SeriesTimerId, StringComparison.OrdinalIgnoreCase));
-                if (seriesTimer != null)
+                if (seriesTimer is not null)
                 {
                     internalQuery.ExternalSeriesId = seriesTimer.SeriesId;
 
@@ -948,7 +948,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var channel = _libraryManager.GetItemById(program.ChannelId);
 
-            if (channel == null)
+            if (channel is null)
             {
                 return score;
             }
@@ -989,7 +989,7 @@ namespace Emby.Server.Implementations.LiveTv
                 var timer = timerList.FirstOrDefault(i => string.Equals(i.ProgramId, externalProgramId, StringComparison.OrdinalIgnoreCase));
                 var foundSeriesTimer = false;
 
-                if (timer != null)
+                if (timer is not null)
                 {
                     if (timer.Status != RecordingStatus.Cancelled && timer.Status != RecordingStatus.Error)
                     {
@@ -1016,7 +1016,7 @@ namespace Emby.Server.Implementations.LiveTv
 
                 var seriesTimer = seriesTimerList.FirstOrDefault(i => string.Equals(i.SeriesId, externalSeriesId, StringComparison.OrdinalIgnoreCase));
 
-                if (seriesTimer != null)
+                if (seriesTimer is not null)
                 {
                     program.SeriesTimerId = _tvDtoService.GetInternalSeriesTimerId(seriesTimer.Id)
                         .ToString("N", CultureInfo.InvariantCulture);
@@ -1086,7 +1086,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var coreService = _services.OfType<EmbyTV.EmbyTV>().FirstOrDefault();
 
-            if (coreService != null)
+            if (coreService is not null)
             {
                 await coreService.RefreshSeriesTimers(cancellationToken).ConfigureAwait(false);
                 await coreService.RefreshTimers(cancellationToken).ConfigureAwait(false);
@@ -1280,7 +1280,7 @@ namespace Emby.Server.Implementations.LiveTv
                 {
                     var item = _libraryManager.GetItemById(itemId);
 
-                    if (item != null)
+                    if (item is not null)
                     {
                         _libraryManager.DeleteItem(
                             item,
@@ -1314,7 +1314,7 @@ namespace Emby.Server.Implementations.LiveTv
 
         private QueryResult<BaseItem> GetEmbyRecordings(RecordingQuery query, DtoOptions dtoOptions, User user)
         {
-            if (user == null)
+            if (user is null)
             {
                 return new QueryResult<BaseItem>();
             }
@@ -1377,7 +1377,7 @@ namespace Emby.Server.Implementations.LiveTv
                 limit = null;
 
                 // var allActivePaths = EmbyTV.EmbyTV.Current.GetAllActiveRecordings().Select(i => i.Path).ToArray();
-                // var items = allActivePaths.Select(i => _libraryManager.FindByPath(i, false)).Where(i => i != null).ToArray();
+                // var items = allActivePaths.Select(i => _libraryManager.FindByPath(i, false)).Where(i => i is not null).ToArray();
 
                 // return new QueryResult<BaseItem>
                 // {
@@ -1517,7 +1517,7 @@ namespace Emby.Server.Implementations.LiveTv
                 dto.CompletionPercentage = pct;
             }
 
-            if (channel != null)
+            if (channel is not null)
             {
                 dto.ChannelName = channel.Name;
 
@@ -1702,7 +1702,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var timer = await GetTimer(id, CancellationToken.None).ConfigureAwait(false);
 
-            if (timer == null)
+            if (timer is null)
             {
                 throw new ResourceNotFoundException(string.Format(CultureInfo.InvariantCulture, "Timer with Id {0} not found", id));
             }
@@ -1721,7 +1721,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var timer = await GetSeriesTimer(id, CancellationToken.None).ConfigureAwait(false);
 
-            if (timer == null)
+            if (timer is null)
             {
                 throw new ResourceNotFoundException(string.Format(CultureInfo.InvariantCulture, "SeriesTimer with Id {0} not found", id));
             }
@@ -1834,7 +1834,7 @@ namespace Emby.Server.Implementations.LiveTv
                     {
                         var internalChannelId = _tvDtoService.GetInternalChannelId(i.Item2.Name, i.Item1.ChannelId);
                         var channel = _libraryManager.GetItemById(internalChannelId);
-                        channelName = channel == null ? null : channel.Name;
+                        channelName = channel is null ? null : channel.Name;
                     }
 
                     return _tvDtoService.GetSeriesTimerInfoDto(i.Item1, i.Item2, channelName);
@@ -1887,7 +1887,7 @@ namespace Emby.Server.Implementations.LiveTv
                 {
                     var currentProgram = programs.FirstOrDefault(i => channel.Id.Equals(i.ChannelId));
 
-                    if (currentProgram != null)
+                    if (currentProgram is not null)
                     {
                         currentProgramsList.Add(currentProgram);
                     }
@@ -1913,7 +1913,7 @@ namespace Emby.Server.Implementations.LiveTv
             ILiveTvService service = null;
             ProgramInfo programInfo = null;
 
-            if (program != null)
+            if (program is not null)
             {
                 service = GetService(program);
 
@@ -2147,7 +2147,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var service = _services.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N", CultureInfo.InvariantCulture), parts[0], StringComparison.OrdinalIgnoreCase));
 
-            if (service == null)
+            if (service is null)
             {
                 throw new ArgumentException("Service not found.");
             }
@@ -2178,7 +2178,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var provider = _tunerHosts.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ResourceNotFoundException();
             }
@@ -2222,7 +2222,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var provider = _listingProviders.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ResourceNotFoundException(
                     string.Format(
@@ -2317,7 +2317,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var providerChannel = EmbyTV.EmbyTV.Current.GetEpgChannelFromTunerChannel(mappings, tunerChannel, providerChannels);
 
-            if (providerChannel != null)
+            if (providerChannel is not null)
             {
                 result.ProviderChannelName = providerChannel.Name;
                 result.ProviderChannelId = providerChannel.Id;
@@ -2334,7 +2334,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var provider = _listingProviders.FirstOrDefault(i => string.Equals(providerType, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                if (provider == null)
+                if (provider is null)
                 {
                     throw new ResourceNotFoundException();
                 }
@@ -2347,7 +2347,7 @@ namespace Emby.Server.Implementations.LiveTv
 
                 var provider = _listingProviders.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                if (provider == null)
+                if (provider is null)
                 {
                     throw new ResourceNotFoundException();
                 }
@@ -2390,7 +2390,7 @@ namespace Emby.Server.Implementations.LiveTv
                 .SelectMany(i => i.Locations)
                 .Distinct(StringComparer.OrdinalIgnoreCase)
                 .Select(i => _libraryManager.FindByPath(i, true))
-                .Where(i => i != null && i.IsVisibleStandalone(user))
+                .Where(i => i is not null && i.IsVisibleStandalone(user))
                 .SelectMany(i => _libraryManager.GetCollectionFolders(i))
                 .GroupBy(x => x.Id)
                 .Select(x => x.First())
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvMediaSourceProvider.cs b/Emby.Server.Implementations/LiveTv/LiveTvMediaSourceProvider.cs
index 4b7584af34..6a92fc5997 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvMediaSourceProvider.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvMediaSourceProvider.cs
@@ -42,7 +42,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var activeRecordingInfo = _liveTvManager.GetActiveRecordingInfo(item.Path);
 
-                if (string.IsNullOrEmpty(item.Path) || activeRecordingInfo != null)
+                if (string.IsNullOrEmpty(item.Path) || activeRecordingInfo is not null)
                 {
                     return GetMediaSourcesInternal(item, activeRecordingInfo, cancellationToken);
                 }
@@ -59,7 +59,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             try
             {
-                if (activeRecordingInfo != null)
+                if (activeRecordingInfo is not null)
                 {
                     sources = await EmbyTV.EmbyTV.Current.GetRecordingStreamMediaSources(activeRecordingInfo, cancellationToken)
                         .ConfigureAwait(false);
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
index 2b82f24623..2e1aef0726 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
@@ -147,7 +147,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
                         var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
                         var channelInfo = channels.FirstOrDefault(i => string.Equals(i.Id, channelId, StringComparison.OrdinalIgnoreCase));
 
-                        if (channelInfo != null)
+                        if (channelInfo is not null)
                         {
                             return await GetChannelStreamMediaSources(host, channelInfo, cancellationToken).ConfigureAwait(false);
                         }
@@ -187,7 +187,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
                     var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
                     var channelInfo = channels.FirstOrDefault(i => string.Equals(i.Id, channelId, StringComparison.OrdinalIgnoreCase));
 
-                    if (channelInfo != null)
+                    if (channelInfo is not null)
                     {
                         hostsWithChannel.Add(new Tuple<TunerHostInfo, ChannelInfo>(host, channelInfo));
                     }
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
index e0eaa8e585..5327b3d748 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
@@ -302,7 +302,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
             var hdHomerunChannelInfo = channels.FirstOrDefault() as HdHomerunChannelInfo;
 
-            if (hdHomerunChannelInfo == null || hdHomerunChannelInfo.IsLegacyTuner)
+            if (hdHomerunChannelInfo is null || hdHomerunChannelInfo.IsLegacyTuner)
             {
                 return await GetTunerInfosUdp(info, cancellationToken).ConfigureAwait(false);
             }
@@ -503,7 +503,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             {
                 var modelInfo = await GetModelInfo(tuner, false, cancellationToken).ConfigureAwait(false);
 
-                if (modelInfo != null && modelInfo.SupportsTranscoding)
+                if (modelInfo is not null && modelInfo.SupportsTranscoding)
                 {
                     if (tuner.AllowHWTranscoding)
                     {
@@ -560,7 +560,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
             var mediaSource = GetMediaSource(tunerHost, hdhrId, channel, profile);
 
-            if (hdhomerunChannel != null && hdhomerunChannel.IsLegacyTuner)
+            if (hdhomerunChannel is not null && hdhomerunChannel.IsLegacyTuner)
             {
                 return new HdHomerunUdpStream(
                     mediaSource,
@@ -674,7 +674,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
                             var info = await TryGetTunerHostInfo(deviceAddress, cancellationToken).ConfigureAwait(false);
 
-                            if (info != null)
+                            if (info is not null)
                             {
                                 list.Add(info);
                             }
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs
index e67b5846aa..81eb083f6f 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs
@@ -37,7 +37,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
         {
             using (var socket = _tcpClient)
             {
-                if (socket != null)
+                if (socket is not null)
                 {
                     _tcpClient = null;
 
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
index 2748794b38..3ae9e256b2 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
@@ -35,7 +35,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
             EnableStreamSharing = true;
             UniqueId = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture);
 
-            if (tuner != null)
+            if (tuner is not null)
             {
                 TunerHostId = tuner.Id;
             }
diff --git a/Emby.Server.Implementations/Localization/LocalizationManager.cs b/Emby.Server.Implementations/Localization/LocalizationManager.cs
index b771681266..8f15a155ed 100644
--- a/Emby.Server.Implementations/Localization/LocalizationManager.cs
+++ b/Emby.Server.Implementations/Localization/LocalizationManager.cs
@@ -329,14 +329,14 @@ namespace Emby.Server.Implementations.Localization
         {
             await using var stream = _assembly.GetManifestResourceStream(resourcePath);
             // If a Culture doesn't have a translation the stream will be null and it defaults to en-us further up the chain
-            if (stream == null)
+            if (stream is null)
             {
                 _logger.LogError("Missing translation/culture resource: {ResourcePath}", resourcePath);
                 return;
             }
 
             var dict = await JsonSerializer.DeserializeAsync<Dictionary<string, string>>(stream, _jsonOptions).ConfigureAwait(false);
-            if (dict == null)
+            if (dict is null)
             {
                 throw new InvalidOperationException($"Resource contains invalid data: '{stream}'");
             }
diff --git a/Emby.Server.Implementations/MediaEncoder/EncodingManager.cs b/Emby.Server.Implementations/MediaEncoder/EncodingManager.cs
index 6e1dc725d4..9fe51f083f 100644
--- a/Emby.Server.Implementations/MediaEncoder/EncodingManager.cs
+++ b/Emby.Server.Implementations/MediaEncoder/EncodingManager.cs
@@ -71,7 +71,7 @@ namespace Emby.Server.Implementations.MediaEncoder
             }
 
             var libraryOptions = _libraryManager.GetLibraryOptions(video);
-            if (libraryOptions != null)
+            if (libraryOptions is not null)
             {
                 if (!libraryOptions.EnableChapterImageExtraction)
                 {
diff --git a/Emby.Server.Implementations/Net/UdpSocket.cs b/Emby.Server.Implementations/Net/UdpSocket.cs
index c3994fc040..577b79283a 100644
--- a/Emby.Server.Implementations/Net/UdpSocket.cs
+++ b/Emby.Server.Implementations/Net/UdpSocket.cs
@@ -74,7 +74,7 @@ namespace Emby.Server.Implementations.Net
         private void OnReceiveSocketAsyncEventArgsCompleted(object sender, SocketAsyncEventArgs e)
         {
             var tcs = _currentReceiveTaskCompletionSource;
-            if (tcs != null)
+            if (tcs is not null)
             {
                 _currentReceiveTaskCompletionSource = null;
 
@@ -98,7 +98,7 @@ namespace Emby.Server.Implementations.Net
         private void OnSendSocketAsyncEventArgsCompleted(object sender, SocketAsyncEventArgs e)
         {
             var tcs = _currentSendTaskCompletionSource;
-            if (tcs != null)
+            if (tcs is not null)
             {
                 _currentSendTaskCompletionSource = null;
 
diff --git a/Emby.Server.Implementations/Playlists/PlaylistManager.cs b/Emby.Server.Implementations/Playlists/PlaylistManager.cs
index 9e7035cb31..271c0bc4df 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistManager.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistManager.cs
@@ -70,7 +70,7 @@ namespace Emby.Server.Implementations.Playlists
 
             var folderName = _fileSystem.GetValidFilename(name);
             var parentFolder = GetPlaylistsFolder(Guid.Empty);
-            if (parentFolder == null)
+            if (parentFolder is null)
             {
                 throw new ArgumentException(nameof(parentFolder));
             }
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Playlists
                 {
                     var item = _libraryManager.GetItemById(itemId);
 
-                    if (item == null)
+                    if (item is null)
                     {
                         throw new ArgumentException("No item exists with the supplied Id");
                     }
@@ -183,7 +183,7 @@ namespace Emby.Server.Implementations.Playlists
 
         private List<BaseItem> GetPlaylistItems(IEnumerable<Guid> itemIds, string playlistMediaType, User user, DtoOptions options)
         {
-            var items = itemIds.Select(i => _libraryManager.GetItemById(i)).Where(i => i != null);
+            var items = itemIds.Select(i => _libraryManager.GetItemById(i)).Where(i => i is not null);
 
             return Playlist.GetPlaylistItems(playlistMediaType, items, user, options);
         }
diff --git a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
index 8ec9f61616..e2f2e436f2 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
@@ -39,7 +39,7 @@ namespace Emby.Server.Implementations.Playlists
 
         protected override QueryResult<BaseItem> GetItemsInternal(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 query.Recursive = false;
                 return base.GetItemsInternal(query);
diff --git a/Emby.Server.Implementations/Plugins/PluginManager.cs b/Emby.Server.Implementations/Plugins/PluginManager.cs
index 3f7d46822e..39dc2135db 100644
--- a/Emby.Server.Implementations/Plugins/PluginManager.cs
+++ b/Emby.Server.Implementations/Plugins/PluginManager.cs
@@ -174,7 +174,7 @@ namespace Emby.Server.Implementations.Plugins
             foreach (var pluginServiceRegistrator in _appHost.GetExportTypes<IPluginServiceRegistrator>())
             {
                 var plugin = GetPluginByAssembly(pluginServiceRegistrator.Assembly);
-                if (plugin == null)
+                if (plugin is null)
                 {
                     _logger.LogError("Unable to find plugin in assembly {Assembly}", pluginServiceRegistrator.Assembly.FullName);
                     continue;
@@ -263,12 +263,12 @@ namespace Emby.Server.Implementations.Plugins
         {
             LocalPlugin? plugin;
 
-            if (version == null)
+            if (version is null)
             {
                 // If no version is given, return the current instance.
                 var plugins = _plugins.Where(p => p.Id.Equals(id)).ToList();
 
-                plugin = plugins.FirstOrDefault(p => p.Instance != null) ?? plugins.OrderByDescending(p => p.Version).FirstOrDefault();
+                plugin = plugins.FirstOrDefault(p => p.Instance is not null) ?? plugins.OrderByDescending(p => p.Version).FirstOrDefault();
             }
             else
             {
@@ -320,7 +320,7 @@ namespace Emby.Server.Implementations.Plugins
             ArgumentNullException.ThrowIfNull(assembly);
 
             var plugin = _plugins.FirstOrDefault(p => p.DllFiles.Contains(assembly.Location));
-            if (plugin == null)
+            if (plugin is null)
             {
                 // A plugin's assembly didn't cause this issue, so ignore it.
                 return;
@@ -442,7 +442,7 @@ namespace Emby.Server.Implementations.Plugins
                 _logger.LogDebug("Creating instance of {Type}", type);
                 // _appHost.ServiceProvider is already assigned when we create the plugins
                 var instance = (IPlugin)ActivatorUtilities.CreateInstance(_appHost.ServiceProvider!, type);
-                if (plugin == null)
+                if (plugin is null)
                 {
                     // Create a dummy record for the providers.
                     // TODO: remove this code once all provided have been released as separate plugins.
@@ -500,7 +500,7 @@ namespace Emby.Server.Implementations.Plugins
 #pragma warning restore CA1031 // Do not catch general exception types
             {
                 _logger.LogError(ex, "Error creating {Type}", type.FullName);
-                if (plugin != null)
+                if (plugin is not null)
                 {
                     if (ChangePluginState(plugin, PluginStatus.Malfunctioned))
                     {
@@ -523,7 +523,7 @@ namespace Emby.Server.Implementations.Plugins
 
             var predecessor = _plugins.OrderByDescending(p => p.Version)
                 .FirstOrDefault(p => p.Id.Equals(plugin.Id) && p.IsEnabledAndSupported && p.Version != plugin.Version);
-            if (predecessor != null)
+            if (predecessor is not null)
             {
                 return;
             }
@@ -577,7 +577,7 @@ namespace Emby.Server.Implementations.Plugins
                     _logger.LogError(ex, "Error deserializing {Json}.", Encoding.UTF8.GetString(data!));
                 }
 
-                if (manifest != null)
+                if (manifest is not null)
                 {
                     if (!Version.TryParse(manifest.TargetAbi, out var targetAbi))
                     {
@@ -711,7 +711,7 @@ namespace Emby.Server.Implementations.Plugins
                     && p.IsEnabledAndSupported
                     && p.Version != plugin.Version);
 
-            if (previousVersion == null)
+            if (previousVersion is null)
             {
                 // This value is memory only - so that the web will show restart required.
                 plugin.Manifest.Status = PluginStatus.Restart;
diff --git a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
index b370e06efa..ee9aa85699 100644
--- a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
@@ -128,7 +128,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
 
                 lock (_lastExecutionResultSyncLock)
                 {
-                    if (_lastExecutionResult == null && !_readFromFile)
+                    if (_lastExecutionResult is null && !_readFromFile)
                     {
                         if (File.Exists(path))
                         {
@@ -211,7 +211,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             get
             {
-                if (CurrentCancellationTokenSource != null)
+                if (CurrentCancellationTokenSource is not null)
                 {
                     return CurrentCancellationTokenSource.IsCancellationRequested
                                ? TaskState.Cancelling
@@ -240,7 +240,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                 ArgumentNullException.ThrowIfNull(value);
 
                 // Cleanup current triggers
-                if (_triggers != null)
+                if (_triggers is not null)
                 {
                     DisposeTriggers();
                 }
@@ -269,7 +269,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                 ArgumentNullException.ThrowIfNull(value);
 
                 // This null check is not great, but is needed to handle bad user input, or user mucking with the config file incorrectly
-                var triggerList = value.Where(i => i != null).ToArray();
+                var triggerList = value.Where(i => i is not null).ToArray();
 
                 SaveTriggers(triggerList);
 
@@ -369,7 +369,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         private async Task ExecuteInternal(TaskOptions options)
         {
             // Cancel the current execution, if any
-            if (CurrentCancellationTokenSource != null)
+            if (CurrentCancellationTokenSource is not null)
             {
                 throw new InvalidOperationException("Cannot execute a Task that is already running");
             }
@@ -391,7 +391,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
 
             try
             {
-                if (options != null && options.MaxRuntimeTicks.HasValue)
+                if (options is not null && options.MaxRuntimeTicks.HasValue)
                 {
                     CurrentCancellationTokenSource.CancelAfter(TimeSpan.FromTicks(options.MaxRuntimeTicks.Value));
                 }
@@ -507,7 +507,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         private Tuple<TaskTriggerInfo, ITaskTrigger>[] LoadTriggers()
         {
             // This null check is not great, but is needed to handle bad user input, or user mucking with the config file incorrectly
-            var settings = LoadTriggerSettings().Where(i => i != null).ToArray();
+            var settings = LoadTriggerSettings().Where(i => i is not null).ToArray();
 
             return settings.Select(i => new Tuple<TaskTriggerInfo, ITaskTrigger>(i, GetTrigger(i))).ToArray();
         }
@@ -583,7 +583,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
 
             result.Key = ScheduledTask.Key;
 
-            if (ex != null)
+            if (ex is not null)
             {
                 result.ErrorMessage = ex.Message;
                 result.LongErrorMessage = ex.StackTrace;
@@ -617,7 +617,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                 var startTime = CurrentExecutionStartTime;
 
                 var token = CurrentCancellationTokenSource;
-                if (token != null)
+                if (token is not null)
                 {
                     try
                     {
@@ -631,7 +631,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                 }
 
                 var task = _currentTask;
-                if (task != null)
+                if (task is not null)
                 {
                     try
                     {
@@ -653,7 +653,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                     }
                 }
 
-                if (token != null)
+                if (token is not null)
                 {
                     try
                     {
diff --git a/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs b/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
index 0431858fca..63f0beb105 100644
--- a/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
@@ -94,7 +94,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == typeof(T));
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in QueueScheduledTask.", typeof(T).Name);
             }
@@ -126,7 +126,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == typeof(T));
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in Execute.", typeof(T).Name);
             }
@@ -155,7 +155,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == task.GetType());
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in QueueScheduledTask.", task.GetType().Name);
             }
diff --git a/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs b/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
index da7c8732a8..abc203618d 100644
--- a/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
@@ -151,7 +151,7 @@ namespace Emby.Server.Implementations.ScheduledTasks.Tasks
                         previouslyFailedImages.Add(key);
 
                         var parentPath = Path.GetDirectoryName(failHistoryPath);
-                        if (parentPath != null)
+                        if (parentPath is not null)
                         {
                             Directory.CreateDirectory(parentPath);
                         }
diff --git a/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs b/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
index 3eb800199d..d65ac2e5ea 100644
--- a/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
@@ -50,7 +50,7 @@ namespace Emby.Server.Implementations.ScheduledTasks.Triggers
 
             DateTime triggerDate;
 
-            if (lastResult == null)
+            if (lastResult is null)
             {
                 // Task has never been completed before
                 triggerDate = DateTime.UtcNow.AddHours(1);
@@ -100,7 +100,7 @@ namespace Emby.Server.Implementations.ScheduledTasks.Triggers
         {
             DisposeTimer();
 
-            if (Triggered != null)
+            if (Triggered is not null)
             {
                 _lastStartDate = DateTime.UtcNow;
                 Triggered(this, EventArgs.Empty);
diff --git a/Emby.Server.Implementations/Session/SessionManager.cs b/Emby.Server.Implementations/Session/SessionManager.cs
index 0d1029882b..2add9be805 100644
--- a/Emby.Server.Implementations/Session/SessionManager.cs
+++ b/Emby.Server.Implementations/Session/SessionManager.cs
@@ -200,7 +200,7 @@ namespace Emby.Server.Implementations.Session
             {
                 var capabilities = _deviceManager.GetCapabilities(info.DeviceId);
 
-                if (capabilities != null)
+                if (capabilities is not null)
                 {
                     ReportCapabilities(info, capabilities, false);
                 }
@@ -238,7 +238,7 @@ namespace Emby.Server.Implementations.Session
         public void UpdateDeviceName(string sessionId, string reportedDeviceName)
         {
             var session = GetSession(sessionId);
-            if (session != null)
+            if (session is not null)
             {
                 session.DeviceName = reportedDeviceName;
             }
@@ -284,7 +284,7 @@ namespace Emby.Server.Implementations.Session
             var lastActivityDate = session.LastActivityDate;
             session.LastActivityDate = activityDate;
 
-            if (user != null)
+            if (user is not null)
             {
                 var userLastActivityDate = user.LastActivityDate ?? DateTime.MinValue;
 
@@ -351,7 +351,7 @@ namespace Emby.Server.Implementations.Session
             CheckDisposed();
             var session = GetSession(sessionId, false);
 
-            if (session != null)
+            if (session is not null)
             {
                 var key = GetSessionKey(session.Client, session.DeviceId);
 
@@ -377,11 +377,11 @@ namespace Emby.Server.Implementations.Session
                 info.MediaSourceId = info.ItemId.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (!info.ItemId.Equals(default) && info.Item == null && libraryItem != null)
+            if (!info.ItemId.Equals(default) && info.Item is null && libraryItem is not null)
             {
                 var current = session.NowPlayingItem;
 
-                if (current == null || !info.ItemId.Equals(current.Id))
+                if (current is null || !info.ItemId.Equals(current.Id))
                 {
                     var runtimeTicks = libraryItem.RunTimeTicks;
 
@@ -390,7 +390,7 @@ namespace Emby.Server.Implementations.Session
                     {
                         mediaSource = await GetMediaSource(libraryItem, info.MediaSourceId, info.LiveStreamId).ConfigureAwait(false);
 
-                        if (mediaSource != null)
+                        if (mediaSource is not null)
                         {
                             runtimeTicks = mediaSource.RunTimeTicks;
                         }
@@ -495,7 +495,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.UserId = user?.Id ?? Guid.Empty;
             sessionInfo.UserName = user?.Username;
-            sessionInfo.UserPrimaryImageTag = user?.ProfileImage == null ? null : GetImageCacheTag(user);
+            sessionInfo.UserPrimaryImageTag = user?.ProfileImage is null ? null : GetImageCacheTag(user);
             sessionInfo.RemoteEndPoint = remoteEndPoint;
             sessionInfo.Client = appName;
 
@@ -506,7 +506,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.ApplicationVersion = appVersion;
 
-            if (user == null)
+            if (user is null)
             {
                 sessionInfo.AdditionalUsers = Array.Empty<SessionUserInfo>();
             }
@@ -536,7 +536,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.UserId = user?.Id ?? Guid.Empty;
             sessionInfo.UserName = username;
-            sessionInfo.UserPrimaryImageTag = user?.ProfileImage == null ? null : GetImageCacheTag(user);
+            sessionInfo.UserPrimaryImageTag = user?.ProfileImage is null ? null : GetImageCacheTag(user);
             sessionInfo.RemoteEndPoint = remoteEndPoint;
 
             if (string.IsNullOrEmpty(deviceName))
@@ -570,7 +570,7 @@ namespace Emby.Server.Implementations.Session
 
             var user = _userManager.GetUserById(session.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new InvalidOperationException("User not found");
             }
@@ -579,7 +579,7 @@ namespace Emby.Server.Implementations.Session
 
             users.AddRange(session.AdditionalUsers
                 .Select(i => _userManager.GetUserById(i.UserId))
-                .Where(i => i != null));
+                .Where(i => i is not null));
 
             return users;
         }
@@ -591,7 +591,7 @@ namespace Emby.Server.Implementations.Session
 
         private void StopIdleCheckTimer()
         {
-            if (_idleTimer != null)
+            if (_idleTimer is not null)
             {
                 _idleTimer.Dispose();
                 _idleTimer = null;
@@ -600,7 +600,7 @@ namespace Emby.Server.Implementations.Session
 
         private async void CheckForIdlePlayback(object state)
         {
-            var playingSessions = Sessions.Where(i => i.NowPlayingItem != null)
+            var playingSessions = Sessions.Where(i => i.NowPlayingItem is not null)
                 .ToList();
 
             if (playingSessions.Count > 0)
@@ -618,7 +618,7 @@ namespace Emby.Server.Implementations.Session
                         await OnPlaybackStopped(new PlaybackStopInfo
                         {
                             Item = session.NowPlayingItem,
-                            ItemId = session.NowPlayingItem == null ? Guid.Empty : session.NowPlayingItem.Id,
+                            ItemId = session.NowPlayingItem is null ? Guid.Empty : session.NowPlayingItem.Id,
                             SessionId = session.Id,
                             MediaSourceId = session.PlayState?.MediaSourceId,
                             PositionTicks = session.PlayState?.PositionTicks
@@ -630,7 +630,7 @@ namespace Emby.Server.Implementations.Session
                     }
                 }
 
-                playingSessions = Sessions.Where(i => i.NowPlayingItem != null)
+                playingSessions = Sessions.Where(i => i.NowPlayingItem is not null)
                     .ToList();
             }
 
@@ -643,7 +643,7 @@ namespace Emby.Server.Implementations.Session
         private BaseItem GetNowPlayingItem(SessionInfo session, Guid itemId)
         {
             var item = session.FullNowPlayingItem;
-            if (item != null && item.Id.Equals(itemId))
+            if (item is not null && item.Id.Equals(itemId))
             {
                 return item;
             }
@@ -684,7 +684,7 @@ namespace Emby.Server.Implementations.Session
 
             var users = GetUsers(session);
 
-            if (libraryItem != null)
+            if (libraryItem is not null)
             {
                 foreach (var user in users)
                 {
@@ -777,7 +777,7 @@ namespace Emby.Server.Implementations.Session
             var users = GetUsers(session);
 
             // only update saved user data on actual check-ins, not automated ones
-            if (libraryItem != null && !isAutomated)
+            if (libraryItem is not null && !isAutomated)
             {
                 foreach (var user in users)
                 {
@@ -912,11 +912,11 @@ namespace Emby.Server.Implementations.Session
                 info.MediaSourceId = info.ItemId.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (!info.ItemId.Equals(default) && info.Item == null && libraryItem != null)
+            if (!info.ItemId.Equals(default) && info.Item is null && libraryItem is not null)
             {
                 var current = session.NowPlayingItem;
 
-                if (current == null || !info.ItemId.Equals(current.Id))
+                if (current is null || !info.ItemId.Equals(current.Id))
                 {
                     MediaSourceInfo mediaSource = null;
 
@@ -933,7 +933,7 @@ namespace Emby.Server.Implementations.Session
                 }
             }
 
-            if (info.Item != null)
+            if (info.Item is not null)
             {
                 var msString = info.PositionTicks.HasValue ? (info.PositionTicks.Value / 10000).ToString(CultureInfo.InvariantCulture) : "unknown";
 
@@ -945,7 +945,7 @@ namespace Emby.Server.Implementations.Session
                     msString);
             }
 
-            if (info.NowPlayingQueue != null)
+            if (info.NowPlayingQueue is not null)
             {
                 session.NowPlayingQueue = info.NowPlayingQueue;
             }
@@ -957,7 +957,7 @@ namespace Emby.Server.Implementations.Session
             var users = GetUsers(session);
             var playedToCompletion = false;
 
-            if (libraryItem != null)
+            if (libraryItem is not null)
             {
                 foreach (var user in users)
                 {
@@ -1037,7 +1037,7 @@ namespace Emby.Server.Implementations.Session
         private SessionInfo GetSession(string sessionId, bool throwOnMissing = true)
         {
             var session = Sessions.FirstOrDefault(i => string.Equals(i.Id, sessionId, StringComparison.Ordinal));
-            if (session == null && throwOnMissing)
+            if (session is null && throwOnMissing)
             {
                 throw new ResourceNotFoundException(
                     string.Format(CultureInfo.InvariantCulture, "Session {0} not found.", sessionId));
@@ -1051,7 +1051,7 @@ namespace Emby.Server.Implementations.Session
             // Accept either device id or session id
             var session = Sessions.FirstOrDefault(i => string.Equals(i.Id, sessionId, StringComparison.Ordinal));
 
-            if (session == null)
+            if (session is null)
             {
                 throw new ResourceNotFoundException(
                     string.Format(CultureInfo.InvariantCulture, "Session {0} not found.", sessionId));
@@ -1164,7 +1164,7 @@ namespace Emby.Server.Implementations.Session
 
             command.ItemIds = items.Select(i => i.Id).ToArray();
 
-            if (user != null)
+            if (user is not null)
             {
                 if (items.Any(i => i.GetPlayAccess(user) != PlayAccess.Full))
                 {
@@ -1173,13 +1173,13 @@ namespace Emby.Server.Implementations.Session
                 }
             }
 
-            if (user != null
+            if (user is not null
                 && command.ItemIds.Length == 1
                 && user.EnableNextEpisodeAutoPlay
                 && _libraryManager.GetItemById(command.ItemIds[0]) is Episode episode)
             {
                 var series = episode.Series;
-                if (series != null)
+                if (series is not null)
                 {
                     var episodes = series.GetEpisodes(
                             user,
@@ -1231,7 +1231,7 @@ namespace Emby.Server.Implementations.Session
         {
             var item = _libraryManager.GetItemById(id);
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogError("A non-existent item Id {0} was passed into TranslateItemForPlayback", id);
                 return Array.Empty<BaseItem>();
@@ -1284,7 +1284,7 @@ namespace Emby.Server.Implementations.Session
         {
             var item = _libraryManager.GetItemById(id);
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogError("A non-existent item Id {0} was passed into TranslateItemForInstantMix", id);
                 return new List<BaseItem>();
@@ -1429,7 +1429,7 @@ namespace Emby.Server.Implementations.Session
 
             var user = session.AdditionalUsers.FirstOrDefault(i => i.UserId.Equals(userId));
 
-            if (user != null)
+            if (user is not null)
             {
                 var list = session.AdditionalUsers.ToList();
                 list.Remove(user);
@@ -1480,7 +1480,7 @@ namespace Emby.Server.Implementations.Session
                     true).ConfigureAwait(false);
             }
 
-            if (user == null)
+            if (user is null)
             {
                 AuthenticationFailed?.Invoke(this, new GenericEventArgs<AuthenticationRequest>(request));
                 throw new AuthenticationException("Invalid username or password entered.");
@@ -1541,7 +1541,7 @@ namespace Emby.Server.Implementations.Session
 
             foreach (var auth in allExistingForDevice)
             {
-                if (existing == null || !string.Equals(auth.AccessToken, existing.AccessToken, StringComparison.Ordinal))
+                if (existing is null || !string.Equals(auth.AccessToken, existing.AccessToken, StringComparison.Ordinal))
                 {
                     try
                     {
@@ -1554,7 +1554,7 @@ namespace Emby.Server.Implementations.Session
                 }
             }
 
-            if (existing != null)
+            if (existing is not null)
             {
                 _logger.LogInformation("Reissuing access token: {Token}", existing.AccessToken);
                 return existing.AccessToken;
@@ -1677,7 +1677,7 @@ namespace Emby.Server.Implementations.Session
 
             var dtoOptions = _itemInfoDtoOptions;
 
-            if (_itemInfoDtoOptions == null)
+            if (_itemInfoDtoOptions is null)
             {
                 dtoOptions = new DtoOptions
                 {
@@ -1720,7 +1720,7 @@ namespace Emby.Server.Implementations.Session
 
             var info = _dtoService.GetBaseItemDto(item, dtoOptions);
 
-            if (mediaSource != null)
+            if (mediaSource is not null)
             {
                 info.MediaStreams = mediaSource.MediaStreams.ToArray();
             }
@@ -1761,7 +1761,7 @@ namespace Emby.Server.Implementations.Session
             var session = Sessions.FirstOrDefault(i =>
                 string.Equals(i.DeviceId, deviceId, StringComparison.OrdinalIgnoreCase));
 
-            if (session != null)
+            if (session is not null)
             {
                 session.TranscodingInfo = info;
             }
diff --git a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
index c654828b1e..aebb559073 100644
--- a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
+++ b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
@@ -94,7 +94,7 @@ namespace Emby.Server.Implementations.Session
         public async Task ProcessWebSocketConnectedAsync(IWebSocketConnection connection, HttpContext httpContext)
         {
             var session = await GetSession(httpContext, connection.RemoteEndPoint?.ToString()).ConfigureAwait(false);
-            if (session != null)
+            if (session is not null)
             {
                 EnsureController(session, connection);
                 await KeepAliveWebSocket(connection).ConfigureAwait(false);
@@ -202,7 +202,7 @@ namespace Emby.Server.Implementations.Session
         {
             lock (_keepAliveLock)
             {
-                if (_keepAliveCancellationToken == null)
+                if (_keepAliveCancellationToken is null)
                 {
                     _keepAliveCancellationToken = new CancellationTokenSource();
                     // Start KeepAlive watcher
@@ -221,7 +221,7 @@ namespace Emby.Server.Implementations.Session
         {
             lock (_keepAliveLock)
             {
-                if (_keepAliveCancellationToken != null)
+                if (_keepAliveCancellationToken is not null)
                 {
                     _keepAliveCancellationToken.Cancel();
                     _keepAliveCancellationToken.Dispose();
diff --git a/Emby.Server.Implementations/Session/WebSocketController.cs b/Emby.Server.Implementations/Session/WebSocketController.cs
index 1f3248f075..051fa5b3cf 100644
--- a/Emby.Server.Implementations/Session/WebSocketController.cs
+++ b/Emby.Server.Implementations/Session/WebSocketController.cs
@@ -73,7 +73,7 @@ namespace Emby.Server.Implementations.Session
                 .OrderByDescending(i => i.LastActivityDate)
                 .FirstOrDefault();
 
-            if (socket == null)
+            if (socket is null)
             {
                 return Task.CompletedTask;
             }
diff --git a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
index 2d21bd9c2a..964004eccb 100644
--- a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
+++ b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
@@ -31,9 +31,9 @@ namespace Emby.Server.Implementations.Sorting
             var episode1 = x as Episode;
             var episode2 = y as Episode;
 
-            if (episode1 == null)
+            if (episode1 is null)
             {
-                if (episode2 == null)
+                if (episode2 is null)
                 {
                     return 0;
                 }
@@ -41,7 +41,7 @@ namespace Emby.Server.Implementations.Sorting
                 return 1;
             }
 
-            if (episode2 == null)
+            if (episode2 is null)
             {
                 return -1;
             }
diff --git a/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs b/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
index ec818253be..453d817c76 100644
--- a/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
@@ -58,7 +58,7 @@ namespace Emby.Server.Implementations.Sorting
         {
             var userdata = UserDataRepository.GetUserData(User, x);
 
-            if (userdata != null && userdata.LastPlayedDate.HasValue)
+            if (userdata is not null && userdata.LastPlayedDate.HasValue)
             {
                 return userdata.LastPlayedDate.Value;
             }
diff --git a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
index 45c9044c52..16f1b79b3e 100644
--- a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
@@ -57,7 +57,7 @@ namespace Emby.Server.Implementations.Sorting
         {
             var userdata = UserDataRepository.GetUserData(User, x);
 
-            return userdata == null ? 0 : userdata.PlayCount;
+            return userdata is null ? 0 : userdata.PlayCount;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
index b217556ef3..db86b8002d 100644
--- a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private static DateTime GetDate(BaseItem? x)
         {
-            if (x == null)
+            if (x is null)
             {
                 return DateTime.MinValue;
             }
diff --git a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
index d2022df7a6..7fd1e024d0 100644
--- a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
+++ b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
@@ -33,7 +33,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private static int GetValue(BaseItem? x)
         {
-            if (x == null)
+            if (x is null)
             {
                 return 0;
             }
diff --git a/Emby.Server.Implementations/SyncPlay/Group.cs b/Emby.Server.Implementations/SyncPlay/Group.cs
index 52becfec6b..7d7ea58106 100644
--- a/Emby.Server.Implementations/SyncPlay/Group.cs
+++ b/Emby.Server.Implementations/SyncPlay/Group.cs
@@ -197,7 +197,7 @@ namespace Emby.Server.Implementations.SyncPlay
         private bool HasAccessToQueue(User user, IReadOnlyList<Guid> queue)
         {
             // Check if queue is empty.
-            if (queue == null || queue.Count == 0)
+            if (queue is null || queue.Count == 0)
             {
                 return true;
             }
@@ -217,7 +217,7 @@ namespace Emby.Server.Implementations.SyncPlay
         private bool AllUsersHaveAccessToQueue(IReadOnlyList<Guid> queue)
         {
             // Check if queue is empty.
-            if (queue == null || queue.Count == 0)
+            if (queue is null || queue.Count == 0)
             {
                 return true;
             }
@@ -251,7 +251,7 @@ namespace Emby.Server.Implementations.SyncPlay
             GroupName = request.GroupName;
             AddSession(session);
 
-            var sessionIsPlayingAnItem = session.FullNowPlayingItem != null;
+            var sessionIsPlayingAnItem = session.FullNowPlayingItem is not null;
 
             RestartCurrentItem();
 
diff --git a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
index 53e3b3577f..63c4a15564 100644
--- a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
+++ b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
@@ -102,12 +102,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void NewGroup(SessionInfo session, NewGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -138,12 +138,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void JoinGroup(SessionInfo session, JoinGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -155,7 +155,7 @@ namespace Emby.Server.Implementations.SyncPlay
             {
                 _groups.TryGetValue(request.GroupId, out Group group);
 
-                if (group == null)
+                if (group is null)
                 {
                     _logger.LogWarning("Session {SessionId} tried to join group {GroupId} that does not exist.", session.Id, request.GroupId);
 
@@ -204,12 +204,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void LeaveGroup(SessionInfo session, LeaveGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -257,12 +257,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public List<GroupInfoDto> ListGroups(SessionInfo session, ListGroupsRequest request)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -291,12 +291,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void HandleRequest(SessionInfo session, IGroupPlaybackRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
diff --git a/Emby.Server.Implementations/TV/TVSeriesManager.cs b/Emby.Server.Implementations/TV/TVSeriesManager.cs
index 5c9b9df153..967f90b55f 100644
--- a/Emby.Server.Implementations/TV/TVSeriesManager.cs
+++ b/Emby.Server.Implementations/TV/TVSeriesManager.cs
@@ -37,7 +37,7 @@ namespace Emby.Server.Implementations.TV
         {
             var user = _userManager.GetUserById(query.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User not found");
             }
@@ -62,7 +62,7 @@ namespace Emby.Server.Implementations.TV
             {
                 var parent = _libraryManager.GetItemById(query.ParentId.Value);
 
-                if (parent != null)
+                if (parent is not null)
                 {
                     parents = new[] { parent };
                 }
@@ -86,7 +86,7 @@ namespace Emby.Server.Implementations.TV
         {
             var user = _userManager.GetUserById(request.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User not found");
             }
@@ -168,7 +168,7 @@ namespace Emby.Server.Implementations.TV
                     return !anyFound && i.LastWatchedDate == DateTime.MinValue;
                 })
                 .Select(i => i.GetEpisodeFunction())
-                .Where(i => i != null);
+                .Where(i => i is not null);
         }
 
         private static string GetUniqueSeriesKey(Episode episode)
@@ -247,23 +247,23 @@ namespace Emby.Server.Implementations.TV
                         DtoOptions = dtoOptions
                     })
                     .Cast<Episode>()
-                    .Where(episode => episode.AirsBeforeSeasonNumber != null || episode.AirsAfterSeasonNumber != null)
+                    .Where(episode => episode.AirsBeforeSeasonNumber is not null || episode.AirsAfterSeasonNumber is not null)
                     .ToList();
 
-                    if (lastWatchedEpisode != null)
+                    if (lastWatchedEpisode is not null)
                     {
                         // Last watched episode is added, because there could be specials that aired before the last watched episode
                         consideredEpisodes.Add(lastWatchedEpisode);
                     }
 
-                    if (nextEpisode != null)
+                    if (nextEpisode is not null)
                     {
                         consideredEpisodes.Add(nextEpisode);
                     }
 
                     var sortedConsideredEpisodes = _libraryManager.Sort(consideredEpisodes, user, new[] { (ItemSortBy.AiredEpisodeOrder, SortOrder.Ascending) })
                         .Cast<Episode>();
-                    if (lastWatchedEpisode != null)
+                    if (lastWatchedEpisode is not null)
                     {
                         sortedConsideredEpisodes = sortedConsideredEpisodes.SkipWhile(episode => !episode.Id.Equals(lastWatchedEpisode.Id)).Skip(1);
                     }
@@ -271,7 +271,7 @@ namespace Emby.Server.Implementations.TV
                     nextEpisode = sortedConsideredEpisodes.FirstOrDefault();
                 }
 
-                if (nextEpisode != null)
+                if (nextEpisode is not null)
                 {
                     var userData = _userDataManager.GetUserData(user, nextEpisode);
 
@@ -284,7 +284,7 @@ namespace Emby.Server.Implementations.TV
                 return nextEpisode;
             }
 
-            if (lastWatchedEpisode != null)
+            if (lastWatchedEpisode is not null)
             {
                 var userData = _userDataManager.GetUserData(user, lastWatchedEpisode);
 
diff --git a/Emby.Server.Implementations/Updates/InstallationManager.cs b/Emby.Server.Implementations/Updates/InstallationManager.cs
index 550f0e0755..5e897833e0 100644
--- a/Emby.Server.Implementations/Updates/InstallationManager.cs
+++ b/Emby.Server.Implementations/Updates/InstallationManager.cs
@@ -102,7 +102,7 @@ namespace Emby.Server.Implementations.Updates
                 PackageInfo[]? packages = await _httpClientFactory.CreateClient(NamedClient.Default)
                         .GetFromJsonAsync<PackageInfo[]>(new Uri(manifest), _jsonSerializerOptions, cancellationToken).ConfigureAwait(false);
 
-                if (packages == null)
+                if (packages is null)
                 {
                     return Array.Empty<PackageInfo>();
                 }
@@ -168,7 +168,7 @@ namespace Emby.Server.Implementations.Updates
             var result = new List<PackageInfo>();
             foreach (RepositoryInfo repository in _config.Configuration.PluginRepositories)
             {
-                if (repository.Enabled && repository.Url != null)
+                if (repository.Enabled && repository.Url is not null)
                 {
                     // Where repositories have the same content, the details from the first is taken.
                     foreach (var package in await GetPackages(repository.Name ?? "Unnamed Repo", repository.Url, true, cancellationToken).ConfigureAwait(true))
@@ -181,7 +181,7 @@ namespace Emby.Server.Implementations.Updates
                             var version = package.Versions[i];
 
                             var plugin = _pluginManager.GetPlugin(package.Id, version.VersionNumber);
-                            if (plugin != null)
+                            if (plugin is not null)
                             {
                                 await _pluginManager.GenerateManifest(package, version.VersionNumber, plugin.Path, plugin.Manifest.Status).ConfigureAwait(false);
                             }
@@ -199,7 +199,7 @@ namespace Emby.Server.Implementations.Updates
                             continue;
                         }
 
-                        if (existing != null)
+                        if (existing is not null)
                         {
                             // Assumption is both lists are ordered, so slot these into the correct place.
                             MergeSortedList(existing.Versions, package.Versions);
@@ -222,7 +222,7 @@ namespace Emby.Server.Implementations.Updates
             Guid id = default,
             Version? specificVersion = null)
         {
-            if (name != null)
+            if (name is not null)
             {
                 availablePackages = availablePackages.Where(x => x.Name.Equals(name, StringComparison.OrdinalIgnoreCase));
             }
@@ -232,7 +232,7 @@ namespace Emby.Server.Implementations.Updates
                 availablePackages = availablePackages.Where(x => x.Id.Equals(id));
             }
 
-            if (specificVersion != null)
+            if (specificVersion is not null)
             {
                 availablePackages = availablePackages.Where(x => x.Versions.Any(y => y.VersionNumber.Equals(specificVersion)));
             }
@@ -251,7 +251,7 @@ namespace Emby.Server.Implementations.Updates
             var package = FilterPackages(availablePackages, name, id, specificVersion).FirstOrDefault();
 
             // Package not found in repository
-            if (package == null)
+            if (package is null)
             {
                 yield break;
             }
@@ -260,11 +260,11 @@ namespace Emby.Server.Implementations.Updates
             var availableVersions = package.Versions
                 .Where(x => string.IsNullOrEmpty(x.TargetAbi) || Version.Parse(x.TargetAbi) <= appVer);
 
-            if (specificVersion != null)
+            if (specificVersion is not null)
             {
                 availableVersions = availableVersions.Where(x => x.VersionNumber.Equals(specificVersion));
             }
-            else if (minVersion != null)
+            else if (minVersion is not null)
             {
                 availableVersions = availableVersions.Where(x => x.VersionNumber >= minVersion);
             }
@@ -370,7 +370,7 @@ namespace Emby.Server.Implementations.Updates
         /// <param name="plugin">The <see cref="LocalPlugin"/> to uninstall.</param>
         public void UninstallPlugin(LocalPlugin plugin)
         {
-            if (plugin == null)
+            if (plugin is null)
             {
                 return;
             }
@@ -495,7 +495,7 @@ namespace Emby.Server.Implementations.Updates
                 var compatibleVersions = GetCompatibleVersions(pluginCatalog, plugin.Name, plugin.Id, minVersion: plugin.Version);
                 var version = compatibleVersions.FirstOrDefault(y => y.Version > plugin.Version);
 
-                if (version != null && CompletedInstallations.All(x => !x.Id.Equals(version.Id)))
+                if (version is not null && CompletedInstallations.All(x => !x.Id.Equals(version.Id)))
                 {
                     yield return version;
                 }
@@ -565,9 +565,9 @@ namespace Emby.Server.Implementations.Updates
                   ?? _pluginManager.Plugins.FirstOrDefault(p => p.Name.Equals(package.Name, StringComparison.OrdinalIgnoreCase) && p.Version.Equals(package.Version));
 
             await PerformPackageInstallation(package, plugin?.Manifest.Status ?? PluginStatus.Active, cancellationToken).ConfigureAwait(false);
-            _logger.LogInformation("Plugin {Action}: {PluginName} {PluginVersion}", plugin == null ? "installed" : "updated", package.Name, package.Version);
+            _logger.LogInformation("Plugin {Action}: {PluginName} {PluginVersion}", plugin is null ? "installed" : "updated", package.Name, package.Version);
 
-            return plugin != null;
+            return plugin is not null;
         }
     }
 }
diff --git a/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs b/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
index 88af08dd33..d4b1ffb060 100644
--- a/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
+++ b/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
@@ -32,7 +32,7 @@ namespace Jellyfin.Api.Auth.AnonymousLanAccessPolicy
             var ip = _httpContextAccessor.HttpContext?.Connection.RemoteIpAddress;
 
             // Loopback will be on LAN, so we can accept null.
-            if (ip == null || _networkManager.IsInLocalNetwork(ip))
+            if (ip is null || _networkManager.IsInLocalNetwork(ip))
             {
                 context.Succeed(requirement);
             }
diff --git a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
index 92ee1dd59a..8e5e66d64a 100644
--- a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
+++ b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
@@ -67,7 +67,7 @@ namespace Jellyfin.Api.Auth
 
             // Ensure userId links to a valid user.
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return false;
             }
@@ -78,7 +78,7 @@ namespace Jellyfin.Api.Auth
                 return false;
             }
 
-            var isInLocalNetwork = _httpContextAccessor.HttpContext != null
+            var isInLocalNetwork = _httpContextAccessor.HttpContext is not null
                 && _networkManager.IsInLocalNetwork(_httpContextAccessor.HttpContext.GetNormalizedRemoteIp());
 
             // User cannot access remotely and user is remote
diff --git a/Jellyfin.Api/Controllers/ArtistsController.cs b/Jellyfin.Api/Controllers/ArtistsController.cs
index c059cb198a..c8ac2ed526 100644
--- a/Jellyfin.Api/Controllers/ArtistsController.cs
+++ b/Jellyfin.Api/Controllers/ArtistsController.cs
@@ -183,7 +183,7 @@ namespace Jellyfin.Api.Controllers
                     {
                         return null;
                     }
-                }).Where(i => i != null).Select(i => i!.Id).ToArray();
+                }).Where(i => i is not null).Select(i => i!.Id).ToArray();
             }
 
             foreach (var filter in filters)
@@ -386,7 +386,7 @@ namespace Jellyfin.Api.Controllers
                     {
                         return null;
                     }
-                }).Where(i => i != null).Select(i => i!.Id).ToArray();
+                }).Where(i => i is not null).Select(i => i!.Id).ToArray();
             }
 
             foreach (var filter in filters)
diff --git a/Jellyfin.Api/Controllers/ConfigurationController.cs b/Jellyfin.Api/Controllers/ConfigurationController.cs
index bbe1633120..a00ac1b0af 100644
--- a/Jellyfin.Api/Controllers/ConfigurationController.cs
+++ b/Jellyfin.Api/Controllers/ConfigurationController.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Controllers
             var configurationType = _configurationManager.GetConfigurationType(key);
             var deserializedConfiguration = configuration.Deserialize(configurationType, _serializerOptions);
 
-            if (deserializedConfiguration == null)
+            if (deserializedConfiguration is null)
             {
                 throw new ArgumentException("Body doesn't contain a valid configuration");
             }
diff --git a/Jellyfin.Api/Controllers/DashboardController.cs b/Jellyfin.Api/Controllers/DashboardController.cs
index c8411f44ba..3894e6c5fc 100644
--- a/Jellyfin.Api/Controllers/DashboardController.cs
+++ b/Jellyfin.Api/Controllers/DashboardController.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetDashboardConfigurationPage([FromQuery] string? name)
         {
             var altPage = GetPluginPages().FirstOrDefault(p => string.Equals(p.Item1.Name, name, StringComparison.OrdinalIgnoreCase));
-            if (altPage == null)
+            if (altPage is null)
             {
                 return NotFound();
             }
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Controllers
             IPlugin plugin = altPage.Item2;
             string resourcePath = altPage.Item1.EmbeddedResourcePath;
             Stream? stream = plugin.GetType().Assembly.GetManifestResourceStream(resourcePath);
-            if (stream == null)
+            if (stream is null)
             {
                 _logger.LogError("Failed to get resource {Resource} from plugin {Plugin}", resourcePath, plugin.Name);
                 return NotFound();
diff --git a/Jellyfin.Api/Controllers/DevicesController.cs b/Jellyfin.Api/Controllers/DevicesController.cs
index 8292cf83b5..aad60cf5cc 100644
--- a/Jellyfin.Api/Controllers/DevicesController.cs
+++ b/Jellyfin.Api/Controllers/DevicesController.cs
@@ -64,7 +64,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<DeviceInfo>> GetDeviceInfo([FromQuery, Required] string id)
         {
             var deviceInfo = await _deviceManager.GetDevice(id).ConfigureAwait(false);
-            if (deviceInfo == null)
+            if (deviceInfo is null)
             {
                 return NotFound();
             }
@@ -85,7 +85,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<DeviceOptions>> GetDeviceOptions([FromQuery, Required] string id)
         {
             var deviceInfo = await _deviceManager.GetDeviceOptions(id).ConfigureAwait(false);
-            if (deviceInfo == null)
+            if (deviceInfo is null)
             {
                 return NotFound();
             }
@@ -123,7 +123,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> DeleteDevice([FromQuery, Required] string id)
         {
             var existingDevice = await _deviceManager.GetDevice(id).ConfigureAwait(false);
-            if (existingDevice == null)
+            if (existingDevice is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DlnaController.cs b/Jellyfin.Api/Controllers/DlnaController.cs
index 35c3a3d922..07e0590a10 100644
--- a/Jellyfin.Api/Controllers/DlnaController.cs
+++ b/Jellyfin.Api/Controllers/DlnaController.cs
@@ -63,7 +63,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<DeviceProfile> GetProfile([FromRoute, Required] string profileId)
         {
             var profile = _dlnaManager.GetProfile(profileId);
-            if (profile == null)
+            if (profile is null)
             {
                 return NotFound();
             }
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult DeleteProfile([FromRoute, Required] string profileId)
         {
             var existingDeviceProfile = _dlnaManager.GetProfile(profileId);
-            if (existingDeviceProfile == null)
+            if (existingDeviceProfile is null)
             {
                 return NotFound();
             }
@@ -121,7 +121,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UpdateProfile([FromRoute, Required] string profileId, [FromBody] DeviceProfile deviceProfile)
         {
             var existingDeviceProfile = _dlnaManager.GetProfile(profileId);
-            if (existingDeviceProfile == null)
+            if (existingDeviceProfile is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DlnaServerController.cs b/Jellyfin.Api/Controllers/DlnaServerController.cs
index 8859d60207..96c492b3ec 100644
--- a/Jellyfin.Api/Controllers/DlnaServerController.cs
+++ b/Jellyfin.Api/Controllers/DlnaServerController.cs
@@ -274,7 +274,7 @@ namespace Jellyfin.Api.Controllers
         private ActionResult GetIconInternal(string fileName)
         {
             var icon = _dlnaManager.GetIcon(fileName);
-            if (icon == null)
+            if (icon is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index 0f4d3c1ebc..af43bb578e 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -341,7 +341,7 @@ namespace Jellyfin.Api.Controllers
 
             job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
 
-            if (job != null)
+            if (job is not null)
             {
                 _transcodingJobHelper.OnTranscodeEndRequest(job);
             }
@@ -1482,7 +1482,7 @@ namespace Jellyfin.Api.Controllers
                         startTranscoding = true;
                         segmentId = 0;
                     }
-                    else if (currentTranscodingIndex == null)
+                    else if (currentTranscodingIndex is null)
                     {
                         _logger.LogDebug("Starting transcoding because currentTranscodingIndex=null");
                         startTranscoding = true;
@@ -1533,7 +1533,7 @@ namespace Jellyfin.Api.Controllers
                     else
                     {
                         job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
-                        if (job?.TranscodingThrottler != null)
+                        if (job?.TranscodingThrottler is not null)
                         {
                             await job.TranscodingThrottler.UnpauseTranscoding().ConfigureAwait(false);
                         }
@@ -1665,7 +1665,7 @@ namespace Jellyfin.Api.Controllers
         /// <returns>The command line arguments for audio transcoding.</returns>
         private string GetAudioArguments(StreamState state)
         {
-            if (state.AudioStream == null)
+            if (state.AudioStream is null)
             {
                 return string.Empty;
             }
@@ -1762,7 +1762,7 @@ namespace Jellyfin.Api.Controllers
         /// <returns>The command line arguments for video transcoding.</returns>
         private string GetVideoArguments(StreamState state, int startNumber, bool isEventPlaylist)
         {
-            if (state.VideoStream == null)
+            if (state.VideoStream is null)
             {
                 return string.Empty;
             }
@@ -1806,7 +1806,7 @@ namespace Jellyfin.Api.Controllers
             if (EncodingHelper.IsCopyCodec(codec))
             {
                 // If h264_mp4toannexb is ever added, do not use it for live tv.
-                if (state.VideoStream != null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
+                if (state.VideoStream is not null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
                 {
                     string bitStreamArgs = EncodingHelper.GetBitStreamArgs(state.VideoStream);
                     if (!string.IsNullOrEmpty(bitStreamArgs))
@@ -1837,7 +1837,7 @@ namespace Jellyfin.Api.Controllers
 
                 // -start_at_zero is necessary to use with -ss when seeking,
                 // otherwise the target position cannot be determined.
-                if (state.SubtitleStream != null)
+                if (state.SubtitleStream is not null)
                 {
                     // Disable start_at_zero for external graphical subs
                     if (!(state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream))
@@ -1883,7 +1883,7 @@ namespace Jellyfin.Api.Controllers
             var segmentExists = System.IO.File.Exists(segmentPath);
             if (segmentExists)
             {
-                if (transcodingJob != null && transcodingJob.HasExited)
+                if (transcodingJob is not null && transcodingJob.HasExited)
                 {
                     // Transcoding job is over, so assume all existing files are ready
                     _logger.LogDebug("serving up {0} as transcode is over", segmentPath);
@@ -1901,7 +1901,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var nextSegmentPath = GetSegmentPath(state, playlistPath, segmentIndex + 1);
-            if (transcodingJob != null)
+            if (transcodingJob is not null)
             {
                 while (!cancellationToken.IsCancellationRequested && !transcodingJob.HasExited)
                 {
@@ -1953,7 +1953,7 @@ namespace Jellyfin.Api.Controllers
             Response.OnCompleted(() =>
             {
                 _logger.LogDebug("Finished serving {SegmentPath}", segmentPath);
-                if (transcodingJob != null)
+                if (transcodingJob is not null)
                 {
                     transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks);
                     _transcodingJobHelper.OnTranscodeEndRequest(transcodingJob);
@@ -1969,14 +1969,14 @@ namespace Jellyfin.Api.Controllers
         {
             var job = _transcodingJobHelper.GetTranscodingJob(playlist, TranscodingJobType);
 
-            if (job == null || job.HasExited)
+            if (job is null || job.HasExited)
             {
                 return null;
             }
 
             var file = GetLastTranscodingFile(playlist, segmentExtension, _fileSystem);
 
-            if (file == null)
+            if (file is null)
             {
                 return null;
             }
@@ -2011,7 +2011,7 @@ namespace Jellyfin.Api.Controllers
         {
             var file = GetLastTranscodingFile(playlistPath, segmentExtension, _fileSystem);
 
-            if (file != null)
+            if (file is not null)
             {
                 DeleteFile(file.FullName, retryCount);
             }
diff --git a/Jellyfin.Api/Controllers/EnvironmentController.cs b/Jellyfin.Api/Controllers/EnvironmentController.cs
index b0b4b5af51..6c78a79875 100644
--- a/Jellyfin.Api/Controllers/EnvironmentController.cs
+++ b/Jellyfin.Api/Controllers/EnvironmentController.cs
@@ -104,7 +104,7 @@ namespace Jellyfin.Api.Controllers
 
                 if (validatePathDto.ValidateWritable)
                 {
-                    if (validatePathDto.Path == null)
+                    if (validatePathDto.Path is null)
                     {
                         throw new ResourceNotFoundException(nameof(validatePathDto.Path));
                     }
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 11808b1b82..b6780ee200 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -182,7 +182,7 @@ namespace Jellyfin.Api.Controllers
 
             if ((recursive ?? true) || parentItem is UserView || parentItem is ICollectionFolder)
             {
-                genreQuery.AncestorIds = parentItem == null ? Array.Empty<Guid>() : new[] { parentItem.Id };
+                genreQuery.AncestorIds = parentItem is null ? Array.Empty<Guid>() : new[] { parentItem.Id };
             }
             else
             {
diff --git a/Jellyfin.Api/Controllers/HlsSegmentController.cs b/Jellyfin.Api/Controllers/HlsSegmentController.cs
index 78634f0bfc..50fee233a8 100644
--- a/Jellyfin.Api/Controllers/HlsSegmentController.cs
+++ b/Jellyfin.Api/Controllers/HlsSegmentController.cs
@@ -167,7 +167,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            return playlistPath == null
+            return playlistPath is null
                 ? NotFound("Hls segment not found.")
                 : GetFileResult(file, playlistPath);
         }
@@ -178,7 +178,7 @@ namespace Jellyfin.Api.Controllers
 
             Response.OnCompleted(() =>
             {
-                if (transcodingJob != null)
+                if (transcodingJob is not null)
                 {
                     _transcodingJobHelper.OnTranscodeEndRequest(transcodingJob);
                 }
diff --git a/Jellyfin.Api/Controllers/ImageByNameController.cs b/Jellyfin.Api/Controllers/ImageByNameController.cs
index 89bbf22c96..c54851b96e 100644
--- a/Jellyfin.Api/Controllers/ImageByNameController.cs
+++ b/Jellyfin.Api/Controllers/ImageByNameController.cs
@@ -77,7 +77,7 @@ namespace Jellyfin.Api.Controllers
                 .Select(i => Path.GetFullPath(Path.Combine(_applicationPaths.GeneralPath, name, filename + i)))
                 .FirstOrDefault(System.IO.File.Exists);
 
-            if (path == null)
+            if (path is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ImageController.cs b/Jellyfin.Api/Controllers/ImageController.cs
index f092bd8820..260b9536e3 100644
--- a/Jellyfin.Api/Controllers/ImageController.cs
+++ b/Jellyfin.Api/Controllers/ImageController.cs
@@ -110,7 +110,7 @@ namespace Jellyfin.Api.Controllers
             // Handle image/png; charset=utf-8
             var mimeType = Request.ContentType?.Split(';').FirstOrDefault();
             var userDataPath = Path.Combine(_serverConfigurationManager.ApplicationPaths.UserConfigurationDirectoryPath, user.Username);
-            if (user.ProfileImage != null)
+            if (user.ProfileImage is not null)
             {
                 await _userManager.ClearProfileImageAsync(user).ConfigureAwait(false);
             }
@@ -157,7 +157,7 @@ namespace Jellyfin.Api.Controllers
             // Handle image/png; charset=utf-8
             var mimeType = Request.ContentType?.Split(';').FirstOrDefault();
             var userDataPath = Path.Combine(_serverConfigurationManager.ApplicationPaths.UserConfigurationDirectoryPath, user.Username);
-            if (user.ProfileImage != null)
+            if (user.ProfileImage is not null)
             {
                 await _userManager.ClearProfileImageAsync(user).ConfigureAwait(false);
             }
@@ -198,7 +198,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NoContent();
             }
@@ -242,7 +242,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NoContent();
             }
@@ -279,7 +279,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -307,7 +307,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -335,7 +335,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] ImageType imageType)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -371,7 +371,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -407,7 +407,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, Required] int newIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -430,7 +430,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<IEnumerable<ImageInfo>>> GetItemImageInfos([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -452,7 +452,7 @@ namespace Jellyfin.Api.Controllers
                 {
                     var info = GetImageInfo(item, image, null);
 
-                    if (info != null)
+                    if (info is not null)
                     {
                         list.Add(info);
                     }
@@ -470,7 +470,7 @@ namespace Jellyfin.Api.Controllers
                 {
                     var info = GetImageInfo(item, image, index);
 
-                    if (info != null)
+                    if (info is not null)
                     {
                         list.Add(info);
                     }
@@ -537,7 +537,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -620,7 +620,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -703,7 +703,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -786,7 +786,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] int imageIndex)
         {
             var item = _libraryManager.GetArtist(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -869,7 +869,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -952,7 +952,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1035,7 +1035,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetMusicGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1118,7 +1118,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetMusicGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1201,7 +1201,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1284,7 +1284,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1367,7 +1367,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetStudio(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1450,7 +1450,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetStudio(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1533,7 +1533,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NotFound();
             }
@@ -1634,7 +1634,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NotFound();
             }
@@ -1944,10 +1944,10 @@ namespace Jellyfin.Api.Controllers
                 unplayedCount = null;
             }
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 imageInfo = item?.GetImageInfo(imageType, imageIndex ?? 0);
-                if (imageInfo == null)
+                if (imageInfo is null)
                 {
                     return NotFound(string.Format(NumberFormatInfo.InvariantInfo, "{0} does not have an image of type {1}", item?.Name, imageType));
                 }
@@ -1968,7 +1968,7 @@ namespace Jellyfin.Api.Controllers
                 { "realTimeInfo.dlna.org", "DLNA.ORG_TLAG=*" }
             };
 
-            if (!imageInfo.IsLocalFile && item != null)
+            if (!imageInfo.IsLocalFile && item is not null)
             {
                 imageInfo = await _libraryManager.ConvertImageToLocal(item, imageInfo, imageIndex ?? 0).ConfigureAwait(false);
             }
diff --git a/Jellyfin.Api/Controllers/ItemLookupController.cs b/Jellyfin.Api/Controllers/ItemLookupController.cs
index c49f856169..34893d682d 100644
--- a/Jellyfin.Api/Controllers/ItemLookupController.cs
+++ b/Jellyfin.Api/Controllers/ItemLookupController.cs
@@ -65,7 +65,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<ExternalIdInfo>> GetExternalIdInfos([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ItemRefreshController.cs b/Jellyfin.Api/Controllers/ItemRefreshController.cs
index 9340737b50..0dc3fbd05a 100644
--- a/Jellyfin.Api/Controllers/ItemRefreshController.cs
+++ b/Jellyfin.Api/Controllers/ItemRefreshController.cs
@@ -61,7 +61,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool replaceAllImages = false)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ItemUpdateController.cs b/Jellyfin.Api/Controllers/ItemUpdateController.cs
index fd137f98f1..af3d779f56 100644
--- a/Jellyfin.Api/Controllers/ItemUpdateController.cs
+++ b/Jellyfin.Api/Controllers/ItemUpdateController.cs
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> UpdateItem([FromRoute, Required] Guid itemId, [FromBody, Required] BaseItemDto request)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -80,13 +80,13 @@ namespace Jellyfin.Api.Controllers
             var isLockedChanged = item.IsLocked != newLockData;
 
             var series = item as Series;
-            var displayOrderChanged = series != null && !string.Equals(
+            var displayOrderChanged = series is not null && !string.Equals(
                 series.DisplayOrder ?? string.Empty,
                 request.DisplayOrder ?? string.Empty,
                 StringComparison.OrdinalIgnoreCase);
 
             // Do this first so that metadata savers can pull the updates from the database.
-            if (request.People != null)
+            if (request.People is not null)
             {
                 _libraryManager.UpdatePeople(
                     item,
@@ -198,7 +198,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UpdateItemContentType([FromRoute, Required] Guid itemId, [FromQuery] string? contentType)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -248,12 +248,12 @@ namespace Jellyfin.Api.Controllers
 
             item.Tags = request.Tags;
 
-            if (request.Taglines != null)
+            if (request.Taglines is not null)
             {
                 item.Tagline = request.Taglines.FirstOrDefault();
             }
 
-            if (request.Studios != null)
+            if (request.Studios is not null)
             {
                 item.Studios = request.Studios.Select(x => x.Name).ToArray();
             }
@@ -269,7 +269,7 @@ namespace Jellyfin.Api.Controllers
             item.OfficialRating = string.IsNullOrWhiteSpace(request.OfficialRating) ? null : request.OfficialRating;
             item.CustomRating = request.CustomRating;
 
-            if (request.ProductionLocations != null)
+            if (request.ProductionLocations is not null)
             {
                 item.ProductionLocations = request.ProductionLocations;
             }
@@ -289,7 +289,7 @@ namespace Jellyfin.Api.Controllers
 
             item.IsLocked = request.LockData ?? false;
 
-            if (request.LockedFields != null)
+            if (request.LockedFields is not null)
             {
                 item.LockedFields = request.LockedFields;
             }
@@ -315,7 +315,7 @@ namespace Jellyfin.Api.Controllers
                 video.Video3DFormat = request.Video3DFormat;
             }
 
-            if (request.AlbumArtists != null)
+            if (request.AlbumArtists is not null)
             {
                 if (item is IHasAlbumArtist hasAlbumArtists)
                 {
@@ -326,7 +326,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            if (request.ArtistItems != null)
+            if (request.ArtistItems is not null)
             {
                 if (item is IHasArtist hasArtists)
                 {
@@ -349,7 +349,7 @@ namespace Jellyfin.Api.Controllers
                 {
                     series.Status = GetSeriesStatus(request);
 
-                    if (request.AirDays != null)
+                    if (request.AirDays is not null)
                     {
                         series.AirDays = request.AirDays;
                         series.AirTime = request.AirTime;
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index 3ee5b8d737..717ddc32b3 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -447,7 +447,7 @@ namespace Jellyfin.Api.Controllers
                         {
                             return null;
                         }
-                    }).Where(i => i != null).Select(i => i!.Id).ToArray();
+                    }).Where(i => i is not null).Select(i => i!.Id).ToArray();
                 }
 
                 // ExcludeArtistIds
@@ -483,7 +483,7 @@ namespace Jellyfin.Api.Controllers
                         {
                             return null;
                         }
-                    }).Where(i => i != null).Select(i => i!.Id).ToArray();
+                    }).Where(i => i is not null).Select(i => i!.Id).ToArray();
                 }
 
                 // Apply default sorting if none requested
@@ -837,7 +837,7 @@ namespace Jellyfin.Api.Controllers
             if (excludeActiveSessions)
             {
                 excludeItemIds = _sessionManager.Sessions
-                    .Where(s => s.UserId.Equals(userId) && s.NowPlayingItem != null)
+                    .Where(s => s.UserId.Equals(userId) && s.NowPlayingItem is not null)
                     .Select(s => s.NowPlayingItem.Id)
                     .ToArray();
             }
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index 7d5cfc7ae5..ab20208302 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -104,7 +104,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetFile([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -154,7 +154,7 @@ namespace Jellyfin.Api.Controllers
                     : _libraryManager.GetUserRootFolder())
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found.");
             }
@@ -171,7 +171,7 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 var parent = item.GetParent();
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
@@ -220,7 +220,7 @@ namespace Jellyfin.Api.Controllers
                     : _libraryManager.GetUserRootFolder())
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found.");
             }
@@ -237,7 +237,7 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 var parent = item.GetParent();
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
@@ -435,7 +435,7 @@ namespace Jellyfin.Api.Controllers
         {
             var item = _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found");
             }
@@ -449,9 +449,9 @@ namespace Jellyfin.Api.Controllers
             var dtoOptions = new DtoOptions().AddClientFields(User);
             BaseItem? parent = item.GetParent();
 
-            while (parent != null)
+            while (parent is not null)
             {
-                if (user != null)
+                if (user is not null)
                 {
                     parent = TranslateParentItem(parent, user);
                 }
@@ -610,14 +610,14 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> GetDownload([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
 
             var user = _userManager.GetUserById(User.GetUserId());
 
-            if (user != null)
+            if (user is not null)
             {
                 if (!item.CanDownload(user))
                 {
@@ -632,7 +632,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            if (user != null)
+            if (user is not null)
             {
                 await LogDownloadAsync(item, user).ConfigureAwait(false);
             }
@@ -686,8 +686,8 @@ namespace Jellyfin.Api.Controllers
                 .AddClientFields(User);
 
             var program = item as IHasProgramAttributes;
-            bool? isMovie = item is Movie || (program != null && program.IsMovie) || item is Trailer;
-            bool? isSeries = item is Series || (program != null && program.IsSeries);
+            bool? isMovie = item is Movie || (program is not null && program.IsMovie) || item is Trailer;
+            bool? isSeries = item is Series || (program is not null && program.IsSeries);
 
             var includeItemTypes = new List<BaseItemKind>();
             if (isMovie.Value)
diff --git a/Jellyfin.Api/Controllers/LibraryStructureController.cs b/Jellyfin.Api/Controllers/LibraryStructureController.cs
index ec1170411c..1c23940556 100644
--- a/Jellyfin.Api/Controllers/LibraryStructureController.cs
+++ b/Jellyfin.Api/Controllers/LibraryStructureController.cs
@@ -82,7 +82,7 @@ namespace Jellyfin.Api.Controllers
         {
             var libraryOptions = libraryOptionsDto?.LibraryOptions ?? new LibraryOptions();
 
-            if (paths != null && paths.Length > 0)
+            if (paths is not null && paths.Length > 0)
             {
                 libraryOptions.PathInfos = paths.Select(i => new MediaPathInfo(i)).ToArray();
             }
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 394df0f58b..94710d78f2 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -763,7 +763,7 @@ namespace Jellyfin.Api.Controllers
             await AssertUserCanManageLiveTv().ConfigureAwait(false);
 
             var item = _libraryManager.GetItemById(recordingId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -840,7 +840,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<SeriesTimerInfoDto>> GetSeriesTimer([FromRoute, Required] string timerId)
         {
             var timer = await _liveTvManager.GetSeriesTimer(timerId, CancellationToken.None).ConfigureAwait(false);
-            if (timer == null)
+            if (timer is null)
             {
                 return NotFound();
             }
@@ -1201,7 +1201,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetLiveStreamFile([FromRoute, Required] string streamId, [FromRoute, Required] string container)
         {
             var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfoByUniqueId(streamId);
-            if (liveStreamInfo == null)
+            if (liveStreamInfo is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/MediaInfoController.cs b/Jellyfin.Api/Controllers/MediaInfoController.cs
index c111e92186..8115c35852 100644
--- a/Jellyfin.Api/Controllers/MediaInfoController.cs
+++ b/Jellyfin.Api/Controllers/MediaInfoController.cs
@@ -121,10 +121,10 @@ namespace Jellyfin.Api.Controllers
             var profile = playbackInfoDto?.DeviceProfile;
             _logger.LogDebug("GetPostedPlaybackInfo profile: {@Profile}", profile);
 
-            if (profile == null)
+            if (profile is null)
             {
                 var caps = _deviceManager.GetCapabilities(User.GetDeviceId());
-                if (caps != null)
+                if (caps is not null)
                 {
                     profile = caps.DeviceProfile;
                 }
@@ -154,12 +154,12 @@ namespace Jellyfin.Api.Controllers
                     liveStreamId)
                 .ConfigureAwait(false);
 
-            if (info.ErrorCode != null)
+            if (info.ErrorCode is not null)
             {
                 return info;
             }
 
-            if (profile != null)
+            if (profile is not null)
             {
                 // set device specific data
                 var item = _libraryManager.GetItemById(itemId);
@@ -194,7 +194,7 @@ namespace Jellyfin.Api.Controllers
             {
                 var mediaSource = string.IsNullOrWhiteSpace(mediaSourceId) ? info.MediaSources[0] : info.MediaSources.FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.Ordinal));
 
-                if (mediaSource != null && mediaSource.RequiresOpening && string.IsNullOrWhiteSpace(mediaSource.LiveStreamId))
+                if (mediaSource is not null && mediaSource.RequiresOpening && string.IsNullOrWhiteSpace(mediaSource.LiveStreamId))
                 {
                     var openStreamResult = await _mediaInfoHelper.OpenMediaSource(
                         HttpContext,
diff --git a/Jellyfin.Api/Controllers/PackageController.cs b/Jellyfin.Api/Controllers/PackageController.cs
index 9690aead0c..0aa7c2ac9e 100644
--- a/Jellyfin.Api/Controllers/PackageController.cs
+++ b/Jellyfin.Api/Controllers/PackageController.cs
@@ -54,7 +54,7 @@ namespace Jellyfin.Api.Controllers
                     assemblyGuid ?? default)
                 .FirstOrDefault();
 
-            if (result == null)
+            if (result is null)
             {
                 return NotFound();
             }
@@ -110,7 +110,7 @@ namespace Jellyfin.Api.Controllers
                     specificVersion: string.IsNullOrEmpty(version) ? null : Version.Parse(version))
                 .FirstOrDefault();
 
-            if (package == null)
+            if (package is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PersonsController.cs b/Jellyfin.Api/Controllers/PersonsController.cs
index 42be969b29..09f7281ecb 100644
--- a/Jellyfin.Api/Controllers/PersonsController.cs
+++ b/Jellyfin.Api/Controllers/PersonsController.cs
@@ -122,7 +122,7 @@ namespace Jellyfin.Api.Controllers
                 .AddClientFields(User);
 
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PlaylistsController.cs b/Jellyfin.Api/Controllers/PlaylistsController.cs
index fb045f891e..e0c565da18 100644
--- a/Jellyfin.Api/Controllers/PlaylistsController.cs
+++ b/Jellyfin.Api/Controllers/PlaylistsController.cs
@@ -176,7 +176,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes)
         {
             var playlist = (Playlist)_libraryManager.GetItemById(playlistId);
-            if (playlist == null)
+            if (playlist is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PlaystateController.cs b/Jellyfin.Api/Controllers/PlaystateController.cs
index 3a2ba033ea..58f9b7d356 100644
--- a/Jellyfin.Api/Controllers/PlaystateController.cs
+++ b/Jellyfin.Api/Controllers/PlaystateController.cs
@@ -353,7 +353,7 @@ namespace Jellyfin.Api.Controllers
             if (method == PlayMethod.Transcode)
             {
                 var job = string.IsNullOrWhiteSpace(playSessionId) ? null : _transcodingJobHelper.GetTranscodingJob(playSessionId);
-                if (job == null)
+                if (job is null)
                 {
                     return PlayMethod.DirectPlay;
                 }
diff --git a/Jellyfin.Api/Controllers/PluginsController.cs b/Jellyfin.Api/Controllers/PluginsController.cs
index b227dba2df..6a729b2373 100644
--- a/Jellyfin.Api/Controllers/PluginsController.cs
+++ b/Jellyfin.Api/Controllers/PluginsController.cs
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult EnablePlugin([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -95,7 +95,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult DisablePlugin([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -119,7 +119,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UninstallPluginByVersion([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -146,9 +146,9 @@ namespace Jellyfin.Api.Controllers
             var plugins = _pluginManager.Plugins.Where(p => p.Id.Equals(pluginId));
 
             // Select the un-instanced one first.
-            var plugin = plugins.FirstOrDefault(p => p.Instance == null) ?? plugins.OrderBy(p => p.Manifest.Status).FirstOrDefault();
+            var plugin = plugins.FirstOrDefault(p => p.Instance is null) ?? plugins.OrderBy(p => p.Manifest.Status).FirstOrDefault();
 
-            if (plugin != null)
+            if (plugin is not null)
             {
                 _installationManager.UninstallPlugin(plugin);
                 return NoContent();
@@ -202,7 +202,7 @@ namespace Jellyfin.Api.Controllers
             var configuration = (BasePluginConfiguration?)await JsonSerializer.DeserializeAsync(Request.Body, configPlugin.ConfigurationType, _serializerOptions)
                 .ConfigureAwait(false);
 
-            if (configuration != null)
+            if (configuration is not null)
             {
                 configPlugin.UpdateConfiguration(configuration);
             }
@@ -225,13 +225,13 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetPluginImage([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
 
             var imagePath = Path.Combine(plugin.Path, plugin.Manifest.ImagePath ?? string.Empty);
-            if (plugin.Manifest.ImagePath == null || !System.IO.File.Exists(imagePath))
+            if (plugin.Manifest.ImagePath is null || !System.IO.File.Exists(imagePath))
             {
                 return NotFound();
             }
@@ -254,7 +254,7 @@ namespace Jellyfin.Api.Controllers
         {
             var plugin = _pluginManager.GetPlugin(pluginId);
 
-            if (plugin != null)
+            if (plugin is not null)
             {
                 return plugin.Manifest;
             }
diff --git a/Jellyfin.Api/Controllers/RemoteImageController.cs b/Jellyfin.Api/Controllers/RemoteImageController.cs
index dbee56e140..da9e8cf90d 100644
--- a/Jellyfin.Api/Controllers/RemoteImageController.cs
+++ b/Jellyfin.Api/Controllers/RemoteImageController.cs
@@ -68,7 +68,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool includeAllLanguages = false)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -127,7 +127,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<ImageProviderInfo>> GetRemoteImageProviders([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -154,7 +154,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? imageUrl)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ScheduledTasksController.cs b/Jellyfin.Api/Controllers/ScheduledTasksController.cs
index 68e4f0586f..832e145050 100644
--- a/Jellyfin.Api/Controllers/ScheduledTasksController.cs
+++ b/Jellyfin.Api/Controllers/ScheduledTasksController.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(i =>
                 string.Equals(i.Id, taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -99,7 +99,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -123,7 +123,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
         {
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/SearchController.cs b/Jellyfin.Api/Controllers/SearchController.cs
index aeed0c0d61..3b7719f373 100644
--- a/Jellyfin.Api/Controllers/SearchController.cs
+++ b/Jellyfin.Api/Controllers/SearchController.cs
@@ -161,7 +161,7 @@ namespace Jellyfin.Api.Controllers
 
             var primaryImageTag = _imageProcessor.GetImageCacheTag(item, ImageType.Primary);
 
-            if (primaryImageTag != null)
+            if (primaryImageTag is not null)
             {
                 result.PrimaryImageTag = primaryImageTag;
                 result.PrimaryImageAspectRatio = _dtoService.GetPrimaryImageAspectRatio(item);
@@ -195,7 +195,7 @@ namespace Jellyfin.Api.Controllers
 
                     MusicAlbum musicAlbum = song.AlbumEntity;
 
-                    if (musicAlbum != null)
+                    if (musicAlbum is not null)
                     {
                         result.Album = musicAlbum.Name;
                         result.AlbumId = musicAlbum.Id;
@@ -221,18 +221,18 @@ namespace Jellyfin.Api.Controllers
         {
             var itemWithImage = item.HasImage(ImageType.Thumb) ? item : null;
 
-            if (itemWithImage == null && item is Episode)
+            if (itemWithImage is null && item is Episode)
             {
                 itemWithImage = GetParentWithImage<Series>(item, ImageType.Thumb);
             }
 
             itemWithImage ??= GetParentWithImage<BaseItem>(item, ImageType.Thumb);
 
-            if (itemWithImage != null)
+            if (itemWithImage is not null)
             {
                 var tag = _imageProcessor.GetImageCacheTag(itemWithImage, ImageType.Thumb);
 
-                if (tag != null)
+                if (tag is not null)
                 {
                     hint.ThumbImageTag = tag;
                     hint.ThumbImageItemId = itemWithImage.Id.ToString("N", CultureInfo.InvariantCulture);
@@ -245,11 +245,11 @@ namespace Jellyfin.Api.Controllers
             var itemWithImage = (item.HasImage(ImageType.Backdrop) ? item : null)
                 ?? GetParentWithImage<BaseItem>(item, ImageType.Backdrop);
 
-            if (itemWithImage != null)
+            if (itemWithImage is not null)
             {
                 var tag = _imageProcessor.GetImageCacheTag(itemWithImage, ImageType.Backdrop);
 
-                if (tag != null)
+                if (tag is not null)
                 {
                     hint.BackdropImageTag = tag;
                     hint.BackdropImageItemId = itemWithImage.Id.ToString("N", CultureInfo.InvariantCulture);
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index 31b95162d4..9218c3b5cf 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -294,7 +294,7 @@ namespace Jellyfin.Api.Controllers
         {
             var currentSession = await RequestHelpers.GetSession(_sessionManager, _userManager, HttpContext).ConfigureAwait(false);
 
-            if (command == null)
+            if (command is null)
             {
                 throw new ArgumentException("Request body may not be null");
             }
diff --git a/Jellyfin.Api/Controllers/StartupController.cs b/Jellyfin.Api/Controllers/StartupController.cs
index c49bde93f1..eec5779e64 100644
--- a/Jellyfin.Api/Controllers/StartupController.cs
+++ b/Jellyfin.Api/Controllers/StartupController.cs
@@ -132,7 +132,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.Users.First();
 
-            if (startupUserDto.Name != null)
+            if (startupUserDto.Name is not null)
             {
                 user.Username = startupUserDto.Name;
             }
diff --git a/Jellyfin.Api/Controllers/SubtitleController.cs b/Jellyfin.Api/Controllers/SubtitleController.cs
index 1258a9876b..ff9bd095b5 100644
--- a/Jellyfin.Api/Controllers/SubtitleController.cs
+++ b/Jellyfin.Api/Controllers/SubtitleController.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Controllers
         {
             var item = _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -522,7 +522,7 @@ namespace Jellyfin.Api.Controllers
                     .First(i => string.Equals(i.Name, name, StringComparison.OrdinalIgnoreCase));
                 var fileSize = fontFile?.Length;
 
-                if (fontFile != null && fileSize != null && fileSize > 0)
+                if (fontFile is not null && fileSize is not null && fileSize > 0)
                 {
                     _logger.LogDebug("Fallback font size is {FileSize} Bytes", fileSize);
                     return PhysicalFile(fontFile.FullName, MimeTypes.GetMimeType(fontFile.FullName));
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index ea13ceb91c..7f4f4d0776 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -247,7 +247,7 @@ namespace Jellyfin.Api.Controllers
                     .GetSeasons(user, dtoOptions)
                     .FirstOrDefault(i => i.IndexNumber == season.Value);
 
-                episodes = seasonItem == null ?
+                episodes = seasonItem is null ?
                     new List<BaseItem>()
                     : ((Season)seasonItem).GetEpisodes(user, dtoOptions);
             }
diff --git a/Jellyfin.Api/Controllers/UserController.cs b/Jellyfin.Api/Controllers/UserController.cs
index ff653fe6bb..002327d741 100644
--- a/Jellyfin.Api/Controllers/UserController.cs
+++ b/Jellyfin.Api/Controllers/UserController.cs
@@ -124,7 +124,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -173,7 +173,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -272,7 +272,7 @@ namespace Jellyfin.Api.Controllers
 
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -292,7 +292,7 @@ namespace Jellyfin.Api.Controllers
                         HttpContext.GetNormalizedRemoteIp().ToString(),
                         false).ConfigureAwait(false);
 
-                    if (success == null)
+                    if (success is null)
                     {
                         return StatusCode(StatusCodes.Status403Forbidden, "Invalid user or password entered.");
                     }
@@ -333,7 +333,7 @@ namespace Jellyfin.Api.Controllers
 
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -477,7 +477,7 @@ namespace Jellyfin.Api.Controllers
             var newUser = await _userManager.CreateUserAsync(request.Name).ConfigureAwait(false);
 
             // no need to authenticate password for new user
-            if (request.Password != null)
+            if (request.Password is not null)
             {
                 await _userManager.ChangePassword(newUser, request.Password).ConfigureAwait(false);
             }
@@ -544,7 +544,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return BadRequest();
             }
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index 8a2d5a27d9..c18fa29af6 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -306,7 +306,7 @@ namespace Jellyfin.Api.Controllers
                 var item = i.Item2[0];
                 var childCount = 0;
 
-                if (i.Item1 != null && (i.Item2.Count > 1 || i.Item1 is MusicAlbum))
+                if (i.Item1 is not null && (i.Item2.Count > 1 || i.Item1 is MusicAlbum))
                 {
                     item = i.Item1;
                     childCount = i.Item2.Count;
@@ -402,7 +402,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound();
             }
@@ -411,7 +411,7 @@ namespace Jellyfin.Api.Controllers
                 ? _libraryManager.GetUserRootFolder()
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/UserViewsController.cs b/Jellyfin.Api/Controllers/UserViewsController.cs
index 85d154cac2..3aeb444dfa 100644
--- a/Jellyfin.Api/Controllers/UserViewsController.cs
+++ b/Jellyfin.Api/Controllers/UserViewsController.cs
@@ -117,7 +117,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<SpecialViewOptionDto>> GetGroupingOptions([FromRoute, Required] Guid userId)
         {
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
index c2bb0dfffe..bb31626142 100644
--- a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
+++ b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
@@ -55,7 +55,7 @@ namespace Jellyfin.Api.Controllers
             try
             {
                 var item = _libraryManager.GetItemById(videoId);
-                if (item == null)
+                if (item is null)
                 {
                     return NotFound();
                 }
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index bf08ad376b..64d8fb498b 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
         {
             var video = (Video)_libraryManager.GetItemById(itemId);
 
-            if (video == null)
+            if (video is null)
             {
                 return NotFound("The video either does not exist or the id does not belong to a video.");
             }
@@ -199,7 +199,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var primaryVersion = items.FirstOrDefault(i => i.MediaSourceCount > 1 && string.IsNullOrEmpty(i.PrimaryVersionId));
-            if (primaryVersion == null)
+            if (primaryVersion is null)
             {
                 primaryVersion = items
                     .OrderBy(i =>
@@ -439,12 +439,12 @@ namespace Jellyfin.Api.Controllers
                     cancellationTokenSource.Token)
                 .ConfigureAwait(false);
 
-            if (@static.HasValue && @static.Value && state.DirectStreamProvider != null)
+            if (@static.HasValue && @static.Value && state.DirectStreamProvider is not null)
             {
                 StreamingHelpers.AddDlnaHeaders(state, Response.Headers, true, state.Request.StartTimeTicks, Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
-                if (liveStreamInfo == null)
+                if (liveStreamInfo is null)
                 {
                     return NotFound();
                 }
@@ -472,7 +472,7 @@ namespace Jellyfin.Api.Controllers
             var outputPathExists = System.IO.File.Exists(outputPath);
 
             var transcodingJob = _transcodingJobHelper.GetTranscodingJob(outputPath, TranscodingJobType.Progressive);
-            var isTranscodeCached = outputPathExists && transcodingJob != null;
+            var isTranscodeCached = outputPathExists && transcodingJob is not null;
 
             StreamingHelpers.AddDlnaHeaders(state, Response.Headers, (@static.HasValue && @static.Value) || isTranscodeCached, state.Request.StartTimeTicks, Request, _dlnaManager);
 
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index b732bdff3c..cd85ba221b 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -152,7 +152,7 @@ namespace Jellyfin.Api.Controllers
             var result = new QueryResult<BaseItemDto>(
                 startIndex,
                 ibnItemsArray.Count,
-                dtos.Where(i => i != null).ToArray());
+                dtos.Where(i => i is not null).ToArray());
             return result;
         }
 
@@ -173,7 +173,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<BaseItemDto> GetYear([FromRoute, Required] int year, [FromQuery] Guid? userId)
         {
             var item = _libraryManager.GetYear(year);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Helpers/AudioHelper.cs b/Jellyfin.Api/Helpers/AudioHelper.cs
index bc83ff48a8..be410ebcd6 100644
--- a/Jellyfin.Api/Helpers/AudioHelper.cs
+++ b/Jellyfin.Api/Helpers/AudioHelper.cs
@@ -85,7 +85,7 @@ namespace Jellyfin.Api.Helpers
             TranscodingJobType transcodingJobType,
             StreamingRequestDto streamingRequest)
         {
-            if (_httpContextAccessor.HttpContext == null)
+            if (_httpContextAccessor.HttpContext is null)
             {
                 throw new ResourceNotFoundException(nameof(_httpContextAccessor.HttpContext));
             }
@@ -111,12 +111,12 @@ namespace Jellyfin.Api.Helpers
                     cancellationTokenSource.Token)
                 .ConfigureAwait(false);
 
-            if (streamingRequest.Static && state.DirectStreamProvider != null)
+            if (streamingRequest.Static && state.DirectStreamProvider is not null)
             {
                 StreamingHelpers.AddDlnaHeaders(state, _httpContextAccessor.HttpContext.Response.Headers, true, streamingRequest.StartTimeTicks, _httpContextAccessor.HttpContext.Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
-                if (liveStreamInfo == null)
+                if (liveStreamInfo is null)
                 {
                     throw new FileNotFoundException();
                 }
@@ -144,7 +144,7 @@ namespace Jellyfin.Api.Helpers
             var outputPathExists = File.Exists(outputPath);
 
             var transcodingJob = _transcodingJobHelper.GetTranscodingJob(outputPath, TranscodingJobType.Progressive);
-            var isTranscodeCached = outputPathExists && transcodingJob != null;
+            var isTranscodeCached = outputPathExists && transcodingJob is not null;
 
             StreamingHelpers.AddDlnaHeaders(state, _httpContextAccessor.HttpContext.Response.Headers, streamingRequest.Static || isTranscodeCached, streamingRequest.StartTimeTicks, _httpContextAccessor.HttpContext.Request, _dlnaManager);
 
diff --git a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
index ee672cab4e..010b181f70 100644
--- a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
+++ b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
@@ -117,7 +117,7 @@ namespace Jellyfin.Api.Helpers
             TranscodingJobType transcodingJobType,
             CancellationTokenSource cancellationTokenSource)
         {
-            if (_httpContextAccessor.HttpContext == null)
+            if (_httpContextAccessor.HttpContext is null)
             {
                 throw new ResourceNotFoundException(nameof(_httpContextAccessor.HttpContext));
             }
@@ -183,7 +183,7 @@ namespace Jellyfin.Api.Helpers
                 : null;
 
             // If we're burning in subtitles then don't add additional subs to the manifest
-            if (state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+            if (state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
             {
                 subtitleGroup = null;
             }
@@ -195,7 +195,7 @@ namespace Jellyfin.Api.Helpers
 
             var basicPlaylist = AppendPlaylist(builder, state, playlistUrl, totalBitrate, subtitleGroup);
 
-            if (state.VideoStream != null && state.VideoRequest != null)
+            if (state.VideoStream is not null && state.VideoRequest is not null)
             {
                 // Provide a workaround for the case issue between flac and fLaC.
                 var flacWaPlaylist = ApplyFlacCaseWorkaround(state, basicPlaylist.ToString());
@@ -211,7 +211,7 @@ namespace Jellyfin.Api.Helpers
                     && string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase))
                 {
                     var requestedVideoProfiles = state.GetRequestedProfiles("hevc");
-                    if (requestedVideoProfiles != null && requestedVideoProfiles.Length > 0)
+                    if (requestedVideoProfiles is not null && requestedVideoProfiles.Length > 0)
                     {
                         // Force HEVC Main Profile and disable video stream copy.
                         state.OutputVideoCodec = "hevc";
@@ -271,7 +271,7 @@ namespace Jellyfin.Api.Helpers
 
             if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming, _httpContextAccessor.HttpContext.GetNormalizedRemoteIp()))
             {
-                var requestedVideoBitrate = state.VideoRequest == null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
+                var requestedVideoBitrate = state.VideoRequest is null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
 
                 // By default, vary by just 200k
                 var variation = GetBitrateVariation(totalBitrate);
@@ -327,7 +327,7 @@ namespace Jellyfin.Api.Helpers
         /// <param name="state">StreamState of the current stream.</param>
         private void AppendPlaylistVideoRangeField(StringBuilder builder, StreamState state)
         {
-            if (state.VideoStream != null && !string.IsNullOrEmpty(state.VideoStream.VideoRange))
+            if (state.VideoStream is not null && !string.IsNullOrEmpty(state.VideoStream.VideoRange))
             {
                 var videoRange = state.VideoStream.VideoRange;
                 if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
@@ -425,7 +425,7 @@ namespace Jellyfin.Api.Helpers
             {
                 framerate = Math.Round(state.TargetFramerate.GetValueOrDefault(), 3);
             }
-            else if (state.VideoStream?.RealFrameRate != null)
+            else if (state.VideoStream?.RealFrameRate is not null)
             {
                 framerate = Math.Round(state.VideoStream.RealFrameRate.GetValueOrDefault(), 3);
             }
@@ -483,7 +483,7 @@ namespace Jellyfin.Api.Helpers
                 return;
             }
 
-            var selectedIndex = state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
+            var selectedIndex = state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
             const string Format = "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"subs\",NAME=\"{0}\",DEFAULT={1},FORCED={2},AUTOSELECT=YES,URI=\"{3}\",LANGUAGE=\"{4}\"";
 
             foreach (var stream in subtitles)
@@ -523,7 +523,7 @@ namespace Jellyfin.Api.Helpers
         {
             string levelString = string.Empty;
             if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec)
-                && state.VideoStream != null
+                && state.VideoStream is not null
                 && state.VideoStream.Level.HasValue)
             {
                 levelString = state.VideoStream.Level.ToString() ?? string.Empty;
diff --git a/Jellyfin.Api/Helpers/HlsHelpers.cs b/Jellyfin.Api/Helpers/HlsHelpers.cs
index 4567621470..0f6d2aef77 100644
--- a/Jellyfin.Api/Helpers/HlsHelpers.cs
+++ b/Jellyfin.Api/Helpers/HlsHelpers.cs
@@ -47,7 +47,7 @@ namespace Jellyfin.Api.Helpers
                         while (!reader.EndOfStream)
                         {
                             var line = await reader.ReadLineAsync().ConfigureAwait(false);
-                            if (line == null)
+                            if (line is null)
                             {
                                 // Nothing currently in buffer.
                                 break;
diff --git a/Jellyfin.Api/Helpers/MediaInfoHelper.cs b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
index 4441ae023e..e8ce1ca2a2 100644
--- a/Jellyfin.Api/Helpers/MediaInfoHelper.cs
+++ b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
@@ -127,7 +127,7 @@ namespace Jellyfin.Api.Helpers
                 // Since we're going to be setting properties on MediaSourceInfos that come out of _mediaSourceManager, we should clone it
                 // Should we move this directly into MediaSourceManager?
                 var mediaSourcesClone = JsonSerializer.Deserialize<MediaSourceInfo[]>(JsonSerializer.SerializeToUtf8Bytes(mediaSources));
-                if (mediaSourcesClone != null)
+                if (mediaSourcesClone is not null)
                 {
                     result.MediaSources = mediaSourcesClone;
                 }
@@ -247,7 +247,7 @@ namespace Jellyfin.Api.Helpers
                 ? streamBuilder.BuildAudioItem(options)
                 : streamBuilder.BuildVideoItem(options);
 
-            if (streamInfo != null)
+            if (streamInfo is not null)
             {
                 streamInfo.PlaySessionId = playSessionId;
                 streamInfo.StartPositionTicks = startTimeTicks;
@@ -262,7 +262,7 @@ namespace Jellyfin.Api.Helpers
 
                 mediaSource.SupportsTranscoding =
                     streamInfo.PlayMethod == PlayMethod.DirectStream
-                    || mediaSource.TranscodingContainer != null
+                    || mediaSource.TranscodingContainer is not null
                     || profile.TranscodingProfiles.Any(i => i.Type == streamInfo.MediaType && i.Context == options.Context);
 
                 if (item is Audio)
@@ -390,16 +390,16 @@ namespace Jellyfin.Api.Helpers
             var result = await _mediaSourceManager.OpenLiveStream(request, CancellationToken.None).ConfigureAwait(false);
 
             var profile = request.DeviceProfile;
-            if (profile == null)
+            if (profile is null)
             {
                 var clientCapabilities = _deviceManager.GetCapabilities(httpContext.User.GetDeviceId());
-                if (clientCapabilities != null)
+                if (clientCapabilities is not null)
                 {
                     profile = clientCapabilities.DeviceProfile;
                 }
             }
 
-            if (profile != null)
+            if (profile is not null)
             {
                 var item = _libraryManager.GetItemById(request.ItemId);
 
@@ -431,7 +431,7 @@ namespace Jellyfin.Api.Helpers
                 }
             }
 
-            // here was a check if (result.MediaSource != null) but Rider said it will never be null
+            // here was a check if (result.MediaSource is not null) but Rider said it will never be null
             NormalizeMediaSourceContainer(result.MediaSource, profile!, DlnaProfileType.Video);
 
             return result;
diff --git a/Jellyfin.Api/Helpers/ProgressiveFileStream.cs b/Jellyfin.Api/Helpers/ProgressiveFileStream.cs
index 6f5b64ea8b..dfeeea2b0e 100644
--- a/Jellyfin.Api/Helpers/ProgressiveFileStream.cs
+++ b/Jellyfin.Api/Helpers/ProgressiveFileStream.cs
@@ -151,7 +151,7 @@ namespace Jellyfin.Api.Helpers
                 {
                     _stream.Dispose();
 
-                    if (_job != null)
+                    if (_job is not null)
                     {
                         _transcodingJobHelper?.OnTranscodeEndRequest(_job);
                     }
@@ -166,7 +166,7 @@ namespace Jellyfin.Api.Helpers
 
         private void UpdateBytesWritten(int totalBytesRead)
         {
-            if (_job != null)
+            if (_job is not null)
             {
                 _job.BytesDownloaded += totalBytesRead;
             }
diff --git a/Jellyfin.Api/Helpers/RequestHelpers.cs b/Jellyfin.Api/Helpers/RequestHelpers.cs
index 8c5af013aa..035d84513a 100644
--- a/Jellyfin.Api/Helpers/RequestHelpers.cs
+++ b/Jellyfin.Api/Helpers/RequestHelpers.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Helpers
                 httpContext.GetNormalizedRemoteIp().ToString(),
                 user).ConfigureAwait(false);
 
-            if (session == null)
+            if (session is null)
             {
                 throw new ArgumentException("Session not found.");
             }
diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index c8e62999c4..1decbcd923 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Helpers
             }
 
             streamingRequest.StreamOptions = ParseStreamOptions(httpRequest.Query);
-            if (httpRequest.Path.Value == null)
+            if (httpRequest.Path.Value is null)
             {
                 throw new ResourceNotFoundException(nameof(httpRequest.Path));
             }
@@ -137,12 +137,12 @@ namespace Jellyfin.Api.Helpers
                     ? transcodingJobHelper.GetTranscodingJob(streamingRequest.PlaySessionId)
                     : null;
 
-                if (currentJob != null)
+                if (currentJob is not null)
                 {
                     mediaSource = currentJob.MediaSource;
                 }
 
-                if (mediaSource == null)
+                if (mediaSource is null)
                 {
                     var mediaSources = await mediaSourceManager.GetPlaybackMediaSources(libraryManager.GetItemById(streamingRequest.Id), null, false, false, cancellationToken).ConfigureAwait(false);
 
@@ -150,7 +150,7 @@ namespace Jellyfin.Api.Helpers
                         ? mediaSources[0]
                         : mediaSources.Find(i => string.Equals(i.Id, streamingRequest.MediaSourceId, StringComparison.Ordinal));
 
-                    if (mediaSource == null && Guid.Parse(streamingRequest.MediaSourceId).Equals(streamingRequest.Id))
+                    if (mediaSource is null && Guid.Parse(streamingRequest.MediaSourceId).Equals(streamingRequest.Id))
                     {
                         mediaSource = mediaSources[0];
                     }
@@ -189,7 +189,7 @@ namespace Jellyfin.Api.Helpers
 
             state.OutputAudioChannels = encodingHelper.GetNumAudioChannelsParam(state, state.AudioStream, state.OutputAudioCodec);
 
-            if (state.VideoRequest != null)
+            if (state.VideoRequest is not null)
             {
                 state.OutputVideoCodec = state.Request.VideoCodec;
                 state.OutputVideoBitrate = encodingHelper.GetVideoBitrateParamValue(state.VideoRequest, state.VideoStream, state.OutputVideoCodec);
@@ -204,7 +204,7 @@ namespace Jellyfin.Api.Helpers
                         && !state.VideoRequest.MaxHeight.HasValue;
 
                     if (isVideoResolutionNotRequested
-                        && state.VideoStream != null
+                        && state.VideoStream is not null
                         && state.VideoRequest.VideoBitRate.HasValue
                         && state.VideoStream.BitRate.HasValue
                         && state.VideoRequest.VideoBitRate.Value >= state.VideoStream.BitRate.Value)
@@ -281,7 +281,7 @@ namespace Jellyfin.Api.Helpers
                         Convert.ToInt32(ms)));
                 }
 
-                if (!isStaticallyStreamed && profile != null)
+                if (!isStaticallyStreamed && profile is not null)
                 {
                     AddTimeSeekResponseHeaders(state, responseHeaders, startTimeTicks);
                 }
@@ -510,16 +510,16 @@ namespace Jellyfin.Api.Helpers
             {
                 state.DeviceProfile = dlnaManager.GetProfile(deviceProfileId);
 
-                if (state.DeviceProfile == null)
+                if (state.DeviceProfile is null)
                 {
                     var caps = deviceManager.GetCapabilities(deviceProfileId);
-                    state.DeviceProfile = caps == null ? dlnaManager.GetProfile(request.Headers) : caps.DeviceProfile;
+                    state.DeviceProfile = caps is null ? dlnaManager.GetProfile(request.Headers) : caps.DeviceProfile;
                 }
             }
 
             var profile = state.DeviceProfile;
 
-            if (profile == null)
+            if (profile is null)
             {
                 // Don't use settings from the default profile.
                 // Only use a specific profile if it was requested.
@@ -553,7 +553,7 @@ namespace Jellyfin.Api.Helpers
                     state.TargetVideoCodecTag,
                     state.IsTargetAVC);
 
-            if (mediaProfile != null)
+            if (mediaProfile is not null)
             {
                 state.MimeType = mediaProfile.MimeType;
             }
@@ -562,13 +562,13 @@ namespace Jellyfin.Api.Helpers
             {
                 var transcodingProfile = !state.IsVideoRequest ? profile.GetAudioTranscodingProfile(state.OutputContainer, audioCodec) : profile.GetVideoTranscodingProfile(state.OutputContainer, audioCodec, videoCodec);
 
-                if (transcodingProfile != null)
+                if (transcodingProfile is not null)
                 {
                     state.EstimateContentLength = transcodingProfile.EstimateContentLength;
                     // state.EnableMpegtsM2TsMode = transcodingProfile.EnableMpegtsM2TsMode;
                     state.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
 
-                    if (state.VideoRequest != null)
+                    if (state.VideoRequest is not null)
                     {
                         state.VideoRequest.CopyTimestamps = transcodingProfile.CopyTimestamps;
                         state.VideoRequest.EnableSubtitlesInManifest = transcodingProfile.EnableSubtitlesInManifest;
@@ -616,7 +616,7 @@ namespace Jellyfin.Api.Helpers
                         request.Static = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         break;
                     case 4:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.VideoCodec = val;
                         }
@@ -626,21 +626,21 @@ namespace Jellyfin.Api.Helpers
                         request.AudioCodec = val;
                         break;
                     case 6:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.AudioStreamIndex = int.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 7:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.SubtitleStreamIndex = int.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 8:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.VideoBitRate = int.Parse(val, CultureInfo.InvariantCulture);
                         }
@@ -653,21 +653,21 @@ namespace Jellyfin.Api.Helpers
                         request.MaxAudioChannels = int.Parse(val, CultureInfo.InvariantCulture);
                         break;
                     case 11:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.MaxFramerate = float.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 12:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.MaxWidth = int.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 13:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.MaxHeight = int.Parse(val, CultureInfo.InvariantCulture);
                         }
@@ -677,28 +677,28 @@ namespace Jellyfin.Api.Helpers
                         request.StartTimeTicks = long.Parse(val, CultureInfo.InvariantCulture);
                         break;
                     case 15:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.Level = val;
                         }
 
                         break;
                     case 16:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.MaxRefFrames = int.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 17:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.MaxVideoBitDepth = int.Parse(val, CultureInfo.InvariantCulture);
                         }
 
                         break;
                     case 18:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.Profile = val;
                         }
@@ -720,14 +720,14 @@ namespace Jellyfin.Api.Helpers
                         // Duplicating ItemId because of MediaMonkey
                         break;
                     case 24:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.CopyTimestamps = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         }
 
                         break;
                     case 25:
-                        if (!string.IsNullOrWhiteSpace(val) && videoRequest != null)
+                        if (!string.IsNullOrWhiteSpace(val) && videoRequest is not null)
                         {
                             if (Enum.TryParse(val, out SubtitleDeliveryMethod method))
                             {
@@ -740,7 +740,7 @@ namespace Jellyfin.Api.Helpers
                         request.TranscodingMaxAudioChannels = int.Parse(val, CultureInfo.InvariantCulture);
                         break;
                     case 27:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.EnableSubtitlesInManifest = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         }
@@ -750,7 +750,7 @@ namespace Jellyfin.Api.Helpers
                         request.Tag = val;
                         break;
                     case 29:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.RequireAvc = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         }
@@ -760,14 +760,14 @@ namespace Jellyfin.Api.Helpers
                         request.SubtitleCodec = val;
                         break;
                     case 31:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.RequireNonAnamorphic = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         }
 
                         break;
                     case 32:
-                        if (videoRequest != null)
+                        if (videoRequest is not null)
                         {
                             videoRequest.DeInterlace = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
                         }
diff --git a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
index c663c6e310..cb3442ccb8 100644
--- a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
+++ b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
@@ -416,7 +416,7 @@ namespace Jellyfin.Api.Helpers
                 }
             }
 
-            if (exs != null)
+            if (exs is not null)
             {
                 throw new AggregateException("Error deleting HLS files", exs);
             }
@@ -443,7 +443,7 @@ namespace Jellyfin.Api.Helpers
         {
             var ticks = transcodingPosition?.Ticks;
 
-            if (job != null)
+            if (job is not null)
             {
                 job.Framerate = framerate;
                 job.CompletionPercentage = percentComplete;
@@ -510,11 +510,11 @@ namespace Jellyfin.Api.Helpers
 
             await AcquireResources(state, cancellationTokenSource).ConfigureAwait(false);
 
-            if (state.VideoRequest != null && !EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
+            if (state.VideoRequest is not null && !EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
             {
                 var userId = request.HttpContext.User.GetUserId();
                 var user = userId.Equals(default) ? null : _userManager.GetUserById(userId);
-                if (user != null && !user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding))
+                if (user is not null && !user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding))
                 {
                     this.OnTranscodeFailedToStart(outputPath, transcodingJobType, state);
 
@@ -528,7 +528,7 @@ namespace Jellyfin.Api.Helpers
             }
 
             // If subtitles get burned in fonts may need to be extracted from the media file
-            if (state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+            if (state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
             {
                 var attachmentPath = Path.Combine(_appPaths.CachePath, "attachments", state.MediaSource.Id);
                 await _attachmentExtractor.ExtractAllAttachments(state.MediaPath, state.MediaSource, attachmentPath, cancellationTokenSource.Token).ConfigureAwait(false);
@@ -577,7 +577,7 @@ namespace Jellyfin.Api.Helpers
             _logger.LogInformation("{Filename} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments);
 
             var logFilePrefix = "FFmpeg.Transcode-";
-            if (state.VideoRequest != null
+            if (state.VideoRequest is not null
                 && EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
             {
                 logFilePrefix = EncodingHelper.IsCopyCodec(state.OutputAudioCodec)
@@ -748,7 +748,7 @@ namespace Jellyfin.Api.Helpers
             {
                 var job = _activeTranscodingJobs.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
 
-                if (job != null)
+                if (job is not null)
                 {
                     _activeTranscodingJobs.Remove(job);
                 }
@@ -805,7 +805,7 @@ namespace Jellyfin.Api.Helpers
 
                 _encodingHelper.AttachMediaSourceInfo(state, encodingOptions, liveStreamResponse.MediaSource, state.RequestedUrl);
 
-                if (state.VideoRequest != null)
+                if (state.VideoRequest is not null)
                 {
                     _encodingHelper.TryStreamCopy(state);
                 }
@@ -829,7 +829,7 @@ namespace Jellyfin.Api.Helpers
             {
                 var job = _activeTranscodingJobs.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
 
-                if (job == null)
+                if (job is null)
                 {
                     return null;
                 }
diff --git a/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs b/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs
index c04f3c721b..75e47a71be 100644
--- a/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs
+++ b/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs
@@ -40,7 +40,7 @@ namespace Jellyfin.Api.ModelBinders
             {
                 var value = valueProviderResult.FirstValue;
 
-                if (value != null)
+                if (value is not null)
                 {
                     var splitValues = value.Split(',', StringSplitOptions.RemoveEmptyEntries);
                     var typedValues = GetParsedResult(splitValues, elementType, converter);
diff --git a/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs b/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
index 2ccfd0c06e..da0addd0eb 100644
--- a/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
+++ b/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
@@ -14,7 +14,7 @@ namespace Jellyfin.Api.ModelBinders
         public IModelBinder? GetBinder(ModelBinderProviderContext context)
         {
             var nullableType = Nullable.GetUnderlyingType(context.Metadata.ModelType);
-            if (nullableType == null || !nullableType.IsEnum)
+            if (nullableType is null || !nullableType.IsEnum)
             {
                 // Type isn't nullable or isn't an enum.
                 return null;
diff --git a/Jellyfin.Api/ModelBinders/PipeDelimitedArrayModelBinder.cs b/Jellyfin.Api/ModelBinders/PipeDelimitedArrayModelBinder.cs
index 639ab07930..4257ba0e23 100644
--- a/Jellyfin.Api/ModelBinders/PipeDelimitedArrayModelBinder.cs
+++ b/Jellyfin.Api/ModelBinders/PipeDelimitedArrayModelBinder.cs
@@ -40,7 +40,7 @@ namespace Jellyfin.Api.ModelBinders
             {
                 var value = valueProviderResult.FirstValue;
 
-                if (value != null)
+                if (value is not null)
                 {
                     var splitValues = value.Split('|', StringSplitOptions.RemoveEmptyEntries);
                     var typedValues = GetParsedResult(splitValues, elementType, converter);
diff --git a/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs b/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
index ab67c8732a..9060500c8b 100644
--- a/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
+++ b/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
@@ -189,7 +189,7 @@ namespace Jellyfin.Api.Models.PlaybackDtos
         {
             lock (_timerLock)
             {
-                if (KillTimer != null)
+                if (KillTimer is not null)
                 {
                     KillTimer.Dispose();
                     KillTimer = null;
@@ -220,7 +220,7 @@ namespace Jellyfin.Api.Models.PlaybackDtos
 
             lock (_timerLock)
             {
-                if (KillTimer == null)
+                if (KillTimer is null)
                 {
                     Logger.LogDebug("Starting kill timer at {0}ms. JobId {1} PlaySessionId {2}", intervalMs, Id, PlaySessionId);
                     KillTimer = new Timer(new TimerCallback(callback), this, intervalMs, Timeout.Infinite);
@@ -245,7 +245,7 @@ namespace Jellyfin.Api.Models.PlaybackDtos
 
             lock (_timerLock)
             {
-                if (KillTimer != null)
+                if (KillTimer is not null)
                 {
                     var intervalMs = PingTimeout;
 
diff --git a/Jellyfin.Api/Models/PlaybackDtos/TranscodingThrottler.cs b/Jellyfin.Api/Models/PlaybackDtos/TranscodingThrottler.cs
index 99376873c0..9c4e377cde 100644
--- a/Jellyfin.Api/Models/PlaybackDtos/TranscodingThrottler.cs
+++ b/Jellyfin.Api/Models/PlaybackDtos/TranscodingThrottler.cs
@@ -210,7 +210,7 @@ namespace Jellyfin.Api.Models.PlaybackDtos
 
         private void DisposeTimer()
         {
-            if (_timer != null)
+            if (_timer is not null)
             {
                 _timer.Dispose();
                 _timer = null;
diff --git a/Jellyfin.Api/Models/StreamingDtos/StreamState.cs b/Jellyfin.Api/Models/StreamingDtos/StreamState.cs
index 8182e3c9e8..1fce1d20a3 100644
--- a/Jellyfin.Api/Models/StreamingDtos/StreamState.cs
+++ b/Jellyfin.Api/Models/StreamingDtos/StreamState.cs
@@ -43,7 +43,7 @@ namespace Jellyfin.Api.Models.StreamingDtos
             set
             {
                 BaseRequest = value;
-                IsVideoRequest = VideoRequest != null;
+                IsVideoRequest = VideoRequest is not null;
             }
         }
 
diff --git a/Jellyfin.Data/Entities/User.cs b/Jellyfin.Data/Entities/User.cs
index 26c46a704f..58d0510cdb 100644
--- a/Jellyfin.Data/Entities/User.cs
+++ b/Jellyfin.Data/Entities/User.cs
@@ -373,7 +373,7 @@ namespace Jellyfin.Data.Entities
         public void SetPermission(PermissionKind kind, bool value)
         {
             var currentPermission = Permissions.FirstOrDefault(p => p.Kind == kind);
-            if (currentPermission == null)
+            if (currentPermission is null)
             {
                 Permissions.Add(new Permission(kind, value));
             }
@@ -419,7 +419,7 @@ namespace Jellyfin.Data.Entities
                 try
                 {
                     var parsedValue = converter.ConvertFromString(stringValues[i].Trim());
-                    if (parsedValue != null)
+                    if (parsedValue is not null)
                     {
                         parsedValues[convertedCount++] = (T)parsedValue;
                     }
@@ -442,7 +442,7 @@ namespace Jellyfin.Data.Entities
         {
             var value = string.Join(Delimiter, values);
             var currentPreference = Preferences.FirstOrDefault(p => p.Kind == preference);
-            if (currentPreference == null)
+            if (currentPreference is null)
             {
                 Preferences.Add(new Preference(preference, value));
             }
@@ -462,7 +462,7 @@ namespace Jellyfin.Data.Entities
         {
             var value = string.Join(Delimiter, values);
             var currentPreference = Preferences.FirstOrDefault(p => p.Kind == preference);
-            if (currentPreference == null)
+            if (currentPreference is null)
             {
                 Preferences.Add(new Preference(preference, value));
             }
diff --git a/Jellyfin.Drawing.Skia/SkiaEncoder.cs b/Jellyfin.Drawing.Skia/SkiaEncoder.cs
index 84b261b545..3099725995 100644
--- a/Jellyfin.Drawing.Skia/SkiaEncoder.cs
+++ b/Jellyfin.Drawing.Skia/SkiaEncoder.cs
@@ -250,7 +250,7 @@ namespace Jellyfin.Drawing.Skia
 
             var resultBitmap = SKBitmap.Decode(NormalizePath(path));
 
-            if (resultBitmap == null)
+            if (resultBitmap is null)
             {
                 return Decode(path, true, orientation, out origin);
             }
@@ -274,7 +274,7 @@ namespace Jellyfin.Drawing.Skia
             {
                 var bitmap = Decode(path, true, orientation, out var origin);
 
-                if (bitmap != null && origin != SKEncodedOrigin.TopLeft)
+                if (bitmap is not null && origin != SKEncodedOrigin.TopLeft)
                 {
                     using (bitmap)
                     {
@@ -414,7 +414,7 @@ namespace Jellyfin.Drawing.Skia
             var hasIndicator = options.AddPlayedIndicator || options.UnplayedCount.HasValue || !options.PercentPlayed.Equals(0);
 
             using var bitmap = GetBitmap(inputPath, autoOrient, orientation);
-            if (bitmap == null)
+            if (bitmap is null)
             {
                 throw new InvalidDataException($"Skia unable to read image {inputPath}");
             }
diff --git a/Jellyfin.Drawing.Skia/SkiaHelper.cs b/Jellyfin.Drawing.Skia/SkiaHelper.cs
index 0478fc7c31..23e92dcb2d 100644
--- a/Jellyfin.Drawing.Skia/SkiaHelper.cs
+++ b/Jellyfin.Drawing.Skia/SkiaHelper.cs
@@ -34,7 +34,7 @@ namespace Jellyfin.Drawing.Skia
 
                 currentIndex++;
 
-                if (bitmap != null)
+                if (bitmap is not null)
                 {
                     break;
                 }
diff --git a/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs b/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
index e5fa6c2bd1..7fbae33495 100644
--- a/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
+++ b/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
@@ -85,7 +85,7 @@ namespace Jellyfin.Drawing.Skia
                             break;
                     }
 
-                    if (currentImage == null)
+                    if (currentImage is null)
                     {
                         throw new ArgumentException("Not enough valid pictures provided to create a splashscreen!");
                     }
diff --git a/Jellyfin.Drawing.Skia/StripCollageBuilder.cs b/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
index b55a994056..c8b8f3ace4 100644
--- a/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
+++ b/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
@@ -97,7 +97,7 @@ namespace Jellyfin.Drawing.Skia
             canvas.Clear(SKColors.Black);
 
             using var backdrop = SkiaHelper.GetNextValidImage(_skiaEncoder, paths, 0, out _);
-            if (backdrop == null)
+            if (backdrop is null)
             {
                 return bitmap;
             }
@@ -164,7 +164,7 @@ namespace Jellyfin.Drawing.Skia
                     using var currentBitmap = SkiaHelper.GetNextValidImage(_skiaEncoder, paths, imageIndex, out int newIndex);
                     imageIndex = newIndex;
 
-                    if (currentBitmap == null)
+                    if (currentBitmap is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Networking/Manager/NetworkManager.cs b/Jellyfin.Networking/Manager/NetworkManager.cs
index 9e06cdfe71..366428e78e 100644
--- a/Jellyfin.Networking/Manager/NetworkManager.cs
+++ b/Jellyfin.Networking/Manager/NetworkManager.cs
@@ -161,7 +161,7 @@ namespace Jellyfin.Networking.Manager
         public static Collection<IPObject> CreateCollection(IEnumerable<IPObject>? source = null)
         {
             var result = new Collection<IPObject>();
-            if (source != null)
+            if (source is not null)
             {
                 foreach (var item in source)
                 {
@@ -225,14 +225,14 @@ namespace Jellyfin.Networking.Manager
         /// <inheritdoc/>
         public bool IsExcluded(EndPoint ip)
         {
-            return ip != null && IsExcluded(((IPEndPoint)ip).Address);
+            return ip is not null && IsExcluded(((IPEndPoint)ip).Address);
         }
 
         /// <inheritdoc/>
         public Collection<IPObject> CreateIPCollection(string[] values, bool negated = false)
         {
             Collection<IPObject> col = new Collection<IPObject>();
-            if (values == null)
+            if (values is null)
             {
                 return col;
             }
@@ -335,7 +335,7 @@ namespace Jellyfin.Networking.Manager
         {
             string result;
 
-            if (source != null && IPHost.TryParse(source.Host.Host, out IPHost host))
+            if (source is not null && IPHost.TryParse(source.Host.Host, out IPHost host))
             {
                 result = GetBindInterface(host, out port);
                 port ??= source.Host.Port;
@@ -515,7 +515,7 @@ namespace Jellyfin.Networking.Manager
         /// <inheritdoc/>
         public Collection<IPObject> GetFilteredLANSubnets(Collection<IPObject>? filter = null)
         {
-            if (filter == null)
+            if (filter is null)
             {
                 return _lanSubnets.Exclude(_excludedSubnets, true).AsNetworks();
             }
@@ -538,7 +538,7 @@ namespace Jellyfin.Networking.Manager
                 return false;
             }
 
-            if (_interfaceNames != null && _interfaceNames.TryGetValue(token.ToLower(CultureInfo.InvariantCulture), out int index))
+            if (_interfaceNames is not null && _interfaceNames.TryGetValue(token.ToLower(CultureInfo.InvariantCulture), out int index))
             {
                 result = new Collection<IPObject>();
 
@@ -718,7 +718,7 @@ namespace Jellyfin.Networking.Manager
 
             // Is it the name of an interface (windows) eg, Wireless LAN adapter Wireless Network Connection 1.
             // Null check required here for automated testing.
-            if (_interfaceNames != null && token.Length > 1)
+            if (_interfaceNames is not null && token.Length > 1)
             {
                 bool partial = token[^1] == '*';
                 if (partial)
@@ -737,7 +737,7 @@ namespace Jellyfin.Networking.Manager
                 }
             }
 
-            return index != null;
+            return index is not null;
         }
 
         /// <summary>
@@ -880,7 +880,7 @@ namespace Jellyfin.Networking.Manager
             {
                 _publishedServerUrls.Clear();
                 string[] overrides = config.PublishedServerUriBySubnet;
-                if (overrides == null)
+                if (overrides is null)
                 {
                     return;
                 }
@@ -903,7 +903,7 @@ namespace Jellyfin.Networking.Manager
                         {
                             _publishedServerUrls[new IPNetAddress(IPAddress.Any)] = replacement;
                         }
-                        else if (TryParseInterface(parts[0], out Collection<IPObject>? addresses) && addresses != null)
+                        else if (TryParseInterface(parts[0], out Collection<IPObject>? addresses) && addresses is not null)
                         {
                             foreach (IPNetAddress na in addresses)
                             {
@@ -1052,7 +1052,7 @@ namespace Jellyfin.Networking.Manager
                             PhysicalAddress mac = adapter.GetPhysicalAddress();
 
                             // populate mac list
-                            if (adapter.NetworkInterfaceType != NetworkInterfaceType.Loopback && mac != null && mac != PhysicalAddress.None)
+                            if (adapter.NetworkInterfaceType != NetworkInterfaceType.Loopback && mac is not null && mac != PhysicalAddress.None)
                             {
                                 _macAddresses.Add(mac);
                             }
@@ -1235,17 +1235,17 @@ namespace Jellyfin.Networking.Manager
                     // Find all external bind addresses. Store the default gateway, but check to see if there is a better match first.
                     foreach (var addr in addresses.OrderBy(p => p.Tag))
                     {
-                        if (defaultGateway == null && !IsInLocalNetwork(addr))
+                        if (defaultGateway is null && !IsInLocalNetwork(addr))
                         {
                             defaultGateway = addr.Address;
                         }
 
-                        if (bindAddress == null && addr.Contains(source))
+                        if (bindAddress is null && addr.Contains(source))
                         {
                             bindAddress = addr.Address;
                         }
 
-                        if (defaultGateway != null && bindAddress != null)
+                        if (defaultGateway is not null && bindAddress is not null)
                         {
                             break;
                         }
@@ -1260,14 +1260,14 @@ namespace Jellyfin.Networking.Manager
                         .FirstOrDefault()?.Address;
                 }
 
-                if (bindAddress != null)
+                if (bindAddress is not null)
                 {
                     result = FormatIP6String(bindAddress);
                     _logger.LogDebug("{Source}: GetBindInterface: Has source, found a match bind interface subnets. {Result}", source, result);
                     return true;
                 }
 
-                if (isInExternalSubnet && defaultGateway != null)
+                if (isInExternalSubnet && defaultGateway is not null)
                 {
                     result = FormatIP6String(defaultGateway);
                     _logger.LogDebug("{Source}: GetBindInterface: Using first user defined external interface. {Result}", source, result);
diff --git a/Jellyfin.Server.Implementations/Devices/DeviceManager.cs b/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
index eeb958c620..bbe33be389 100644
--- a/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
+++ b/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
@@ -55,7 +55,7 @@ namespace Jellyfin.Server.Implementations.Devices
             await using (dbContext.ConfigureAwait(false))
             {
                 deviceOptions = await dbContext.DeviceOptions.AsQueryable().FirstOrDefaultAsync(dev => dev.DeviceId == deviceId).ConfigureAwait(false);
-                if (deviceOptions == null)
+                if (deviceOptions is null)
                 {
                     deviceOptions = new DeviceOptions(deviceId);
                     dbContext.DeviceOptions.Add(deviceOptions);
@@ -121,7 +121,7 @@ namespace Jellyfin.Server.Implementations.Devices
                     .ConfigureAwait(false);
             }
 
-            var deviceInfo = device == null ? null : ToDeviceInfo(device);
+            var deviceInfo = device is null ? null : ToDeviceInfo(device);
 
             return deviceInfo;
         }
@@ -139,12 +139,12 @@ namespace Jellyfin.Server.Implementations.Devices
                     devices = devices.Where(device => device.UserId.Equals(query.UserId.Value));
                 }
 
-                if (query.DeviceId != null)
+                if (query.DeviceId is not null)
                 {
                     devices = devices.Where(device => device.DeviceId == query.DeviceId);
                 }
 
-                if (query.AccessToken != null)
+                if (query.AccessToken is not null)
                 {
                     devices = devices.Where(device => device.AccessToken == query.AccessToken);
                 }
diff --git a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
index aa6015caae..aeb62e814c 100644
--- a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
+++ b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
@@ -38,13 +38,13 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
         /// <inheritdoc />
         public async Task OnEvent(PlaybackStartEventArgs eventArgs)
         {
-            if (eventArgs.MediaInfo == null)
+            if (eventArgs.MediaInfo is null)
             {
                 _logger.LogWarning("PlaybackStart reported with null media info.");
                 return;
             }
 
-            if (eventArgs.Item != null && eventArgs.Item.IsThemeMedia)
+            if (eventArgs.Item is not null && eventArgs.Item.IsThemeMedia)
             {
                 // Don't report theme song or local trailer playback
                 return;
@@ -78,7 +78,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
                 name = item.SeriesName + " - " + name;
             }
 
-            if (item.Artists != null && item.Artists.Count > 0)
+            if (item.Artists is not null && item.Artists.Count > 0)
             {
                 name = item.Artists[0] + " - " + name;
             }
diff --git a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
index 1648b1b475..dd7290fb84 100644
--- a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
+++ b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
@@ -40,13 +40,13 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
         {
             var item = eventArgs.MediaInfo;
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogWarning("PlaybackStopped reported with null media info.");
                 return;
             }
 
-            if (eventArgs.Item != null && eventArgs.Item.IsThemeMedia)
+            if (eventArgs.Item is not null && eventArgs.Item.IsThemeMedia)
             {
                 // Don't report theme song or local trailer playback
                 return;
@@ -60,7 +60,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
             var user = eventArgs.Users[0];
 
             var notificationType = GetPlaybackStoppedNotificationType(item.MediaType);
-            if (notificationType == null)
+            if (notificationType is null)
             {
                 return;
             }
@@ -86,7 +86,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
                 name = item.SeriesName + " - " + name;
             }
 
-            if (item.Artists != null && item.Artists.Count > 0)
+            if (item.Artists is not null && item.Artists.Count > 0)
             {
                 name = item.Artists[0] + " - " + name;
             }
diff --git a/Jellyfin.Server.Implementations/Events/EventManager.cs b/Jellyfin.Server.Implementations/Events/EventManager.cs
index 7f7c4750d8..f49ae8e27a 100644
--- a/Jellyfin.Server.Implementations/Events/EventManager.cs
+++ b/Jellyfin.Server.Implementations/Events/EventManager.cs
@@ -44,7 +44,7 @@ namespace Jellyfin.Server.Implementations.Events
             where T : EventArgs
         {
             using var scope = _appHost.ServiceProvider?.CreateScope();
-            if (scope == null)
+            if (scope is null)
             {
                 return;
             }
diff --git a/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs b/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
index f98a0aede8..05c6229316 100644
--- a/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
+++ b/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
@@ -27,7 +27,7 @@ public static class ServiceCollectionExtensions
                 .UseCacheKeyPrefix("EF_")
                 // Don't cache null values. Remove this optional setting if it's not necessary.
                 .SkipCachingResults(result =>
-                    result.Value == null || (result.Value is EFTableRows rows && rows.RowsCount == 0)));
+                    result.Value is null || (result.Value is EFTableRows rows && rows.RowsCount == 0)));
 
         serviceCollection.AddPooledDbContextFactory<JellyfinDb>((serviceProvider, opt) =>
         {
diff --git a/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs b/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
index 33c08c8c29..810e578075 100644
--- a/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
+++ b/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
@@ -65,7 +65,7 @@ namespace Jellyfin.Server.Implementations.Security
                     .FirstOrDefaultAsync()
                     .ConfigureAwait(false);
 
-                if (key == null)
+                if (key is null)
                 {
                     return;
                 }
diff --git a/Jellyfin.Server.Implementations/Security/AuthorizationContext.cs b/Jellyfin.Server.Implementations/Security/AuthorizationContext.cs
index 4d1a1b3cf8..ec5742bab0 100644
--- a/Jellyfin.Server.Implementations/Security/AuthorizationContext.cs
+++ b/Jellyfin.Server.Implementations/Security/AuthorizationContext.cs
@@ -32,7 +32,7 @@ namespace Jellyfin.Server.Implementations.Security
 
         public Task<AuthorizationInfo> GetAuthorizationInfo(HttpContext requestContext)
         {
-            if (requestContext.Request.HttpContext.Items.TryGetValue("AuthorizationInfo", out var cached) && cached != null)
+            if (requestContext.Request.HttpContext.Items.TryGetValue("AuthorizationInfo", out var cached) && cached is not null)
             {
                 return Task.FromResult((AuthorizationInfo)cached); // Cache should never contain null
             }
@@ -72,7 +72,7 @@ namespace Jellyfin.Server.Implementations.Security
             string? version = null;
             string? token = null;
 
-            if (auth != null)
+            if (auth is not null)
             {
                 auth.TryGetValue("DeviceId", out deviceId);
                 auth.TryGetValue("Device", out deviceName);
@@ -127,7 +127,7 @@ namespace Jellyfin.Server.Implementations.Security
             {
                 var device = await dbContext.Devices.FirstOrDefaultAsync(d => d.AccessToken == token).ConfigureAwait(false);
 
-                if (device != null)
+                if (device is not null)
                 {
                     authInfo.IsAuthenticated = true;
                     var updateToken = false;
@@ -189,7 +189,7 @@ namespace Jellyfin.Server.Implementations.Security
                 else
                 {
                     var key = await dbContext.ApiKeys.FirstOrDefaultAsync(apiKey => apiKey.AccessToken == token).ConfigureAwait(false);
-                    if (key != null)
+                    if (key is not null)
                     {
                         authInfo.IsAuthenticated = true;
                         authInfo.Client = key.Name;
diff --git a/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs b/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
index 7480a05c25..72f3d6e8ec 100644
--- a/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
+++ b/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
@@ -41,7 +41,7 @@ namespace Jellyfin.Server.Implementations.Users
         // This is the version that we need to use for local users. Because reasons.
         public Task<ProviderAuthenticationResult> Authenticate(string username, string password, User resolvedUser)
         {
-            if (resolvedUser == null)
+            if (resolvedUser is null)
             {
                 throw new AuthenticationException("Specified user does not exist.");
             }
@@ -58,7 +58,7 @@ namespace Jellyfin.Server.Implementations.Users
             }
 
             // Handle the case when the stored password is null, but the user tried to login with a password
-            if (resolvedUser.Password == null)
+            if (resolvedUser.Password is null)
             {
                 throw new AuthenticationException("Invalid username or password");
             }
diff --git a/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs b/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
index 87babc05c8..fddad1c4f9 100644
--- a/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
+++ b/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
@@ -34,7 +34,7 @@ namespace Jellyfin.Server.Implementations.Users
                 .FirstOrDefault(pref =>
                     pref.UserId.Equals(userId) && string.Equals(pref.Client, client) && pref.ItemId.Equals(itemId));
 
-            if (prefs == null)
+            if (prefs is null)
             {
                 prefs = new DisplayPreferences(userId, itemId, client);
                 _dbContext.DisplayPreferences.Add(prefs);
@@ -49,7 +49,7 @@ namespace Jellyfin.Server.Implementations.Users
             var prefs = _dbContext.ItemDisplayPreferences
                 .FirstOrDefault(pref => pref.UserId.Equals(userId) && pref.ItemId.Equals(itemId) && string.Equals(pref.Client, client));
 
-            if (prefs == null)
+            if (prefs is null)
             {
                 prefs = new ItemDisplayPreferences(userId, Guid.Empty, client);
                 _dbContext.ItemDisplayPreferences.Add(prefs);
diff --git a/Jellyfin.Server.Implementations/Users/UserManager.cs b/Jellyfin.Server.Implementations/Users/UserManager.cs
index 25560707ac..ae3fcad29b 100644
--- a/Jellyfin.Server.Implementations/Users/UserManager.cs
+++ b/Jellyfin.Server.Implementations/Users/UserManager.cs
@@ -286,7 +286,7 @@ namespace Jellyfin.Server.Implementations.Users
         /// <inheritdoc/>
         public async Task ChangeEasyPassword(User user, string newPassword, string? newPasswordSha1)
         {
-            if (newPassword != null)
+            if (newPassword is not null)
             {
                 newPasswordSha1 = _cryptoProvider.CreatePasswordHash(newPassword).ToString();
             }
@@ -317,7 +317,7 @@ namespace Jellyfin.Server.Implementations.Users
                 EnableAutoLogin = user.EnableAutoLogin,
                 LastLoginDate = user.LastLoginDate,
                 LastActivityDate = user.LastActivityDate,
-                PrimaryImageTag = user.ProfileImage != null ? _imageProcessor.GetImageCacheTag(user) : null,
+                PrimaryImageTag = user.ProfileImage is not null ? _imageProcessor.GetImageCacheTag(user) : null,
                 Configuration = new UserConfiguration
                 {
                     SubtitleMode = user.SubtitleMode,
@@ -401,12 +401,12 @@ namespace Jellyfin.Server.Implementations.Users
             var authenticationProvider = authResult.AuthenticationProvider;
             var success = authResult.Success;
 
-            if (user == null)
+            if (user is null)
             {
                 string updatedUsername = authResult.Username;
 
                 if (success
-                    && authenticationProvider != null
+                    && authenticationProvider is not null
                     && authenticationProvider is not DefaultAuthenticationProvider)
                 {
                     // Trust the username returned by the authentication provider
@@ -416,25 +416,25 @@ namespace Jellyfin.Server.Implementations.Users
                     // the authentication provider might have created it
                     user = Users.FirstOrDefault(i => string.Equals(username, i.Username, StringComparison.OrdinalIgnoreCase));
 
-                    if (authenticationProvider is IHasNewUserPolicy hasNewUserPolicy && user != null)
+                    if (authenticationProvider is IHasNewUserPolicy hasNewUserPolicy && user is not null)
                     {
                         await UpdatePolicyAsync(user.Id, hasNewUserPolicy.GetNewUserPolicy()).ConfigureAwait(false);
                     }
                 }
             }
 
-            if (success && user != null && authenticationProvider != null)
+            if (success && user is not null && authenticationProvider is not null)
             {
                 var providerId = authenticationProvider.GetType().FullName;
 
-                if (providerId != null && !string.Equals(providerId, user.AuthenticationProviderId, StringComparison.OrdinalIgnoreCase))
+                if (providerId is not null && !string.Equals(providerId, user.AuthenticationProviderId, StringComparison.OrdinalIgnoreCase))
                 {
                     user.AuthenticationProviderId = providerId;
                     await UpdateUserAsync(user).ConfigureAwait(false);
                 }
             }
 
-            if (user == null)
+            if (user is null)
             {
                 _logger.LogInformation(
                     "Authentication request for {UserName} has been denied (IP: {IP}).",
@@ -501,7 +501,7 @@ namespace Jellyfin.Server.Implementations.Users
         {
             var user = string.IsNullOrWhiteSpace(enteredUsername) ? null : GetUserByName(enteredUsername);
 
-            if (user != null && isInNetwork)
+            if (user is not null && isInNetwork)
             {
                 var passwordResetProvider = GetPasswordResetProvider(user);
                 var result = await passwordResetProvider
@@ -708,7 +708,7 @@ namespace Jellyfin.Server.Implementations.Users
         /// <inheritdoc/>
         public async Task ClearProfileImageAsync(User user)
         {
-            if (user.ProfileImage == null)
+            if (user.ProfileImage is null)
             {
                 return;
             }
diff --git a/Jellyfin.Server/Filters/FileResponseFilter.cs b/Jellyfin.Server/Filters/FileResponseFilter.cs
index eae9a80048..544fdbfd63 100644
--- a/Jellyfin.Server/Filters/FileResponseFilter.cs
+++ b/Jellyfin.Server/Filters/FileResponseFilter.cs
@@ -31,7 +31,7 @@ namespace Jellyfin.Server.Filters
                         .FirstOrDefault(o => o.Key.Equals(SuccessCode, StringComparison.Ordinal));
 
                     // Operation doesn't have a response.
-                    if (response.Value == null)
+                    if (response.Value is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Server/Filters/SecurityRequirementsOperationFilter.cs b/Jellyfin.Server/Filters/SecurityRequirementsOperationFilter.cs
index 077908895f..4af670e9a0 100644
--- a/Jellyfin.Server/Filters/SecurityRequirementsOperationFilter.cs
+++ b/Jellyfin.Server/Filters/SecurityRequirementsOperationFilter.cs
@@ -22,7 +22,7 @@ namespace Jellyfin.Server.Filters
             foreach (var attribute in context.MethodInfo.GetCustomAttributes(true))
             {
                 if (attribute is AuthorizeAttribute authorizeAttribute
-                    && authorizeAttribute.Policy != null
+                    && authorizeAttribute.Policy is not null
                     && !requiredScopes.Contains(authorizeAttribute.Policy, StringComparer.Ordinal))
                 {
                     requiredScopes.Add(authorizeAttribute.Policy);
@@ -31,12 +31,12 @@ namespace Jellyfin.Server.Filters
 
             // Add controller scopes if any.
             var controllerAttributes = context.MethodInfo.DeclaringType?.GetCustomAttributes(true);
-            if (controllerAttributes != null)
+            if (controllerAttributes is not null)
             {
                 foreach (var attribute in controllerAttributes)
                 {
                     if (attribute is AuthorizeAttribute authorizeAttribute
-                        && authorizeAttribute.Policy != null
+                        && authorizeAttribute.Policy is not null
                         && !requiredScopes.Contains(authorizeAttribute.Policy, StringComparer.Ordinal))
                     {
                         requiredScopes.Add(authorizeAttribute.Policy);
diff --git a/Jellyfin.Server/Formatters/CssOutputFormatter.cs b/Jellyfin.Server/Formatters/CssOutputFormatter.cs
index cfc9d1ad3b..fdaa48f847 100644
--- a/Jellyfin.Server/Formatters/CssOutputFormatter.cs
+++ b/Jellyfin.Server/Formatters/CssOutputFormatter.cs
@@ -30,7 +30,7 @@ namespace Jellyfin.Server.Formatters
         public override Task WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding)
         {
             var stringResponse = context.Object?.ToString();
-            return stringResponse == null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
+            return stringResponse is null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
         }
     }
 }
diff --git a/Jellyfin.Server/Formatters/XmlOutputFormatter.cs b/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
index be0baea2d2..156368d695 100644
--- a/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
+++ b/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
@@ -27,7 +27,7 @@ namespace Jellyfin.Server.Formatters
         public override Task WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding)
         {
             var stringResponse = context.Object?.ToString();
-            return stringResponse == null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
+            return stringResponse is null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
         }
     }
 }
diff --git a/Jellyfin.Server/Infrastructure/SymlinkFollowingPhysicalFileResultExecutor.cs b/Jellyfin.Server/Infrastructure/SymlinkFollowingPhysicalFileResultExecutor.cs
index bb264d5127..fd68975ff8 100644
--- a/Jellyfin.Server/Infrastructure/SymlinkFollowingPhysicalFileResultExecutor.cs
+++ b/Jellyfin.Server/Infrastructure/SymlinkFollowingPhysicalFileResultExecutor.cs
@@ -72,7 +72,7 @@ namespace Jellyfin.Server.Infrastructure
             ArgumentNullException.ThrowIfNull(context);
             ArgumentNullException.ThrowIfNull(result);
 
-            if (range != null && rangeLength == 0)
+            if (range is not null && rangeLength == 0)
             {
                 return Task.CompletedTask;
             }
@@ -85,7 +85,7 @@ namespace Jellyfin.Server.Infrastructure
 
             var response = context.HttpContext.Response;
 
-            if (range != null)
+            if (range is not null)
             {
                 return SendFileAsync(
                     result.FileName,
diff --git a/Jellyfin.Server/Middleware/ExceptionMiddleware.cs b/Jellyfin.Server/Middleware/ExceptionMiddleware.cs
index db7877c31e..91dbce19a4 100644
--- a/Jellyfin.Server/Middleware/ExceptionMiddleware.cs
+++ b/Jellyfin.Server/Middleware/ExceptionMiddleware.cs
@@ -105,7 +105,7 @@ namespace Jellyfin.Server.Middleware
             if (ex is AggregateException agg)
             {
                 var inner = agg.InnerException;
-                if (inner != null)
+                if (inner is not null)
                 {
                     return GetActualException(inner);
                 }
diff --git a/Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs b/Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs
index cdd86e28e6..24807ce383 100644
--- a/Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs
+++ b/Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs
@@ -28,7 +28,7 @@ namespace Jellyfin.Server.Middleware
         public async Task Invoke(HttpContext httpContext)
         {
             var feature = httpContext.Features.Get<IQueryFeature>();
-            if (feature != null)
+            if (feature is not null)
             {
                 httpContext.Features.Set<IQueryFeature>(new UrlDecodeQueryFeature(feature));
             }
diff --git a/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs b/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
index 37716482c3..0fad77cfe6 100644
--- a/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
+++ b/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
@@ -91,7 +91,7 @@ namespace Jellyfin.Server.Migrations.Routines
                 foreach (var result in results)
                 {
                     var dto = JsonSerializer.Deserialize<DisplayPreferencesDto>(result[3].ToBlob(), _jsonOptions);
-                    if (dto == null)
+                    if (dto is null)
                     {
                         continue;
                     }
@@ -108,7 +108,7 @@ namespace Jellyfin.Server.Migrations.Routines
 
                     displayPrefs.Add(displayPreferencesKey);
                     var existingUser = _userManager.GetUserById(dtoUserId);
-                    if (existingUser == null)
+                    if (existingUser is null)
                     {
                         _logger.LogWarning("User with ID {UserId} does not exist in the database, skipping migration.", dtoUserId);
                         continue;
diff --git a/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs b/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
index 0c2cc69a7e..2dbd82e8fd 100644
--- a/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
+++ b/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Server.Migrations.Routines
                 foreach (var entry in queryResult)
                 {
                     UserMockup? mockup = JsonSerializer.Deserialize<UserMockup>(entry[2].ToBlob(), JsonDefaults.Options);
-                    if (mockup == null)
+                    if (mockup is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Server/Program.cs b/Jellyfin.Server/Program.cs
index 7ed8388256..0b922f8210 100644
--- a/Jellyfin.Server/Program.cs
+++ b/Jellyfin.Server/Program.cs
@@ -234,7 +234,7 @@ namespace Jellyfin.Server
             finally
             {
                 // Don't throw additional exception if startup failed.
-                if (appHost.ServiceProvider != null)
+                if (appHost.ServiceProvider is not null)
                 {
                     _logger.LogInformation("Running query planner optimizations in the database... This might take a while");
                     // Run before disposing the application
@@ -407,7 +407,7 @@ namespace Jellyfin.Server
 
                 if (string.IsNullOrEmpty(configDir))
                 {
-                    if (options.DataDir != null
+                    if (options.DataDir is not null
                         || Directory.Exists(Path.Combine(dataDir, "config"))
                         || OperatingSystem.IsWindows())
                     {
@@ -582,7 +582,7 @@ namespace Jellyfin.Server
         {
             // Use the swagger API page as the default redirect path if not hosting the web client
             var inMemoryDefaultConfig = ConfigurationOptions.DefaultConfiguration;
-            if (startupConfig != null && !startupConfig.HostWebClient())
+            if (startupConfig is not null && !startupConfig.HostWebClient())
             {
                 inMemoryDefaultConfig[DefaultRedirectKey] = "api-docs/swagger";
             }
@@ -642,7 +642,7 @@ namespace Jellyfin.Server
             }
 
             string commandLineArgsString;
-            if (options.RestartArgs != null)
+            if (options.RestartArgs is not null)
             {
                 commandLineArgsString = options.RestartArgs;
             }
@@ -677,7 +677,7 @@ namespace Jellyfin.Server
             {
                 var xdgRuntimeDir = Environment.GetEnvironmentVariable("XDG_RUNTIME_DIR");
                 var socketFile = "jellyfin.sock";
-                if (xdgRuntimeDir == null)
+                if (xdgRuntimeDir is null)
                 {
                     // Fall back to config dir
                     socketPath = Path.Join(appPaths.ConfigurationDirectoryPath, socketFile);
diff --git a/Jellyfin.Server/StartupOptions.cs b/Jellyfin.Server/StartupOptions.cs
index 84ebde68c0..0a6f9bd920 100644
--- a/Jellyfin.Server/StartupOptions.cs
+++ b/Jellyfin.Server/StartupOptions.cs
@@ -88,12 +88,12 @@ namespace Jellyfin.Server
                 config.Add(HostWebClientKey, bool.FalseString);
             }
 
-            if (PublishedServerUrl != null)
+            if (PublishedServerUrl is not null)
             {
                 config.Add(AddressOverrideKey, PublishedServerUrl);
             }
 
-            if (FFmpegPath != null)
+            if (FFmpegPath is not null)
             {
                 config.Add(FfmpegPathKey, FFmpegPath);
             }
diff --git a/MediaBrowser.Common/Events/EventHelper.cs b/MediaBrowser.Common/Events/EventHelper.cs
index a9cf86fbc3..0e495f4fa3 100644
--- a/MediaBrowser.Common/Events/EventHelper.cs
+++ b/MediaBrowser.Common/Events/EventHelper.cs
@@ -19,7 +19,7 @@ namespace MediaBrowser.Common.Events
         /// <param name="logger">The logger.</param>
         public static void QueueEventIfNotNull(EventHandler? handler, object sender, EventArgs args, ILogger logger)
         {
-            if (handler != null)
+            if (handler is not null)
             {
                 Task.Run(() =>
                 {
@@ -45,7 +45,7 @@ namespace MediaBrowser.Common.Events
         /// <param name="logger">The logger.</param>
         public static void QueueEventIfNotNull<T>(EventHandler<T>? handler, object sender, T args, ILogger logger)
         {
-            if (handler != null)
+            if (handler is not null)
             {
                 Task.Run(() =>
                 {
diff --git a/MediaBrowser.Common/Extensions/HttpContextExtensions.cs b/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
index 1e5877c84c..6608704c0a 100644
--- a/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
+++ b/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
@@ -15,8 +15,8 @@ namespace MediaBrowser.Common.Extensions
         /// <returns><c>true</c> if the request is coming from LAN, <c>false</c> otherwise.</returns>
         public static bool IsLocal(this HttpContext context)
         {
-            return (context.Connection.LocalIpAddress == null
-                    && context.Connection.RemoteIpAddress == null)
+            return (context.Connection.LocalIpAddress is null
+                    && context.Connection.RemoteIpAddress is null)
                    || Equals(context.Connection.LocalIpAddress, context.Connection.RemoteIpAddress);
         }
 
diff --git a/MediaBrowser.Common/Net/IPHost.cs b/MediaBrowser.Common/Net/IPHost.cs
index 1f125f2b1d..7cf1b8aa0b 100644
--- a/MediaBrowser.Common/Net/IPHost.cs
+++ b/MediaBrowser.Common/Net/IPHost.cs
@@ -236,7 +236,7 @@ namespace MediaBrowser.Common.Net
         /// <inheritdoc/>
         public override bool Contains(IPAddress address)
         {
-            if (address != null && !Address.Equals(IPAddress.None))
+            if (address is not null && !Address.Equals(IPAddress.None))
             {
                 if (address.IsIPv4MappedToIPv6)
                 {
diff --git a/MediaBrowser.Common/Net/IPNetAddress.cs b/MediaBrowser.Common/Net/IPNetAddress.cs
index 98d1c2d97b..ac3396a9f1 100644
--- a/MediaBrowser.Common/Net/IPNetAddress.cs
+++ b/MediaBrowser.Common/Net/IPNetAddress.cs
@@ -214,7 +214,7 @@ namespace MediaBrowser.Common.Net
         /// <inheritdoc/>
         public override bool Equals(IPAddress ip)
         {
-            if (ip != null && !ip.Equals(IPAddress.None) && !Address.Equals(IPAddress.None))
+            if (ip is not null && !ip.Equals(IPAddress.None) && !Address.Equals(IPAddress.None))
             {
                 return ip.Equals(Address);
             }
diff --git a/MediaBrowser.Common/Net/IPObject.cs b/MediaBrowser.Common/Net/IPObject.cs
index 37385972f7..93655234b0 100644
--- a/MediaBrowser.Common/Net/IPObject.cs
+++ b/MediaBrowser.Common/Net/IPObject.cs
@@ -292,7 +292,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>Equality result.</returns>
         public virtual bool Equals(IPAddress ip)
         {
-            if (ip != null)
+            if (ip is not null)
             {
                 if (ip.IsIPv4MappedToIPv6)
                 {
@@ -312,7 +312,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>Equality result.</returns>
         public virtual bool Equals(IPObject? other)
         {
-            if (other != null)
+            if (other is not null)
             {
                 return !Address.Equals(IPAddress.None) && Address.Equals(other.Address);
             }
diff --git a/MediaBrowser.Common/Net/NetworkExtensions.cs b/MediaBrowser.Common/Net/NetworkExtensions.cs
index 7ad0058540..5e5e5b81b7 100644
--- a/MediaBrowser.Common/Net/NetworkExtensions.cs
+++ b/MediaBrowser.Common/Net/NetworkExtensions.cs
@@ -114,7 +114,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>True if both are equal.</returns>
         public static bool Compare(this Collection<IPObject> source, Collection<IPObject> dest)
         {
-            if (dest == null || source.Count != dest.Count)
+            if (dest is null || source.Count != dest.Count)
             {
                 return false;
             }
@@ -187,7 +187,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>A new collection, with the items excluded.</returns>
         public static Collection<IPObject> Exclude(this Collection<IPObject> source, Collection<IPObject> excludeList, bool isNetwork)
         {
-            if (source.Count == 0 || excludeList == null)
+            if (source.Count == 0 || excludeList is null)
             {
                 return new Collection<IPObject>(source);
             }
diff --git a/MediaBrowser.Common/Plugins/BasePluginOfT.cs b/MediaBrowser.Common/Plugins/BasePluginOfT.cs
index 0da5592d38..152fa8b4a2 100644
--- a/MediaBrowser.Common/Plugins/BasePluginOfT.cs
+++ b/MediaBrowser.Common/Plugins/BasePluginOfT.cs
@@ -47,7 +47,7 @@ namespace MediaBrowser.Common.Plugins
             var assemblyFilePath = assembly.Location;
 
             var dataFolderPath = Path.Combine(ApplicationPaths.PluginsPath, Path.GetFileNameWithoutExtension(assemblyFilePath));
-            if (Version != null && !Directory.Exists(dataFolderPath))
+            if (Version is not null && !Directory.Exists(dataFolderPath))
             {
                 // Try again with the version number appended to the folder name.
                 dataFolderPath += "_" + Version.ToString();
@@ -103,7 +103,7 @@ namespace MediaBrowser.Common.Plugins
             get
             {
                 // Lazy load
-                if (_configuration == null)
+                if (_configuration is null)
                 {
                     lock (_configurationSyncLock)
                     {
diff --git a/MediaBrowser.Common/Plugins/LocalPlugin.cs b/MediaBrowser.Common/Plugins/LocalPlugin.cs
index 4c8e2d5044..96af423cc3 100644
--- a/MediaBrowser.Common/Plugins/LocalPlugin.cs
+++ b/MediaBrowser.Common/Plugins/LocalPlugin.cs
@@ -43,7 +43,7 @@ namespace MediaBrowser.Common.Plugins
         {
             get
             {
-                if (_version == null)
+                if (_version is null)
                 {
                     _version = Version.Parse(Manifest.Version);
                 }
@@ -85,9 +85,9 @@ namespace MediaBrowser.Common.Plugins
         /// <returns>Comparison result.</returns>
         public static int Compare(LocalPlugin a, LocalPlugin b)
         {
-            if (a == null || b == null)
+            if (a is null || b is null)
             {
-                throw new ArgumentNullException(a == null ? nameof(a) : nameof(b));
+                throw new ArgumentNullException(a is null ? nameof(a) : nameof(b));
             }
 
             var compare = string.Compare(a.Name, b.Name, StringComparison.OrdinalIgnoreCase);
@@ -128,7 +128,7 @@ namespace MediaBrowser.Common.Plugins
         /// <inheritdoc />
         public bool Equals(LocalPlugin? other)
         {
-            if (other == null)
+            if (other is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs b/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
index 61539cae56..ed7c2c2c17 100644
--- a/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
+++ b/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
@@ -49,14 +49,14 @@ namespace MediaBrowser.Controller.BaseItemManager
                 return !baseItem.EnableMediaSourceDisplay;
             }
 
-            if (libraryTypeOptions != null)
+            if (libraryTypeOptions is not null)
             {
                 return libraryTypeOptions.MetadataFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
             }
 
             var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, baseItem.GetType().Name, StringComparison.OrdinalIgnoreCase));
 
-            return itemConfig == null || !itemConfig.DisabledMetadataFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
+            return itemConfig is null || !itemConfig.DisabledMetadataFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <inheritdoc />
@@ -74,14 +74,14 @@ namespace MediaBrowser.Controller.BaseItemManager
                 return !baseItem.EnableMediaSourceDisplay;
             }
 
-            if (libraryTypeOptions != null)
+            if (libraryTypeOptions is not null)
             {
                 return libraryTypeOptions.ImageFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
             }
 
             var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, baseItem.GetType().Name, StringComparison.OrdinalIgnoreCase));
 
-            return itemConfig == null || !itemConfig.DisabledImageFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
+            return itemConfig is null || !itemConfig.DisabledImageFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
diff --git a/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs b/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
index b036425ab3..62b70ce53c 100644
--- a/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
+++ b/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
@@ -18,7 +18,7 @@ namespace MediaBrowser.Controller.Drawing
         {
             var imageInfo = item.GetImageInfo(imageType, imageIndex);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return null;
             }
diff --git a/MediaBrowser.Controller/Entities/AggregateFolder.cs b/MediaBrowser.Controller/Entities/AggregateFolder.cs
index e671e5c711..08c622cde0 100644
--- a/MediaBrowser.Controller/Entities/AggregateFolder.cs
+++ b/MediaBrowser.Controller/Entities/AggregateFolder.cs
@@ -67,14 +67,14 @@ namespace MediaBrowser.Controller.Entities
         {
             lock (_childIdsLock)
             {
-                if (_childrenIds == null || _childrenIds.Length == 0)
+                if (_childrenIds is null || _childrenIds.Length == 0)
                 {
                     var list = base.LoadChildren();
                     _childrenIds = list.Select(i => i.Id).ToArray();
                     return list;
                 }
 
-                return _childrenIds.Select(LibraryManager.GetItemById).Where(i => i != null).ToList();
+                return _childrenIds.Select(LibraryManager.GetItemById).Where(i => i is not null).ToList();
             }
         }
 
diff --git a/MediaBrowser.Controller/Entities/Audio/Audio.cs b/MediaBrowser.Controller/Entities/Audio/Audio.cs
index 29f7bf92b7..c7216a3209 100644
--- a/MediaBrowser.Controller/Entities/Audio/Audio.cs
+++ b/MediaBrowser.Controller/Entities/Audio/Audio.cs
@@ -81,8 +81,8 @@ namespace MediaBrowser.Controller.Entities.Audio
         /// <returns>System.String.</returns>
         protected override string CreateSortName()
         {
-            return (ParentIndexNumber != null ? ParentIndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty)
-                    + (IndexNumber != null ? IndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty) + Name;
+            return (ParentIndexNumber is not null ? ParentIndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty)
+                    + (IndexNumber is not null ? IndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty) + Name;
         }
 
         public override List<string> GetUserDataKeys()
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
index 6555de8554..2dbd513a17 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
@@ -138,7 +138,7 @@ namespace MediaBrowser.Controller.Entities.Audio
 
             var artist = GetMusicArtist(new DtoOptions(false));
 
-            if (artist != null)
+            if (artist is not null)
             {
                 id.ArtistProviderIds = artist.ProviderIds;
             }
diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index 7f5f9f74bd..b7934bc098 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -494,7 +494,7 @@ namespace MediaBrowser.Controller.Entities
         {
             get
             {
-                if (_sortName == null)
+                if (_sortName is null)
                 {
                     if (!string.IsNullOrEmpty(ForcedSortName))
                     {
@@ -658,7 +658,7 @@ namespace MediaBrowser.Controller.Entities
                 }
 
                 var parent = DisplayParent;
-                if (parent != null)
+                if (parent is not null)
                 {
                     return parent.OfficialRatingForComparison;
                 }
@@ -679,7 +679,7 @@ namespace MediaBrowser.Controller.Entities
                 }
 
                 var parent = DisplayParent;
-                if (parent != null)
+                if (parent is not null)
                 {
                     return parent.CustomRatingForComparison;
                 }
@@ -880,7 +880,7 @@ namespace MediaBrowser.Controller.Entities
         /// <returns>System.String.</returns>
         protected virtual string CreateSortName()
         {
-            if (Name == null)
+            if (Name is null)
             {
                 return null; // some items may not have name filled in properly
             }
@@ -976,7 +976,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var parent = GetParent();
 
-            while (parent != null)
+            while (parent is not null)
             {
                 yield return parent;
 
@@ -1073,7 +1073,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var stream = i.VideoStream;
 
-                return stream == null || stream.Width == null ? 0 : stream.Width.Value;
+                return stream is null || stream.Width is null ? 0 : stream.Width.Value;
             })
             .ToList();
         }
@@ -1114,7 +1114,7 @@ namespace MediaBrowser.Controller.Entities
             }
 
             var video = item as Video;
-            if (video != null)
+            if (video is not null)
             {
                 info.IsoType = video.IsoType;
                 info.VideoType = video.VideoType;
@@ -1153,7 +1153,7 @@ namespace MediaBrowser.Controller.Entities
                 info.SupportsDirectStream = MediaSourceManager.SupportsDirectStream(info.Path, info.Protocol);
             }
 
-            if (video != null && video.VideoType != VideoType.VideoFile)
+            if (video is not null && video.VideoType != VideoType.VideoFile)
             {
                 info.SupportsDirectStream = false;
             }
@@ -1330,7 +1330,7 @@ namespace MediaBrowser.Controller.Entities
 
         public void SetParent(Folder parent)
         {
-            ParentId = parent == null ? Guid.Empty : parent.Id;
+            ParentId = parent is null ? Guid.Empty : parent.Id;
         }
 
         /// <summary>
@@ -1534,7 +1534,7 @@ namespace MediaBrowser.Controller.Entities
 
             var maxAllowedRating = user.MaxParentalAgeRating;
 
-            if (maxAllowedRating == null)
+            if (maxAllowedRating is null)
             {
                 return true;
             }
@@ -1692,7 +1692,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var itemById = LibraryManager.GetItemById(info.ItemId.Value);
 
-                if (itemById != null)
+                if (itemById is not null)
                 {
                     return itemById;
                 }
@@ -1701,7 +1701,7 @@ namespace MediaBrowser.Controller.Entities
             var item = FindLinkedChild(info);
 
             // If still null, log
-            if (item == null)
+            if (item is null)
             {
                 // Don't keep searching over and over
                 info.ItemId = Guid.Empty;
@@ -1725,7 +1725,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var itemByPath = LibraryManager.FindByPath(path, null);
 
-                if (itemByPath == null)
+                if (itemByPath is null)
                 {
                     Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
@@ -1737,7 +1737,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var item = LibraryManager.GetItemById(info.LibraryItemId);
 
-                if (item == null)
+                if (item is null)
                 {
                     Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
@@ -1892,7 +1892,7 @@ namespace MediaBrowser.Controller.Entities
 
             var existingImage = GetImageInfo(image.Type, index);
 
-            if (existingImage == null)
+            if (existingImage is null)
             {
                 AddImage(image);
             }
@@ -1915,7 +1915,7 @@ namespace MediaBrowser.Controller.Entities
 
             var image = GetImageInfo(type, index);
 
-            if (image == null)
+            if (image is null)
             {
                 AddImage(GetImageInfo(file, type));
             }
@@ -1942,7 +1942,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var info = GetImageInfo(type, index);
 
-            if (info == null)
+            if (info is null)
             {
                 // Nothing to do
                 return;
@@ -2035,7 +2035,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var chapter = ItemRepository.GetChapter(this, imageIndex);
 
-                if (chapter == null)
+                if (chapter is null)
                 {
                     return null;
                 }
@@ -2060,7 +2060,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var artist = FindParent<MusicArtist>();
 
-                if (artist != null)
+                if (artist is not null)
                 {
                     return artist.GetImages(imageType).ElementAtOrDefault(imageIndex);
                 }
@@ -2147,7 +2147,7 @@ namespace MediaBrowser.Controller.Entities
 
             foreach (var newImage in images)
             {
-                if (newImage == null)
+                if (newImage is null)
                 {
                     throw new ArgumentException("null image found in list");
                 }
@@ -2155,7 +2155,7 @@ namespace MediaBrowser.Controller.Entities
                 var existing = existingImages
                     .Find(i => string.Equals(i.Path, newImage.FullName, StringComparison.OrdinalIgnoreCase));
 
-                if (existing == null)
+                if (existing is null)
                 {
                     newImageList.Add(newImage);
                 }
@@ -2241,7 +2241,7 @@ namespace MediaBrowser.Controller.Entities
             var info1 = GetImageInfo(type, index1);
             var info2 = GetImageInfo(type, index2);
 
-            if (info1 == null || info2 == null)
+            if (info1 is null || info2 is null)
             {
                 // Nothing to do
                 return Task.CompletedTask;
@@ -2274,14 +2274,14 @@ namespace MediaBrowser.Controller.Entities
         {
             var userdata = UserDataManager.GetUserData(user, this);
 
-            return userdata != null && userdata.Played;
+            return userdata is not null && userdata.Played;
         }
 
         public bool IsFavoriteOrLiked(User user)
         {
             var userdata = UserDataManager.GetUserData(user, this);
 
-            return userdata != null && (userdata.IsFavorite || (userdata.Likes ?? false));
+            return userdata is not null && (userdata.IsFavorite || (userdata.Likes ?? false));
         }
 
         public virtual bool IsUnplayed(User user)
@@ -2290,7 +2290,7 @@ namespace MediaBrowser.Controller.Entities
 
             var userdata = UserDataManager.GetUserData(user, this);
 
-            return userdata == null || !userdata.Played;
+            return userdata is null || !userdata.Played;
         }
 
         ItemLookupInfo IHasLookupInfo<ItemLookupInfo>.GetLookupInfo()
@@ -2445,14 +2445,14 @@ namespace MediaBrowser.Controller.Entities
             // Try to retrieve it from the db. If we don't find it, use the resolved version
             var video = LibraryManager.GetItemById(id) as Video;
 
-            if (video == null)
+            if (video is null)
             {
                 video = LibraryManager.ResolvePath(FileSystem.GetFileSystemInfo(path)) as Video;
 
                 newOptions.ForceSave = true;
             }
 
-            if (video == null)
+            if (video is null)
             {
                 return Task.FromResult(true);
             }
@@ -2565,7 +2565,7 @@ namespace MediaBrowser.Controller.Entities
         {
             return ExtraIds
                 .Select(LibraryManager.GetItemById)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .OrderBy(i => i.SortName);
         }
 
@@ -2578,7 +2578,7 @@ namespace MediaBrowser.Controller.Entities
         {
             return ExtraIds
                 .Select(LibraryManager.GetItemById)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .Where(i => i.ExtraType.HasValue && extraTypes.Contains(i.ExtraType.Value))
                 .OrderBy(i => i.SortName);
         }
diff --git a/MediaBrowser.Controller/Entities/BaseItemExtensions.cs b/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
index 948eb43754..615d236c73 100644
--- a/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
+++ b/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
@@ -89,13 +89,13 @@ namespace MediaBrowser.Controller.Entities
                 }
 
                 var v = sourceProp.GetValue(source);
-                if (v == null)
+                if (v is null)
                 {
                     continue;
                 }
 
                 var p = destProps.Find(x => x.Name == sourceProp.Name);
-                if (p != null)
+                if (p is not null)
                 {
                     p.SetValue(dest, v);
                 }
diff --git a/MediaBrowser.Controller/Entities/Extensions.cs b/MediaBrowser.Controller/Entities/Extensions.cs
index 1acb92fdc6..d4a7793909 100644
--- a/MediaBrowser.Controller/Entities/Extensions.cs
+++ b/MediaBrowser.Controller/Entities/Extensions.cs
@@ -26,7 +26,7 @@ namespace MediaBrowser.Controller.Entities
 
             var current = item.RemoteTrailers.FirstOrDefault(i => string.Equals(i.Url, url, StringComparison.OrdinalIgnoreCase));
 
-            if (current == null)
+            if (current is null)
             {
                 var mediaUrl = new MediaUrl
                 {
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index 808f918104..e586205c32 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -483,7 +483,7 @@ namespace MediaBrowser.Controller.Entities
                     }
                 });
 
-                if (container != null)
+                if (container is not null)
                 {
                     await RefreshAllMetadataForContainer(container, refreshOptions, innerProgress, cancellationToken).ConfigureAwait(false);
                 }
@@ -515,7 +515,7 @@ namespace MediaBrowser.Controller.Entities
                 async () =>
                 {
                     var series = container as Series;
-                    if (series != null)
+                    if (series is not null)
                     {
                         await series.RefreshMetadata(refreshOptions, cancellationToken).ConfigureAwait(false);
                     }
@@ -529,7 +529,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var container = child as IMetadataContainer;
 
-            if (container != null)
+            if (container is not null)
             {
                 await RefreshAllMetadataForContainer(container, refreshOptions, progress, cancellationToken).ConfigureAwait(false);
             }
@@ -703,7 +703,7 @@ namespace MediaBrowser.Controller.Entities
                 IEnumerable<BaseItem> items;
                 Func<BaseItem, bool> filter = i => UserViewBuilder.Filter(i, user, query, UserDataManager, LibraryManager);
 
-                if (query.User == null)
+                if (query.User is null)
                 {
                     items = GetRecursiveChildren(filter);
                 }
@@ -741,7 +741,7 @@ namespace MediaBrowser.Controller.Entities
             IEnumerable<BaseItem> itemsList = LibraryManager.GetItemList(query);
             var user = query.User;
 
-            if (user != null)
+            if (user is not null)
             {
                 // needed for boxsets
                 itemsList = itemsList.Where(i => i.IsVisibleStandalone(query.User));
@@ -961,7 +961,7 @@ namespace MediaBrowser.Controller.Entities
 
             IEnumerable<BaseItem> items;
 
-            if (query.User == null)
+            if (query.User is null)
             {
                 items = Children.Where(filter);
             }
@@ -984,7 +984,7 @@ namespace MediaBrowser.Controller.Entities
             var user = query.User;
 
             // Check recursive - don't substitute in plain folder views
-            if (user != null)
+            if (user is not null)
             {
                 items = CollapseBoxSetItemsIfNeeded(items, query, this, user, ConfigurationManager, CollectionManager);
             }
@@ -1069,7 +1069,7 @@ namespace MediaBrowser.Controller.Entities
 
             if (!param.HasValue)
             {
-                if (user != null && !configurationManager.Configuration.EnableGroupingIntoCollections)
+                if (user is not null && !configurationManager.Configuration.EnableGroupingIntoCollections)
                 {
                     return false;
                 }
@@ -1311,7 +1311,7 @@ namespace MediaBrowser.Controller.Entities
             }
 
             // If there are not sub-folders, proceed as normal.
-            if (children == null)
+            if (children is null)
             {
                 children = GetEligibleChildrenForRecursiveChildren(user);
             }
@@ -1320,7 +1320,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 bool? isVisibleToUser = null;
 
-                if (query == null || UserViewBuilder.FilterItem(child, query))
+                if (query is null || UserViewBuilder.FilterItem(child, query))
                 {
                     isVisibleToUser = child.IsVisible(user);
 
@@ -1345,7 +1345,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 foreach (var child in GetLinkedChildren(user))
                 {
-                    if (query == null || UserViewBuilder.FilterItem(child, query))
+                    if (query is null || UserViewBuilder.FilterItem(child, query))
                     {
                         if (child.IsVisible(user))
                         {
@@ -1402,7 +1402,7 @@ namespace MediaBrowser.Controller.Entities
         {
             foreach (var child in Children)
             {
-                if (filter == null || filter(child))
+                if (filter is null || filter(child))
                 {
                     result[child.Id] = child;
                 }
@@ -1420,7 +1420,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 foreach (var child in GetLinkedChildren())
                 {
-                    if (filter == null || filter(child))
+                    if (filter is null || filter(child))
                     {
                         result[child.Id] = child;
                     }
@@ -1441,7 +1441,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var child = GetLinkedChild(i);
 
-                if (child != null)
+                if (child is not null)
                 {
                     list.Add(child);
                 }
@@ -1467,7 +1467,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var child = GetLinkedChild(i);
 
-                if (child != null && child.Id.Equals(itemId))
+                if (child is not null && child.Id.Equals(itemId))
                 {
                     return true;
                 }
@@ -1478,7 +1478,7 @@ namespace MediaBrowser.Controller.Entities
 
         public List<BaseItem> GetLinkedChildren(User user)
         {
-            if (!FilterLinkedChildrenPerUser || user == null)
+            if (!FilterLinkedChildrenPerUser || user is null)
             {
                 return GetLinkedChildren();
             }
@@ -1504,7 +1504,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var child = GetLinkedChild(i);
 
-                if (child == null)
+                if (child is null)
                 {
                     continue;
                 }
@@ -1547,7 +1547,7 @@ namespace MediaBrowser.Controller.Entities
         {
             return LinkedChildren
                 .Select(i => new Tuple<LinkedChild, BaseItem>(i, GetLinkedChild(i)))
-                .Where(i => i.Item2 != null);
+                .Where(i => i.Item2 is not null);
         }
 
         protected override async Task<bool> RefreshedOwnedItems(MetadataRefreshOptions options, IReadOnlyList<FileSystemMetadata> fileSystemChildren, CancellationToken cancellationToken)
@@ -1605,7 +1605,7 @@ namespace MediaBrowser.Controller.Entities
                             return null;
                         }
                     })
-                    .Where(i => i != null)
+                    .Where(i => i is not null)
                     .ToList();
 
                 var currentShortcutLinks = LinkedChildren.Where(i => i.Type == LinkedChildType.Shortcut).ToList();
@@ -1662,7 +1662,7 @@ namespace MediaBrowser.Controller.Entities
                 {
                     // The querying doesn't support virtual unaired
                     var episode = item as Episode;
-                    if (episode != null && episode.IsUnaired)
+                    if (episode is not null && episode.IsUnaired)
                     {
                         continue;
                     }
@@ -1719,7 +1719,7 @@ namespace MediaBrowser.Controller.Entities
                 return;
             }
 
-            if (itemDto != null)
+            if (itemDto is not null)
             {
                 if (fields.ContainsField(ItemFields.RecursiveItemCount))
                 {
diff --git a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
index 1bf5285382..a1e5319048 100644
--- a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
+++ b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.Controller.Entities
         public InternalItemsQuery(User? user)
             : this()
         {
-            if (user != null)
+            if (user is not null)
             {
                 SetUser(user);
             }
@@ -316,7 +316,7 @@ namespace MediaBrowser.Controller.Entities
         {
             set
             {
-                if (value == null)
+                if (value is null)
                 {
                     ParentId = Guid.Empty;
                     ParentType = null;
diff --git a/MediaBrowser.Controller/Entities/ItemImageInfo.cs b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
index ea8555dbfe..0171af27cf 100644
--- a/MediaBrowser.Controller/Entities/ItemImageInfo.cs
+++ b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
@@ -39,6 +39,6 @@ namespace MediaBrowser.Controller.Entities
         public string BlurHash { get; set; }
 
         [JsonIgnore]
-        public bool IsLocalFile => Path == null || !Path.StartsWith("http", StringComparison.OrdinalIgnoreCase);
+        public bool IsLocalFile => Path is null || !Path.StartsWith("http", StringComparison.OrdinalIgnoreCase);
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Movies/Movie.cs b/MediaBrowser.Controller/Entities/Movies/Movie.cs
index 3c12acd90d..81f6248fac 100644
--- a/MediaBrowser.Controller/Entities/Movies/Movie.cs
+++ b/MediaBrowser.Controller/Entities/Movies/Movie.cs
@@ -22,7 +22,7 @@ namespace MediaBrowser.Controller.Entities.Movies
         /// <inheritdoc />
         [JsonIgnore]
         public IReadOnlyList<Guid> SpecialFeatureIds => GetExtras()
-            .Where(extra => extra.ExtraType != null && extra is Video)
+            .Where(extra => extra.ExtraType is not null && extra is Video)
             .Select(extra => extra.Id)
             .ToArray();
 
diff --git a/MediaBrowser.Controller/Entities/PeopleHelper.cs b/MediaBrowser.Controller/Entities/PeopleHelper.cs
index 8571bfcea5..44c0e25396 100644
--- a/MediaBrowser.Controller/Entities/PeopleHelper.cs
+++ b/MediaBrowser.Controller/Entities/PeopleHelper.cs
@@ -41,7 +41,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var existing = people.FirstOrDefault(p => p.Name.Equals(person.Name, StringComparison.OrdinalIgnoreCase) && p.Type.Equals(PersonType.Actor, StringComparison.OrdinalIgnoreCase));
 
-                if (existing != null)
+                if (existing is not null)
                 {
                     existing.Type = PersonType.GuestStar;
                     MergeExisting(existing, person);
@@ -53,7 +53,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 // If the actor already exists without a role and we have one, fill it in
                 var existing = people.FirstOrDefault(p => p.Name.Equals(person.Name, StringComparison.OrdinalIgnoreCase) && (p.Type.Equals(PersonType.Actor, StringComparison.OrdinalIgnoreCase) || p.Type.Equals(PersonType.GuestStar, StringComparison.OrdinalIgnoreCase)));
-                if (existing == null)
+                if (existing is null)
                 {
                     // Wasn't there - add it
                     people.Add(person);
@@ -76,7 +76,7 @@ namespace MediaBrowser.Controller.Entities
                             string.Equals(p.Type, person.Type, StringComparison.OrdinalIgnoreCase));
 
                 // Check for dupes based on the combination of Name and Type
-                if (existing == null)
+                if (existing is null)
                 {
                     people.Add(person);
                 }
diff --git a/MediaBrowser.Controller/Entities/TV/Episode.cs b/MediaBrowser.Controller/Entities/TV/Episode.cs
index 15b721fe63..3f30ac5658 100644
--- a/MediaBrowser.Controller/Entities/TV/Episode.cs
+++ b/MediaBrowser.Controller/Entities/TV/Episode.cs
@@ -136,7 +136,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesSortName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.SortName;
+            return series is null ? SeriesName : series.SortName;
         }
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -155,7 +155,7 @@ namespace MediaBrowser.Controller.Entities.TV
             var list = base.GetUserDataKeys();
 
             var series = Series;
-            if (series != null && ParentIndexNumber.HasValue && IndexNumber.HasValue)
+            if (series is not null && ParentIndexNumber.HasValue && IndexNumber.HasValue)
             {
                 var seriesUserDataKeys = series.GetUserDataKeys();
                 var take = seriesUserDataKeys.Count;
@@ -181,14 +181,14 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesPresentationUniqueKey()
         {
             var series = Series;
-            return series == null ? null : series.PresentationUniqueKey;
+            return series is null ? null : series.PresentationUniqueKey;
         }
 
         public string FindSeasonName()
         {
             var season = Season;
 
-            if (season == null)
+            if (season is null)
             {
                 if (ParentIndexNumber.HasValue)
                 {
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.Name;
+            return series is null ? SeriesName : series.Name;
         }
 
         public Guid FindSeasonId()
@@ -212,11 +212,11 @@ namespace MediaBrowser.Controller.Entities.TV
             var season = FindParent<Season>();
 
             // Episodes directly in series folder
-            if (season == null)
+            if (season is null)
             {
                 var series = Series;
 
-                if (series != null && ParentIndexNumber.HasValue)
+                if (series is not null && ParentIndexNumber.HasValue)
                 {
                     var findNumber = ParentIndexNumber.Value;
 
@@ -226,7 +226,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 }
             }
 
-            return season == null ? Guid.Empty : season.Id;
+            return season is null ? Guid.Empty : season.Id;
         }
 
         /// <summary>
@@ -235,8 +235,8 @@ namespace MediaBrowser.Controller.Entities.TV
         /// <returns>System.String.</returns>
         protected override string CreateSortName()
         {
-            return (ParentIndexNumber != null ? ParentIndexNumber.Value.ToString("000 - ", CultureInfo.InvariantCulture) : string.Empty)
-                    + (IndexNumber != null ? IndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty) + Name;
+            return (ParentIndexNumber is not null ? ParentIndexNumber.Value.ToString("000 - ", CultureInfo.InvariantCulture) : string.Empty)
+                    + (IndexNumber is not null ? IndexNumber.Value.ToString("0000 - ", CultureInfo.InvariantCulture) : string.Empty) + Name;
         }
 
         /// <summary>
@@ -262,7 +262,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public Guid FindSeriesId()
         {
             var series = FindParent<Series>();
-            return series == null ? Guid.Empty : series.Id;
+            return series is null ? Guid.Empty : series.Id;
         }
 
         public override IEnumerable<Guid> GetAncestorIds()
@@ -302,7 +302,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
             var series = Series;
 
-            if (series != null)
+            if (series is not null)
             {
                 id.SeriesProviderIds = series.ProviderIds;
                 id.SeriesDisplayOrder = series.DisplayOrder;
diff --git a/MediaBrowser.Controller/Entities/TV/Season.cs b/MediaBrowser.Controller/Entities/TV/Season.cs
index 599d35da64..0a040a3c28 100644
--- a/MediaBrowser.Controller/Entities/TV/Season.cs
+++ b/MediaBrowser.Controller/Entities/TV/Season.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Controller.Entities.TV
             {
                 var series = Series;
 
-                if (series != null)
+                if (series is not null)
                 {
                     return series.Path;
                 }
@@ -93,7 +93,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesSortName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.SortName;
+            return series is null ? SeriesName : series.SortName;
         }
 
         public override List<string> GetUserDataKeys()
@@ -101,7 +101,7 @@ namespace MediaBrowser.Controller.Entities.TV
             var list = base.GetUserDataKeys();
 
             var series = Series;
-            if (series != null)
+            if (series is not null)
             {
                 var newList = series.GetUserDataKeys();
                 var suffix = (IndexNumber ?? 0).ToString("000", CultureInfo.InvariantCulture);
@@ -129,7 +129,7 @@ namespace MediaBrowser.Controller.Entities.TV
             if (IndexNumber.HasValue)
             {
                 var series = Series;
-                if (series != null)
+                if (series is not null)
                 {
                     return series.PresentationUniqueKey + "-" + (IndexNumber ?? 0).ToString("000", CultureInfo.InvariantCulture);
                 }
@@ -144,12 +144,12 @@ namespace MediaBrowser.Controller.Entities.TV
         /// <returns>System.String.</returns>
         protected override string CreateSortName()
         {
-            return IndexNumber != null ? IndexNumber.Value.ToString("0000", CultureInfo.InvariantCulture) : Name;
+            return IndexNumber is not null ? IndexNumber.Value.ToString("0000", CultureInfo.InvariantCulture) : Name;
         }
 
         protected override QueryResult<BaseItem> GetItemsInternal(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 return base.GetItemsInternal(query);
             }
@@ -208,13 +208,13 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesPresentationUniqueKey()
         {
             var series = Series;
-            return series == null ? null : series.PresentationUniqueKey;
+            return series is null ? null : series.PresentationUniqueKey;
         }
 
         public string FindSeriesName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.Name;
+            return series is null ? SeriesName : series.Name;
         }
 
         public Guid FindSeriesId()
@@ -233,7 +233,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
             var series = Series;
 
-            if (series != null)
+            if (series is not null)
             {
                 id.SeriesProviderIds = series.ProviderIds;
             }
diff --git a/MediaBrowser.Controller/Entities/TV/Series.cs b/MediaBrowser.Controller/Entities/TV/Series.cs
index d66802a64f..02312757ce 100644
--- a/MediaBrowser.Controller/Entities/TV/Series.cs
+++ b/MediaBrowser.Controller/Entities/TV/Series.cs
@@ -218,7 +218,7 @@ namespace MediaBrowser.Controller.Entities.TV
             query.IncludeItemTypes = new[] { BaseItemKind.Season };
             query.OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) };
 
-            if (user != null && !user.DisplayMissingEpisodes)
+            if (user is not null && !user.DisplayMissingEpisodes)
             {
                 query.IsMissing = false;
             }
@@ -266,7 +266,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 DtoOptions = options
             };
 
-            if (user == null || !user.DisplayMissingEpisodes)
+            if (user is null || !user.DisplayMissingEpisodes)
             {
                 query.IsMissing = false;
             }
@@ -369,7 +369,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) },
                 DtoOptions = options
             };
-            if (user != null)
+            if (user is not null)
             {
                 if (!user.DisplayMissingEpisodes)
                 {
@@ -384,7 +384,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
         public List<BaseItem> GetSeasonEpisodes(Season parentSeason, User user, IEnumerable<BaseItem> allSeriesEpisodes, DtoOptions options)
         {
-            if (allSeriesEpisodes == null)
+            if (allSeriesEpisodes is null)
             {
                 return GetSeasonEpisodes(parentSeason, user, options);
             }
@@ -426,7 +426,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 }
 
                 var season = episodeItem.Season;
-                return season != null && string.Equals(GetUniqueSeriesKey(season), seasonPresentationKey, StringComparison.OrdinalIgnoreCase);
+                return season is not null && string.Equals(GetUniqueSeriesKey(season), seasonPresentationKey, StringComparison.OrdinalIgnoreCase);
             });
         }
 
@@ -448,7 +448,7 @@ namespace MediaBrowser.Controller.Entities.TV
             {
                 var episode = i;
 
-                if (episode != null)
+                if (episode is not null)
                 {
                     var currentSeasonNumber = episode.AiredSeasonNumber;
 
diff --git a/MediaBrowser.Controller/Entities/UserItemData.cs b/MediaBrowser.Controller/Entities/UserItemData.cs
index 50ba9ef308..ecca440f05 100644
--- a/MediaBrowser.Controller/Entities/UserItemData.cs
+++ b/MediaBrowser.Controller/Entities/UserItemData.cs
@@ -105,7 +105,7 @@ namespace MediaBrowser.Controller.Entities
         {
             get
             {
-                if (Rating != null)
+                if (Rating is not null)
                 {
                     return Rating >= MinLikeValue;
                 }
diff --git a/MediaBrowser.Controller/Entities/UserRootFolder.cs b/MediaBrowser.Controller/Entities/UserRootFolder.cs
index e547db5231..69743b926c 100644
--- a/MediaBrowser.Controller/Entities/UserRootFolder.cs
+++ b/MediaBrowser.Controller/Entities/UserRootFolder.cs
@@ -56,14 +56,14 @@ namespace MediaBrowser.Controller.Entities
         {
             lock (_childIdsLock)
             {
-                if (_childrenIds == null)
+                if (_childrenIds is null)
                 {
                     var list = base.LoadChildren();
                     _childrenIds = list.Select(i => i.Id).ToList();
                     return list;
                 }
 
-                return _childrenIds.Select(LibraryManager.GetItemById).Where(i => i != null).ToList();
+                return _childrenIds.Select(LibraryManager.GetItemById).Where(i => i is not null).ToList();
             }
         }
 
diff --git a/MediaBrowser.Controller/Entities/UserViewBuilder.cs b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
index f467a60384..c276ab463a 100644
--- a/MediaBrowser.Controller/Entities/UserViewBuilder.cs
+++ b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
@@ -46,7 +46,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var user = query.User;
 
-            // if (query.IncludeItemTypes != null &&
+            // if (query.IncludeItemTypes is not null &&
             //    query.IncludeItemTypes.Length == 1 &&
             //    string.Equals(query.IncludeItemTypes[0], "Playlist", StringComparison.OrdinalIgnoreCase))
             // {
@@ -263,7 +263,7 @@ namespace MediaBrowser.Controller.Entities
                         return null;
                     }
                 })
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .Select(i => GetUserViewWithName(SpecialFolder.MovieGenre, i.SortName, parent));
 
             return GetResult(genres, query);
@@ -391,7 +391,7 @@ namespace MediaBrowser.Controller.Entities
                         return null;
                     }
                 })
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .Select(i => GetUserViewWithName(SpecialFolder.TvGenre, i.SortName, parent));
 
             return GetResult(genres, query);
@@ -559,7 +559,7 @@ namespace MediaBrowser.Controller.Entities
                 var val = query.Is3D.Value;
                 var video = item as Video;
 
-                if (video == null || val != video.Video3DFormat.HasValue)
+                if (video is null || val != video.Video3DFormat.HasValue)
                 {
                     return false;
                 }
@@ -689,7 +689,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var video = item as Video;
 
-                if (video == null || val != video.HasSubtitles)
+                if (video is null || val != video.HasSubtitles)
                 {
                     return false;
                 }
@@ -776,7 +776,7 @@ namespace MediaBrowser.Controller.Entities
             if (query.VideoTypes.Length > 0)
             {
                 var video = item as Video;
-                if (video == null || !query.VideoTypes.Contains(video.VideoType))
+                if (video is null || !query.VideoTypes.Contains(video.VideoType))
                 {
                     return false;
                 }
@@ -791,7 +791,7 @@ namespace MediaBrowser.Controller.Entities
             if (query.StudioIds.Length > 0 && !query.StudioIds.Any(id =>
             {
                 var studioItem = libraryManager.GetItemById(id);
-                return studioItem != null && item.Studios.Contains(studioItem.Name, StringComparison.OrdinalIgnoreCase);
+                return studioItem is not null && item.Studios.Contains(studioItem.Name, StringComparison.OrdinalIgnoreCase);
             }))
             {
                 return false;
@@ -801,7 +801,7 @@ namespace MediaBrowser.Controller.Entities
             if (query.GenreIds.Count > 0 && !query.GenreIds.Any(id =>
             {
                 var genreItem = libraryManager.GetItemById(id);
-                return genreItem != null && item.Genres.Contains(genreItem.Name, StringComparison.OrdinalIgnoreCase);
+                return genreItem is not null && item.Genres.Contains(genreItem.Name, StringComparison.OrdinalIgnoreCase);
             }))
             {
                 return false;
@@ -913,7 +913,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var episode = item as Episode;
 
-                if (episode == null)
+                if (episode is null)
                 {
                     return false;
                 }
@@ -929,7 +929,7 @@ namespace MediaBrowser.Controller.Entities
 
         private IEnumerable<BaseItem> GetMediaFolders(User user)
         {
-            if (user == null)
+            if (user is null)
             {
                 return _libraryManager.RootFolder
                     .Children
@@ -945,14 +945,14 @@ namespace MediaBrowser.Controller.Entities
 
         private BaseItem[] GetMediaFolders(User user, IEnumerable<string> viewTypes)
         {
-            if (user == null)
+            if (user is null)
             {
                 return GetMediaFolders(null)
                     .Where(i =>
                     {
                         var folder = i as ICollectionFolder;
 
-                        return folder != null && viewTypes.Contains(folder.CollectionType ?? string.Empty, StringComparison.OrdinalIgnoreCase);
+                        return folder is not null && viewTypes.Contains(folder.CollectionType ?? string.Empty, StringComparison.OrdinalIgnoreCase);
                     }).ToArray();
             }
 
@@ -961,13 +961,13 @@ namespace MediaBrowser.Controller.Entities
                 {
                     var folder = i as ICollectionFolder;
 
-                    return folder != null && viewTypes.Contains(folder.CollectionType ?? string.Empty, StringComparison.OrdinalIgnoreCase);
+                    return folder is not null && viewTypes.Contains(folder.CollectionType ?? string.Empty, StringComparison.OrdinalIgnoreCase);
                 }).ToArray();
         }
 
         private BaseItem[] GetMediaFolders(Folder parent, User user, IEnumerable<string> viewTypes)
         {
-            if (parent == null || parent is UserView)
+            if (parent is null || parent is UserView)
             {
                 return GetMediaFolders(user, viewTypes);
             }
diff --git a/MediaBrowser.Controller/Entities/Video.cs b/MediaBrowser.Controller/Entities/Video.cs
index 5de2e0f50e..5b7abea10a 100644
--- a/MediaBrowser.Controller/Entities/Video.cs
+++ b/MediaBrowser.Controller/Entities/Video.cs
@@ -373,7 +373,7 @@ namespace MediaBrowser.Controller.Entities
         {
             return LinkedAlternateVersions
                 .Select(GetLinkedChild)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .OfType<Video>()
                 .OrderBy(i => i.SortName);
         }
@@ -386,7 +386,7 @@ namespace MediaBrowser.Controller.Entities
         {
             return GetAdditionalPartIds()
                 .Select(i => LibraryManager.GetItemById(i))
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .OfType<Video>()
                 .OrderBy(i => i.SortName);
         }
@@ -469,7 +469,7 @@ namespace MediaBrowser.Controller.Entities
 
             var localAlternates = GetLocalAlternateVersionIds()
                 .Select(i => LibraryManager.GetItemById(i))
-                .Where(i => i != null);
+                .Where(i => i is not null);
 
             foreach (var item in localAlternates)
             {
@@ -542,7 +542,7 @@ namespace MediaBrowser.Controller.Entities
                     return i.Item1 is Video video ? video.GetLocalAlternateVersionIds() : Enumerable.Empty<Guid>();
                 })
                 .Select(LibraryManager.GetItemById)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .ToList();
 
             list.AddRange(localAlternates.Select(i => (i, MediaSourceType.Default)));
diff --git a/MediaBrowser.Controller/Library/ItemResolveArgs.cs b/MediaBrowser.Controller/Library/ItemResolveArgs.cs
index 91d162b411..0424399c8e 100644
--- a/MediaBrowser.Controller/Library/ItemResolveArgs.cs
+++ b/MediaBrowser.Controller/Library/ItemResolveArgs.cs
@@ -47,7 +47,7 @@ namespace MediaBrowser.Controller.Library
 
         public LibraryOptions LibraryOptions
         {
-            get => _libraryOptions ??= Parent == null ? new LibraryOptions() : BaseItem.LibraryManager.GetLibraryOptions(Parent);
+            get => _libraryOptions ??= Parent is null ? new LibraryOptions() : BaseItem.LibraryManager.GetLibraryOptions(Parent);
             set => _libraryOptions = value;
         }
 
@@ -119,7 +119,7 @@ namespace MediaBrowser.Controller.Library
             get
             {
                 var paths = string.IsNullOrEmpty(Path) ? Array.Empty<string>() : new[] { Path };
-                return AdditionalLocations == null ? paths : paths.Concat(AdditionalLocations).ToArray();
+                return AdditionalLocations is null ? paths : paths.Concat(AdditionalLocations).ToArray();
             }
         }
 
@@ -130,13 +130,13 @@ namespace MediaBrowser.Controller.Library
         {
             var parent = Parent;
 
-            if (parent != null)
+            if (parent is not null)
             {
                 var item = parent as T;
 
                 // Just in case the user decided to nest episodes.
                 // Not officially supported but in some cases we can handle it.
-                if (item == null)
+                if (item is null)
                 {
                     var parents = parent.GetParents();
                     foreach (var currentParent in parents)
@@ -148,7 +148,7 @@ namespace MediaBrowser.Controller.Library
                     }
                 }
 
-                return item != null;
+                return item is not null;
             }
 
             return false;
@@ -287,14 +287,14 @@ namespace MediaBrowser.Controller.Library
         /// <returns><c>true</c> if the arguments are the same, <c>false</c> otherwise.</returns>
         protected bool Equals(ItemResolveArgs args)
         {
-            if (args != null)
+            if (args is not null)
             {
-                if (args.Path == null && Path == null)
+                if (args.Path is null && Path is null)
                 {
                     return true;
                 }
 
-                return args.Path != null && BaseItem.FileSystem.AreEqual(args.Path, Path);
+                return args.Path is not null && BaseItem.FileSystem.AreEqual(args.Path, Path);
             }
 
             return false;
diff --git a/MediaBrowser.Controller/Library/NameExtensions.cs b/MediaBrowser.Controller/Library/NameExtensions.cs
index 9d78b8b6c8..919570e893 100644
--- a/MediaBrowser.Controller/Library/NameExtensions.cs
+++ b/MediaBrowser.Controller/Library/NameExtensions.cs
@@ -15,7 +15,7 @@ namespace MediaBrowser.Controller.Library
 
         private static string RemoveDiacritics(string? name)
         {
-            if (name == null)
+            if (name is null)
             {
                 return string.Empty;
             }
diff --git a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
index 335222da96..9788260420 100644
--- a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
+++ b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
@@ -139,7 +139,7 @@ namespace MediaBrowser.Controller.LiveTv
                 Path = Path,
                 RunTimeTicks = RunTimeTicks,
                 Type = MediaSourceType.Placeholder,
-                IsInfiniteStream = RunTimeTicks == null
+                IsInfiniteStream = RunTimeTicks is null
             };
 
             list.Add(info);
diff --git a/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs b/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
index 6c4a5ea177..514323238e 100644
--- a/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
+++ b/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
@@ -246,7 +246,7 @@ namespace MediaBrowser.Controller.LiveTv
 
             var listings = GetListingsProviderInfo();
 
-            if (listings != null)
+            if (listings is not null)
             {
                 if (!string.IsNullOrEmpty(listings.MoviePrefix) && name.StartsWith(listings.MoviePrefix, StringComparison.OrdinalIgnoreCase))
                 {
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index fae53acbfb..7264c5eed0 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -162,7 +162,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsHwTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null
+            if (state.VideoStream is null
                 || !options.EnableTonemapping
                 || GetVideoColorBitDepth(state) != 10)
             {
@@ -189,7 +189,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsVulkanHwTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null)
+            if (state.VideoStream is null)
             {
                 return false;
             }
@@ -202,7 +202,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsVaapiVppTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null
+            if (state.VideoStream is null
                 || !options.EnableVppTonemapping
                 || GetVideoColorBitDepth(state) != 10)
             {
@@ -682,7 +682,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public string GetGraphicalSubCanvasSize(EncodingJobInfo state)
         {
-            if (state.SubtitleStream != null
+            if (state.SubtitleStream is not null
                 && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode
                 && !state.SubtitleStream.IsTextSubtitleStream)
             {
@@ -932,7 +932,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 .Append(GetInputPathArgument(state));
 
             // sub2video for external graphical subtitles
-            if (state.SubtitleStream != null
+            if (state.SubtitleStream is not null
                 && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode
                 && !state.SubtitleStream.IsTextSubtitleStream
                 && state.SubtitleStream.IsExternal)
@@ -963,7 +963,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 arg.Append(" -i file:\"").Append(subtitlePath).Append('\"');
             }
 
-            if (state.AudioStream != null && state.AudioStream.IsExternal)
+            if (state.AudioStream is not null && state.AudioStream.IsExternal)
             {
                 // Also seek the external audio stream.
                 var seekAudioParam = GetFastSeekCommandLineParameter(state, options, segmentContainer);
@@ -1066,7 +1066,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public string GetVideoBitrateParam(EncodingJobInfo state, string videoCodec)
         {
-            if (state.OutputVideoBitrate == null)
+            if (state.OutputVideoBitrate is null)
             {
                 return string.Empty;
             }
@@ -1231,7 +1231,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var maxrate = request.MaxFramerate;
 
-            if (maxrate.HasValue && state.VideoStream != null)
+            if (maxrate.HasValue && state.VideoStream is not null)
             {
                 var contentRate = state.VideoStream.AverageFrameRate ?? state.VideoStream.RealFrameRate;
 
@@ -1981,7 +1981,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var bitrate = request.VideoBitRate;
 
-            if (videoStream != null)
+            if (videoStream is not null)
             {
                 var isUpscaling = request.Height.HasValue
                     && videoStream.Height.HasValue
@@ -2076,7 +2076,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public int? GetAudioBitrateParam(int? audioBitRate, string audioCodec, MediaStream audioStream)
         {
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 return null;
             }
@@ -2130,7 +2130,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             // Boost volume to 200% when downsampling from 6ch to 2ch
             if (channels.HasValue
                 && channels.Value <= 2
-                && state.AudioStream != null
+                && state.AudioStream is not null
                 && state.AudioStream.Channels.HasValue
                 && state.AudioStream.Channels.Value > 5
                 && !encodingOptions.DownMixAudioBoost.Equals(1))
@@ -2139,7 +2139,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var isCopyingTimestamps = state.CopyTimestamps || state.TranscodingType != TranscodingJobType.Progressive;
-            if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode && !isCopyingTimestamps)
+            if (state.SubtitleStream is not null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode && !isCopyingTimestamps)
             {
                 var seconds = TimeSpan.FromTicks(state.StartTimeTicks ?? 0).TotalSeconds;
 
@@ -2167,7 +2167,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <returns>System.Nullable{System.Int32}.</returns>
         public int? GetNumAudioChannelsParam(EncodingJobInfo state, MediaStream audioStream, string outputAudioCodec)
         {
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 return null;
             }
@@ -2320,26 +2320,26 @@ namespace MediaBrowser.Controller.MediaEncoding
             // If we don't have known media info
             // If input is video, use -sn to drop subtitles
             // Otherwise just return empty
-            if (state.VideoStream == null && state.AudioStream == null)
+            if (state.VideoStream is null && state.AudioStream is null)
             {
                 return state.IsInputVideo ? "-sn" : string.Empty;
             }
 
             // We have media info, but we don't know the stream index
-            if (state.VideoStream != null && state.VideoStream.Index == -1)
+            if (state.VideoStream is not null && state.VideoStream.Index == -1)
             {
                 return "-sn";
             }
 
             // We have media info, but we don't know the stream index
-            if (state.AudioStream != null && state.AudioStream.Index == -1)
+            if (state.AudioStream is not null && state.AudioStream.Index == -1)
             {
                 return state.IsInputVideo ? "-sn" : string.Empty;
             }
 
             var args = string.Empty;
 
-            if (state.VideoStream != null)
+            if (state.VideoStream is not null)
             {
                 int videoStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.VideoStream);
 
@@ -2354,12 +2354,12 @@ namespace MediaBrowser.Controller.MediaEncoding
                 args += "-vn";
             }
 
-            if (state.AudioStream != null)
+            if (state.AudioStream is not null)
             {
                 int audioStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.AudioStream);
                 if (state.AudioStream.IsExternal)
                 {
-                    bool hasExternalGraphicsSubs = state.SubtitleStream != null
+                    bool hasExternalGraphicsSubs = state.SubtitleStream is not null
                         && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode
                         && state.SubtitleStream.IsExternal
                         && !state.SubtitleStream.IsTextSubtitleStream;
@@ -2385,7 +2385,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var subtitleMethod = state.SubtitleDeliveryMethod;
-            if (state.SubtitleStream == null || subtitleMethod == SubtitleDeliveryMethod.Hls)
+            if (state.SubtitleStream is null || subtitleMethod == SubtitleDeliveryMethod.Hls)
             {
                 args += " -map -0:s";
             }
@@ -2427,7 +2427,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 var stream = streams.FirstOrDefault(s => s.Index == desiredIndex.Value);
 
-                if (stream != null)
+                if (stream is not null)
                 {
                     return stream;
                 }
@@ -2731,7 +2731,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // default
-            if (filter == null)
+            if (filter is null)
             {
                 if (requestedHeight > 0)
                 {
@@ -2875,7 +2875,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doDeintHevc = state.DeInterlace("h265", true) || state.DeInterlace("hevc", true);
             var doDeintH2645 = doDeintH264 || doDeintHevc;
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
 
@@ -2990,7 +2990,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doDeintH2645 = doDeintH264 || doDeintHevc;
             var doCuTonemap = IsHwTonemapAvailable(state, options);
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -3180,7 +3180,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doDeintH2645 = doDeintH264 || doDeintHevc;
             var doOclTonemap = IsHwTonemapAvailable(state, options);
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -3402,7 +3402,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doDeintH2645 = doDeintH264 || doDeintHevc;
             var doOclTonemap = IsHwTonemapAvailable(state, options);
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -3605,7 +3605,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doTonemap = doVaVppTonemap || doOclTonemap;
             var doDeintH2645 = doDeintH264 || doDeintHevc;
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -3882,7 +3882,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doTonemap = doVaVppTonemap || doOclTonemap;
             var doDeintH2645 = doDeintH264 || doDeintHevc;
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -4078,7 +4078,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doVkTonemap = IsVulkanHwTonemapAvailable(state, options);
             var doDeintH2645 = doDeintH264 || doDeintHevc;
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
             var hasAssSubs = hasSubs
@@ -4277,7 +4277,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var doDeintH2645 = doDeintH264 || doDeintHevc;
             var doOclTonemap = IsHwTonemapAvailable(state, options);
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
 
@@ -4440,12 +4440,12 @@ namespace MediaBrowser.Controller.MediaEncoding
             string outputVideoCodec)
         {
             var videoStream = state.VideoStream;
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 return string.Empty;
             }
 
-            var hasSubs = state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasSubs = state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
             var hasTextSubs = hasSubs && state.SubtitleStream.IsTextSubtitleStream;
             var hasGraphicalSubs = hasSubs && !state.SubtitleStream.IsTextSubtitleStream;
 
@@ -4495,7 +4495,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (overlayFilters?.Count > 0
                 && subFilters?.Count > 0
-                && state.SubtitleStream != null)
+                && state.SubtitleStream is not null)
             {
                 // overlay graphical/text subtitles
                 var subStr = string.Format(
@@ -4582,7 +4582,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public static int GetVideoColorBitDepth(EncodingJobInfo state)
         {
             var videoStream = state.VideoStream;
-            if (videoStream != null)
+            if (videoStream is not null)
             {
                 if (videoStream.BitDepth.HasValue)
                 {
@@ -4623,7 +4623,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var videoStream = state.VideoStream;
             var mediaSource = state.MediaSource;
-            if (videoStream == null || mediaSource == null)
+            if (videoStream is null || mediaSource is null)
             {
                 return null;
             }
@@ -5196,7 +5196,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 #nullable disable
         public void TryStreamCopy(EncodingJobInfo state)
         {
-            if (state.VideoStream != null && CanStreamCopyVideo(state, state.VideoStream))
+            if (state.VideoStream is not null && CanStreamCopyVideo(state, state.VideoStream))
             {
                 state.OutputVideoCodec = "copy";
             }
@@ -5205,13 +5205,13 @@ namespace MediaBrowser.Controller.MediaEncoding
                 var user = state.User;
 
                 // If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
-                if (user != null && !user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding))
+                if (user is not null && !user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding))
                 {
                     state.OutputVideoCodec = "copy";
                 }
             }
 
-            if (state.AudioStream != null
+            if (state.AudioStream is not null
                 && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs))
             {
                 state.OutputAudioCodec = "copy";
@@ -5221,7 +5221,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 var user = state.User;
 
                 // If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
-                if (user != null && !user.HasPermission(PermissionKind.EnableAudioPlaybackTranscoding))
+                if (user is not null && !user.HasPermission(PermissionKind.EnableAudioPlaybackTranscoding))
                 {
                     state.OutputAudioCodec = "copy";
                 }
@@ -5418,7 +5418,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 state.SubtitleDeliveryMethod = videoRequest.SubtitleMethod;
                 state.AudioStream = GetMediaStream(mediaStreams, videoRequest.AudioStreamIndex, MediaStreamType.Audio);
 
-                if (state.SubtitleStream != null && !state.SubtitleStream.IsExternal)
+                if (state.SubtitleStream is not null && !state.SubtitleStream.IsExternal)
                 {
                     state.InternalSubtitleStreamOffset = mediaStreams.Where(i => i.Type == MediaStreamType.Subtitle && !i.IsExternal).ToList().IndexOf(state.SubtitleStream);
                 }
@@ -5436,7 +5436,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var request = state.BaseRequest;
             var supportedAudioCodecs = state.SupportedAudioCodecs;
-            if (request != null && supportedAudioCodecs != null && supportedAudioCodecs.Length > 0)
+            if (request is not null && supportedAudioCodecs is not null && supportedAudioCodecs.Length > 0)
             {
                 var supportedAudioCodecsList = supportedAudioCodecs.ToList();
 
@@ -5449,7 +5449,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var supportedVideoCodecs = state.SupportedVideoCodecs;
-            if (request != null && supportedVideoCodecs != null && supportedVideoCodecs.Length > 0)
+            if (request is not null && supportedVideoCodecs is not null && supportedVideoCodecs.Length > 0)
             {
                 var supportedVideoCodecsList = supportedVideoCodecs.ToList();
 
@@ -5469,7 +5469,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return;
             }
 
-            var inputChannels = audioStream == null ? 6 : audioStream.Channels ?? 6;
+            var inputChannels = audioStream is null ? 6 : audioStream.Channels ?? 6;
             if (inputChannels >= 6)
             {
                 return;
@@ -5521,7 +5521,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private void NormalizeSubtitleEmbed(EncodingJobInfo state)
         {
-            if (state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
+            if (state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
             {
                 return;
             }
@@ -5536,7 +5536,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public string GetSubtitleEmbedArguments(EncodingJobInfo state)
         {
-            if (state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
+            if (state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
             {
                 return string.Empty;
             }
@@ -5617,7 +5617,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (IsCopyCodec(videoCodec))
             {
-                if (state.VideoStream != null
+                if (state.VideoStream is not null
                     && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase)
                     && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
                 {
@@ -5647,7 +5647,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                 args += keyFrameArg;
 
-                var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+                var hasGraphicalSubs = state.SubtitleStream is not null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
 
                 var hasCopyTs = false;
 
@@ -5667,7 +5667,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                     args += " -avoid_negative_ts disabled";
 
-                    if (!(state.SubtitleStream != null && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream))
+                    if (!(state.SubtitleStream is not null && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream))
                     {
                         args += " -start_at_zero";
                     }
@@ -5694,7 +5694,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public string GetProgressiveVideoAudioArguments(EncodingJobInfo state, EncodingOptions encodingOptions)
         {
             // If the video doesn't have an audio stream, return a default.
-            if (state.AudioStream == null && state.VideoStream != null)
+            if (state.AudioStream is null && state.VideoStream is not null)
             {
                 return string.Empty;
             }
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs b/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
index c9625cf1da..179cabc84a 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
@@ -40,7 +40,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 if (!_transcodeReasons.HasValue)
                 {
-                    if (BaseRequest.TranscodeReasons == null)
+                    if (BaseRequest.TranscodeReasons is null)
                     {
                         _transcodeReasons = 0;
                         return 0;
@@ -147,7 +147,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (VideoStream != null && VideoStream.Width.HasValue && VideoStream.Height.HasValue)
+                if (VideoStream is not null && VideoStream.Width.HasValue && VideoStream.Height.HasValue)
                 {
                     var size = new ImageDimensions(VideoStream.Width.Value, VideoStream.Height.Value);
 
@@ -174,7 +174,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (VideoStream != null && VideoStream.Width.HasValue && VideoStream.Height.HasValue)
+                if (VideoStream is not null && VideoStream.Width.HasValue && VideoStream.Height.HasValue)
                 {
                     var size = new ImageDimensions(VideoStream.Width.Value, VideoStream.Height.Value);
 
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 if (BaseRequest.Static
                     || EncodingHelper.IsCopyCodec(OutputAudioCodec))
                 {
-                    if (AudioStream != null)
+                    if (AudioStream is not null)
                     {
                         return AudioStream.SampleRate;
                     }
@@ -227,7 +227,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 if (BaseRequest.Static
                     || EncodingHelper.IsCopyCodec(OutputAudioCodec))
                 {
-                    if (AudioStream != null)
+                    if (AudioStream is not null)
                     {
                         return AudioStream.BitDepth;
                     }
@@ -305,7 +305,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 if (BaseRequest.Static
                     || EncodingHelper.IsCopyCodec(OutputVideoCodec))
                 {
-                    return VideoStream == null ? null : (VideoStream.AverageFrameRate ?? VideoStream.RealFrameRate);
+                    return VideoStream is null ? null : (VideoStream.AverageFrameRate ?? VideoStream.RealFrameRate);
                 }
 
                 return BaseRequest.MaxFramerate ?? BaseRequest.Framerate;
@@ -419,7 +419,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (VideoStream == null)
+                if (VideoStream is null)
                 {
                     return null;
                 }
@@ -437,7 +437,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (AudioStream == null)
+                if (AudioStream is null)
                 {
                     return null;
                 }
@@ -556,7 +556,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public bool DeInterlace(string videoCodec, bool forceDeinterlaceIfSourceIsInterlaced)
         {
             var videoStream = VideoStream;
-            var isInputInterlaced = videoStream != null && videoStream.IsInterlaced;
+            var isInputInterlaced = videoStream is not null && videoStream.IsInterlaced;
 
             if (!isInputInterlaced)
             {
diff --git a/MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs b/MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs
index 2fe3a54723..fc9ea37d1e 100644
--- a/MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs
+++ b/MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs
@@ -166,7 +166,7 @@ namespace MediaBrowser.Controller.Net
 
                 var data = await GetDataToSend().ConfigureAwait(false);
 
-                if (data != null)
+                if (data is not null)
                 {
                     await connection.SendAsync(
                         new WebSocketMessage<TReturnDataType>
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.Net
             {
                 var connection = _activeConnections.FirstOrDefault(c => c.Item1 == message.Connection);
 
-                if (connection != null)
+                if (connection is not null)
                 {
                     DisposeConnection(connection);
                 }
diff --git a/MediaBrowser.Controller/Playlists/Playlist.cs b/MediaBrowser.Controller/Playlists/Playlist.cs
index 7ae9ff7463..e6bcc9ea85 100644
--- a/MediaBrowser.Controller/Playlists/Playlist.cs
+++ b/MediaBrowser.Controller/Playlists/Playlist.cs
@@ -165,7 +165,7 @@ namespace MediaBrowser.Controller.Playlists
 
         public static List<BaseItem> GetPlaylistItems(string playlistMediaType, IEnumerable<BaseItem> inputItems, User user, DtoOptions options)
         {
-            if (user != null)
+            if (user is not null)
             {
                 inputItems = inputItems.Where(i => i.IsVisible(user));
             }
diff --git a/MediaBrowser.Controller/Providers/MetadataRefreshOptions.cs b/MediaBrowser.Controller/Providers/MetadataRefreshOptions.cs
index a38bbaf695..8a37094620 100644
--- a/MediaBrowser.Controller/Providers/MetadataRefreshOptions.cs
+++ b/MediaBrowser.Controller/Providers/MetadataRefreshOptions.cs
@@ -32,7 +32,7 @@ namespace MediaBrowser.Controller.Providers
             SearchResult = copy.SearchResult;
             RemoveOldMetadata = copy.RemoveOldMetadata;
 
-            if (copy.RefreshPaths != null && copy.RefreshPaths.Length > 0)
+            if (copy.RefreshPaths is not null && copy.RefreshPaths.Length > 0)
             {
                 RefreshPaths ??= Array.Empty<string>();
 
@@ -58,7 +58,7 @@ namespace MediaBrowser.Controller.Providers
 
         public bool RefreshItem(BaseItem item)
         {
-            if (RefreshPaths != null && RefreshPaths.Length > 0)
+            if (RefreshPaths is not null && RefreshPaths.Length > 0)
             {
                 return RefreshPaths.Contains(item.Path ?? string.Empty, StringComparison.OrdinalIgnoreCase);
             }
diff --git a/MediaBrowser.Controller/Providers/MetadataResult.cs b/MediaBrowser.Controller/Providers/MetadataResult.cs
index 58a0fa2a9a..952dd48703 100644
--- a/MediaBrowser.Controller/Providers/MetadataResult.cs
+++ b/MediaBrowser.Controller/Providers/MetadataResult.cs
@@ -59,7 +59,7 @@ namespace MediaBrowser.Controller.Providers
         /// </summary>
         public void ResetPeople()
         {
-            if (People == null)
+            if (People is null)
             {
                 People = new List<PersonInfo>();
             }
@@ -83,7 +83,7 @@ namespace MediaBrowser.Controller.Providers
                 }
             }
 
-            if (userData == null)
+            if (userData is null)
             {
                 userData = new UserItemData()
                 {
diff --git a/MediaBrowser.Controller/Resolvers/ItemResolver.cs b/MediaBrowser.Controller/Resolvers/ItemResolver.cs
index e7bf013fa2..a6da8384e8 100644
--- a/MediaBrowser.Controller/Resolvers/ItemResolver.cs
+++ b/MediaBrowser.Controller/Resolvers/ItemResolver.cs
@@ -46,7 +46,7 @@ namespace MediaBrowser.Controller.Resolvers
         {
             var item = Resolve(args);
 
-            if (item != null)
+            if (item is not null)
             {
                 SetInitialItemValues(item, args);
             }
diff --git a/MediaBrowser.Controller/Session/SessionInfo.cs b/MediaBrowser.Controller/Session/SessionInfo.cs
index b4520ae48f..25bf23d61b 100644
--- a/MediaBrowser.Controller/Session/SessionInfo.cs
+++ b/MediaBrowser.Controller/Session/SessionInfo.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null)
+                if (Capabilities is null)
                 {
                     return Array.Empty<string>();
                 }
@@ -182,7 +182,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null || !Capabilities.SupportsMediaControl)
+                if (Capabilities is null || !Capabilities.SupportsMediaControl)
                 {
                     return false;
                 }
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null || !Capabilities.SupportsMediaControl)
+                if (Capabilities is null || !Capabilities.SupportsMediaControl)
                 {
                     return false;
                 }
@@ -239,7 +239,7 @@ namespace MediaBrowser.Controller.Session
         /// </summary>
         /// <value>The supported commands.</value>
         public IReadOnlyList<GeneralCommandType> SupportedCommands
-            => Capabilities == null ? Array.Empty<GeneralCommandType>() : Capabilities.SupportedCommands;
+            => Capabilities is null ? Array.Empty<GeneralCommandType>() : Capabilities.SupportedCommands;
 
         public Tuple<ISessionController, bool> EnsureController<T>(Func<SessionInfo, ISessionController> factory)
         {
@@ -296,7 +296,7 @@ namespace MediaBrowser.Controller.Session
             {
                 _lastProgressInfo = progressInfo;
 
-                if (_progressTimer == null)
+                if (_progressTimer is null)
                 {
                     _progressTimer = new Timer(OnProgressTimerCallback, null, 1000, 1000);
                 }
@@ -315,7 +315,7 @@ namespace MediaBrowser.Controller.Session
             }
 
             var progressInfo = _lastProgressInfo;
-            if (progressInfo == null)
+            if (progressInfo is null)
             {
                 return;
             }
@@ -357,7 +357,7 @@ namespace MediaBrowser.Controller.Session
         {
             lock (_progressLock)
             {
-                if (_progressTimer != null)
+                if (_progressTimer is not null)
                 {
                     _progressTimer.Dispose();
                     _progressTimer = null;
diff --git a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
index 3a7685f347..ddbfeb8de8 100644
--- a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
+++ b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
@@ -180,7 +180,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue
             _shuffledPlaylist.Clear();
             LastChange = DateTime.UtcNow;
 
-            if (!clearPlayingItem && playingItem != null)
+            if (!clearPlayingItem && playingItem is not null)
             {
                 _sortedPlaylist.Add(playingItem);
                 if (ShuffleMode.Equals(GroupShuffleMode.Shuffle))
@@ -298,7 +298,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue
 
             LastChange = DateTime.UtcNow;
 
-            if (playingItem != null)
+            if (playingItem is not null)
             {
                 if (playlistItemIds.Contains(playingItem.PlaylistItemId))
                 {
diff --git a/MediaBrowser.LocalMetadata/BaseXmlProvider.cs b/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
index 9f8e921b4b..548ccee2d4 100644
--- a/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
+++ b/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
@@ -51,7 +51,7 @@ namespace MediaBrowser.LocalMetadata
 
             var file = GetXmlFile(info, directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return Task.FromResult(result);
             }
@@ -98,7 +98,7 @@ namespace MediaBrowser.LocalMetadata
         {
             var file = GetXmlFile(new ItemInfo(item), directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs b/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
index dc13bf4f6d..a8e2946f18 100644
--- a/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
+++ b/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
@@ -32,7 +32,7 @@ namespace MediaBrowser.LocalMetadata.Images
         public IEnumerable<LocalImageInfo> GetImages(BaseItem item, IDirectoryService directoryService)
         {
             var parentPath = Path.GetDirectoryName(item.Path);
-            if (parentPath == null)
+            if (parentPath is null)
             {
                 return Enumerable.Empty<LocalImageInfo>();
             }
diff --git a/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs b/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
index 70fd68129a..894aebed4b 100644
--- a/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
+++ b/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
@@ -94,7 +94,7 @@ namespace MediaBrowser.LocalMetadata.Images
             {
                 var season = item as Season;
                 var series = season?.Series;
-                if (series != null && series.IsFileProtocol)
+                if (series is not null && series.IsFileProtocol)
                 {
                     return true;
                 }
@@ -334,7 +334,7 @@ namespace MediaBrowser.LocalMetadata.Images
             var extraFanartFolder = files
                 .FirstOrDefault(i => string.Equals(i.Name, "extrafanart", StringComparison.OrdinalIgnoreCase));
 
-            if (extraFanartFolder != null)
+            if (extraFanartFolder is not null)
             {
                 PopulateBackdropsFromExtraFanart(extraFanartFolder.FullName, images);
             }
@@ -453,7 +453,7 @@ namespace MediaBrowser.LocalMetadata.Images
         {
             var image = GetImage(files, name, prefix);
 
-            if (image == null)
+            if (image is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.LocalMetadata/Parsers/BaseItemXmlParser.cs b/MediaBrowser.LocalMetadata/Parsers/BaseItemXmlParser.cs
index 92ce14be23..46625c5c8d 100644
--- a/MediaBrowser.LocalMetadata/Parsers/BaseItemXmlParser.cs
+++ b/MediaBrowser.LocalMetadata/Parsers/BaseItemXmlParser.cs
@@ -721,7 +721,7 @@ namespace MediaBrowser.LocalMetadata.Parsers
                             {
                                 var child = GetShare(subReader);
 
-                                if (child != null)
+                                if (child is not null)
                                 {
                                     list.Add(child);
                                 }
diff --git a/MediaBrowser.LocalMetadata/Parsers/BoxSetXmlParser.cs b/MediaBrowser.LocalMetadata/Parsers/BoxSetXmlParser.cs
index 7df800971a..952ed3aacb 100644
--- a/MediaBrowser.LocalMetadata/Parsers/BoxSetXmlParser.cs
+++ b/MediaBrowser.LocalMetadata/Parsers/BoxSetXmlParser.cs
@@ -71,7 +71,7 @@ namespace MediaBrowser.LocalMetadata.Parsers
                                 {
                                     var child = GetLinkedChild(subReader);
 
-                                    if (child != null)
+                                    if (child is not null)
                                     {
                                         list.Add(child);
                                     }
diff --git a/MediaBrowser.LocalMetadata/Parsers/PlaylistXmlParser.cs b/MediaBrowser.LocalMetadata/Parsers/PlaylistXmlParser.cs
index b84307cb20..88b190f2b4 100644
--- a/MediaBrowser.LocalMetadata/Parsers/PlaylistXmlParser.cs
+++ b/MediaBrowser.LocalMetadata/Parsers/PlaylistXmlParser.cs
@@ -84,7 +84,7 @@ namespace MediaBrowser.LocalMetadata.Parsers
                             {
                                 var child = GetLinkedChild(subReader);
 
-                                if (child != null)
+                                if (child is not null)
                                 {
                                     list.Add(child);
                                 }
diff --git a/MediaBrowser.LocalMetadata/Savers/BaseXmlSaver.cs b/MediaBrowser.LocalMetadata/Savers/BaseXmlSaver.cs
index 2d94c5de85..d92b504740 100644
--- a/MediaBrowser.LocalMetadata/Savers/BaseXmlSaver.cs
+++ b/MediaBrowser.LocalMetadata/Savers/BaseXmlSaver.cs
@@ -126,7 +126,7 @@ namespace MediaBrowser.LocalMetadata.Savers
 
                     var baseItem = item;
 
-                    if (baseItem != null)
+                    if (baseItem is not null)
                     {
                         await AddCommonNodesAsync(baseItem, writer).ConfigureAwait(false);
                     }
@@ -309,7 +309,7 @@ namespace MediaBrowser.LocalMetadata.Savers
                 await writer.WriteElementStringAsync(null, "RunningTime", null, Math.Floor(timespan.TotalMinutes).ToString(CultureInfo.InvariantCulture)).ConfigureAwait(false);
             }
 
-            if (item.ProviderIds != null)
+            if (item.ProviderIds is not null)
             {
                 foreach (var providerKey in item.ProviderIds.Keys)
                 {
diff --git a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
index 22abf93ac3..0ee2bdd380 100644
--- a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
+++ b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
@@ -62,14 +62,14 @@ namespace MediaBrowser.MediaEncoding.Attachments
             var mediaSources = await _mediaSourceManager.GetPlaybackMediaSources(item, null, true, false, cancellationToken).ConfigureAwait(false);
             var mediaSource = mediaSources
                 .FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
-            if (mediaSource == null)
+            if (mediaSource is null)
             {
                 throw new ResourceNotFoundException($"MediaSource {mediaSourceId} not found");
             }
 
             var mediaAttachment = mediaSource.MediaAttachments
                 .FirstOrDefault(i => i.Index == attachmentStreamIndex);
-            if (mediaAttachment == null)
+            if (mediaAttachment is null)
             {
                 throw new ResourceNotFoundException($"MediaSource {mediaSourceId} has no attachment with stream index {attachmentStreamIndex}");
             }
diff --git a/MediaBrowser.MediaEncoding/BdInfo/BdInfoDirectoryInfo.cs b/MediaBrowser.MediaEncoding/BdInfo/BdInfoDirectoryInfo.cs
index 409379c355..7e026b42e3 100644
--- a/MediaBrowser.MediaEncoding/BdInfo/BdInfoDirectoryInfo.cs
+++ b/MediaBrowser.MediaEncoding/BdInfo/BdInfoDirectoryInfo.cs
@@ -34,7 +34,7 @@ namespace MediaBrowser.MediaEncoding.BdInfo
             get
             {
                 var parentFolder = System.IO.Path.GetDirectoryName(_impl.FullName);
-                if (parentFolder != null)
+                if (parentFolder is not null)
                 {
                     return new BdInfoDirectoryInfo(_fileSystem, parentFolder);
                 }
diff --git a/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs b/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
index 6ebaa4fff0..3e53cbf29f 100644
--- a/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
+++ b/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
@@ -48,7 +48,7 @@ namespace MediaBrowser.MediaEncoding.BdInfo
                 MediaStreams = Array.Empty<MediaStream>()
             };
 
-            if (playlist == null)
+            if (playlist is null)
             {
                 return outputStream;
             }
@@ -89,7 +89,7 @@ namespace MediaBrowser.MediaEncoding.BdInfo
 
             outputStream.PlaylistName = playlist.Name;
 
-            if (playlist.StreamClips != null && playlist.StreamClips.Any())
+            if (playlist.StreamClips is not null && playlist.StreamClips.Any())
             {
                 // Get the files in the playlist
                 outputStream.Files = playlist.StreamClips.Select(i => i.StreamFile.Name).ToArray();
diff --git a/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs b/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
index 8c8fc6b0f8..8479b7d50d 100644
--- a/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
@@ -188,11 +188,11 @@ namespace MediaBrowser.MediaEncoding.Encoder
             // Work out what the version under test is
             var version = GetFFmpegVersionInternal(versionOutput);
 
-            _logger.LogInformation("Found ffmpeg version {Version}", version != null ? version.ToString() : "unknown");
+            _logger.LogInformation("Found ffmpeg version {Version}", version is not null ? version.ToString() : "unknown");
 
-            if (version == null)
+            if (version is null)
             {
-                if (MaxVersion != null) // Version is unknown
+                if (MaxVersion is not null) // Version is unknown
                 {
                     if (MinVersion == MaxVersion)
                     {
@@ -215,7 +215,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
                 _logger.LogWarning("FFmpeg validation: The minimum recommended version is {MinVersion}", MinVersion);
                 return false;
             }
-            else if (MaxVersion != null && version > MaxVersion) // Version is above what we recommend
+            else if (MaxVersion is not null && version > MaxVersion) // Version is above what we recommend
             {
                 _logger.LogWarning("FFmpeg validation: The maximum recommended version is {MaxVersion}", MaxVersion);
                 return false;
diff --git a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
index e50aa679a3..addaea33e3 100644
--- a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
@@ -157,7 +157,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
             _configurationManager.SaveConfiguration("encoding", options);
 
             // Only if mpeg path is set, try and set path to probe
-            if (_ffmpegPath != null)
+            if (_ffmpegPath is not null)
             {
                 // Determine a probe path from the mpeg path
                 _ffprobePath = Regex.Replace(_ffmpegPath, @"[^\/\\]+?(\.[^\/\\\n.]+)?$", @"ffprobe$1");
@@ -531,12 +531,12 @@ namespace MediaBrowser.MediaEncoding.Encoder
                     throw;
                 }
 
-                if (result == null || (result.Streams == null && result.Format == null))
+                if (result is null || (result.Streams is null && result.Format is null))
                 {
                     throw new FfmpegException("ffprobe failed - streams and format are both null.");
                 }
 
-                if (result.Streams != null)
+                if (result.Streams is not null)
                 {
                     // Normalize aspect ratio if invalid
                     foreach (var stream in result.Streams)
@@ -660,7 +660,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
             var filters = new List<string>();
 
             // deinterlace using bwdif algorithm for video stream.
-            if (videoStream != null && videoStream.IsInterlaced)
+            if (videoStream is not null && videoStream.IsInterlaced)
             {
                 filters.Add("bwdif=0:-1:0");
             }
@@ -1017,7 +1017,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
             {
                 if (!_disposed)
                 {
-                    if (Process != null)
+                    if (Process is not null)
                     {
                         Process.Exited -= OnProcessExited;
                         DisposeProcess(Process);
diff --git a/MediaBrowser.MediaEncoding/Probing/FFProbeHelpers.cs b/MediaBrowser.MediaEncoding/Probing/FFProbeHelpers.cs
index 205e84153b..1b5b5262a2 100644
--- a/MediaBrowser.MediaEncoding/Probing/FFProbeHelpers.cs
+++ b/MediaBrowser.MediaEncoding/Probing/FFProbeHelpers.cs
@@ -17,17 +17,17 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             ArgumentNullException.ThrowIfNull(result);
 
-            if (result.Format?.Tags != null)
+            if (result.Format?.Tags is not null)
             {
                 result.Format.Tags = ConvertDictionaryToCaseInsensitive(result.Format.Tags);
             }
 
-            if (result.Streams != null)
+            if (result.Streams is not null)
             {
                 // Convert all dictionaries to case insensitive
                 foreach (var stream in result.Streams)
                 {
-                    if (stream.Tags != null)
+                    if (stream.Tags is not null)
                     {
                         stream.Tags = ConvertDictionaryToCaseInsensitive(stream.Tags);
                     }
diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index 417f1520f7..7a3462b970 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -83,16 +83,16 @@ namespace MediaBrowser.MediaEncoding.Probing
             var internalStreams = data.Streams ?? Array.Empty<MediaStreamInfo>();
 
             info.MediaStreams = internalStreams.Select(s => GetMediaStream(isAudio, s, data.Format))
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 // Drop subtitle streams if we don't know the codec because it will just cause failures if we don't know how to handle them
                 .Where(i => i.Type != MediaStreamType.Subtitle || !string.IsNullOrWhiteSpace(i.Codec))
                 .ToList();
 
             info.MediaAttachments = internalStreams.Select(GetMediaAttachment)
-                .Where(i => i != null)
+                .Where(i => i is not null)
                 .ToList();
 
-            if (data.Format != null)
+            if (data.Format is not null)
             {
                 info.Container = NormalizeFormat(data.Format.FormatName);
 
@@ -110,7 +110,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
             var tagStream = data.Streams?.FirstOrDefault(i => string.Equals(i.CodecType, tagStreamType, StringComparison.OrdinalIgnoreCase));
 
-            if (tagStream?.Tags != null)
+            if (tagStream?.Tags is not null)
             {
                 foreach (var (key, value) in tagStream.Tags)
                 {
@@ -118,7 +118,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 }
             }
 
-            if (data.Format?.Tags != null)
+            if (data.Format?.Tags is not null)
             {
                 foreach (var (key, value) in data.Format.Tags)
                 {
@@ -156,7 +156,7 @@ namespace MediaBrowser.MediaEncoding.Probing
             else
             {
                 var artist = tags.GetFirstNotNullNorWhiteSpaceValue("artist");
-                info.Artists = artist == null
+                info.Artists = artist is null
                     ? Array.Empty<string>()
                     : SplitDistinctArtists(artist, _nameDelimiters, true).ToArray();
             }
@@ -182,7 +182,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 FetchStudios(info, tags, "copyright");
 
                 var iTunExtc = tags.GetFirstNotNullNorWhiteSpaceValue("iTunEXTC");
-                if (iTunExtc != null)
+                if (iTunExtc is not null)
                 {
                     var parts = iTunExtc.Split('|', StringSplitOptions.RemoveEmptyEntries);
                     // Example
@@ -199,19 +199,19 @@ namespace MediaBrowser.MediaEncoding.Probing
                 }
 
                 var iTunXml = tags.GetFirstNotNullNorWhiteSpaceValue("iTunMOVI");
-                if (iTunXml != null)
+                if (iTunXml is not null)
                 {
                     FetchFromItunesInfo(iTunXml, info);
                 }
 
-                if (data.Format != null && !string.IsNullOrEmpty(data.Format.Duration))
+                if (data.Format is not null && !string.IsNullOrEmpty(data.Format.Duration))
                 {
                     info.RunTimeTicks = TimeSpan.FromSeconds(double.Parse(data.Format.Duration, CultureInfo.InvariantCulture)).Ticks;
                 }
 
                 FetchWtvInfo(info, data);
 
-                if (data.Chapters != null)
+                if (data.Chapters is not null)
                 {
                     info.Chapters = data.Chapters.Select(GetChapterInfo).ToArray();
                 }
@@ -459,7 +459,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                             using (var subtree = reader.ReadSubtree())
                             {
                                 var dict = GetNameValuePair(subtree);
-                                if (dict != null)
+                                if (dict is not null)
                                 {
                                     pairs.Add(dict);
                                 }
@@ -614,7 +614,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 attachment.CodecTag = streamInfo.CodecTagString;
             }
 
-            if (streamInfo.Tags != null)
+            if (streamInfo.Tags is not null)
             {
                 attachment.FileName = GetDictionaryValue(streamInfo.Tags, "filename");
                 attachment.MimeType = GetDictionaryValue(streamInfo.Tags, "mimetype");
@@ -680,7 +680,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 stream.CodecTag = streamInfo.CodecTagString;
             }
 
-            if (streamInfo.Tags != null)
+            if (streamInfo.Tags is not null)
             {
                 stream.Language = GetDictionaryValue(streamInfo.Tags, "language");
                 stream.Comment = GetDictionaryValue(streamInfo.Tags, "comment");
@@ -855,7 +855,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                     stream.ColorPrimaries = streamInfo.ColorPrimaries;
                 }
 
-                if (streamInfo.SideDataList != null)
+                if (streamInfo.SideDataList is not null)
                 {
                     foreach (var data in streamInfo.SideDataList)
                     {
@@ -899,7 +899,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
             // The bitrate info of FLAC musics and some videos is included in formatInfo.
             if (bitrate == 0
-                && formatInfo != null
+                && formatInfo is not null
                 && !string.IsNullOrEmpty(formatInfo.BitRate)
                 && (stream.Type == MediaStreamType.Video || (isAudio && stream.Type == MediaStreamType.Audio)))
             {
@@ -934,7 +934,7 @@ namespace MediaBrowser.MediaEncoding.Probing
             {
                 var durationInSeconds = GetRuntimeSecondsFromTags(streamInfo);
                 var bytes = GetNumberOfBytesFromTags(streamInfo);
-                if (durationInSeconds != null && bytes != null)
+                if (durationInSeconds is not null && bytes is not null)
                 {
                     var bps = Convert.ToInt32(bytes * 8 / durationInSeconds, CultureInfo.InvariantCulture);
                     if (bps > 0)
@@ -945,7 +945,7 @@ namespace MediaBrowser.MediaEncoding.Probing
             }
 
             var disposition = streamInfo.Disposition;
-            if (disposition != null)
+            if (disposition is not null)
             {
                 if (disposition.GetValueOrDefault("default") == 1)
                 {
@@ -989,7 +989,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         /// <returns>System.String.</returns>
         private string GetDictionaryValue(IReadOnlyDictionary<string, string> tags, string key)
         {
-            if (tags == null)
+            if (tags is null)
             {
                 return null;
             }
@@ -1121,7 +1121,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             // Get the first info stream
             var stream = result.Streams?.FirstOrDefault(s => string.Equals(s.CodecType, "audio", StringComparison.OrdinalIgnoreCase));
-            if (stream == null)
+            if (stream is null)
             {
                 return;
             }
@@ -1144,7 +1144,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private int? GetBPSFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1161,7 +1161,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private double? GetRuntimeSecondsFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1177,7 +1177,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private long? GetNumberOfBytesFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1195,7 +1195,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private void SetSize(InternalMediaInfoResult data, MediaInfo info)
         {
-            if (data.Format == null)
+            if (data.Format is null)
             {
                 return;
             }
@@ -1294,7 +1294,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
             // Set album artist
             var albumArtist = tags.GetFirstNotNullNorWhiteSpaceValue("albumartist", "album artist", "album_artist");
-            audio.AlbumArtists = albumArtist != null
+            audio.AlbumArtists = albumArtist is not null
                 ? SplitDistinctArtists(albumArtist, _nameDelimiters, true).ToArray()
                 : Array.Empty<string>();
 
@@ -1489,7 +1489,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             var info = new ChapterInfo();
 
-            if (chapter.Tags != null && chapter.Tags.TryGetValue("title", out string name))
+            if (chapter.Tags is not null && chapter.Tags.TryGetValue("title", out string name))
             {
                 info.Name = name;
             }
@@ -1510,7 +1510,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             var tags = data.Format?.Tags;
 
-            if (tags == null)
+            if (tags is null)
             {
                 return;
             }
diff --git a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
index 9185faf67b..4bc329a8a5 100644
--- a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
@@ -174,7 +174,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles
                     var result = CharsetDetector.DetectFromStream(stream).Detected;
                     stream.Position = 0;
 
-                    if (result != null)
+                    if (result is not null)
                     {
                         _logger.LogDebug("charset {CharSet} detected for {Path}", result.EncodingName, fileInfo.Path);
 
diff --git a/MediaBrowser.Model/Dlna/AudioOptions.cs b/MediaBrowser.Model/Dlna/AudioOptions.cs
index 33755e7462..df4018fdd5 100644
--- a/MediaBrowser.Model/Dlna/AudioOptions.cs
+++ b/MediaBrowser.Model/Dlna/AudioOptions.cs
@@ -77,7 +77,7 @@ namespace MediaBrowser.Model.Dlna
                 return MaxBitrate;
             }
 
-            if (Profile == null)
+            if (Profile is null)
             {
                 return null;
             }
diff --git a/MediaBrowser.Model/Dlna/ContainerProfile.cs b/MediaBrowser.Model/Dlna/ContainerProfile.cs
index c6befdd857..927df8e4ef 100644
--- a/MediaBrowser.Model/Dlna/ContainerProfile.cs
+++ b/MediaBrowser.Model/Dlna/ContainerProfile.cs
@@ -36,7 +36,7 @@ namespace MediaBrowser.Model.Dlna
         public static bool ContainsContainer(string? profileContainers, string? inputContainer)
         {
             var isNegativeList = false;
-            if (profileContainers != null && profileContainers.StartsWith('-'))
+            if (profileContainers is not null && profileContainers.StartsWith('-'))
             {
                 isNegativeList = true;
                 profileContainers = profileContainers.Substring(1);
@@ -52,7 +52,7 @@ namespace MediaBrowser.Model.Dlna
 
         public static bool ContainsContainer(string[]? profileContainers, bool isNegativeList, string? inputContainer)
         {
-            if (profileContainers == null || profileContainers.Length == 0)
+            if (profileContainers is null || profileContainers.Length == 0)
             {
                 // Empty profiles always support all containers/codecs
                 return true;
diff --git a/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs b/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
index 1a95763610..1d5d0b1de3 100644
--- a/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
+++ b/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
@@ -192,7 +192,7 @@ namespace MediaBrowser.Model.Dlna
 
             var orgPnValues = new List<string>();
 
-            if (mediaProfile != null && !string.IsNullOrEmpty(mediaProfile.OrgPn))
+            if (mediaProfile is not null && !string.IsNullOrEmpty(mediaProfile.OrgPn))
             {
                 orgPnValues.AddRange(mediaProfile.OrgPn.Split(',', StringSplitOptions.RemoveEmptyEntries));
             }
diff --git a/MediaBrowser.Model/Dlna/ResolutionNormalizer.cs b/MediaBrowser.Model/Dlna/ResolutionNormalizer.cs
index 94071b4196..ce422a2288 100644
--- a/MediaBrowser.Model/Dlna/ResolutionNormalizer.cs
+++ b/MediaBrowser.Model/Dlna/ResolutionNormalizer.cs
@@ -39,7 +39,7 @@ namespace MediaBrowser.Model.Dlna
             }
 
             var resolutionConfig = GetResolutionConfiguration(outputBitrate);
-            if (resolutionConfig != null)
+            if (resolutionConfig is not null)
             {
                 var originvalValue = maxWidth;
 
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 6e9b943f74..a004edc6a8 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -53,7 +53,7 @@ namespace MediaBrowser.Model.Dlna
             foreach (MediaSourceInfo i in mediaSources)
             {
                 StreamInfo streamInfo = BuildAudioItem(i, options);
-                if (streamInfo != null)
+                if (streamInfo is not null)
                 {
                     streams.Add(streamInfo);
                 }
@@ -86,7 +86,7 @@ namespace MediaBrowser.Model.Dlna
             foreach (MediaSourceInfo i in mediaSources)
             {
                 var streamInfo = BuildVideoItem(i, options);
-                if (streamInfo != null)
+                if (streamInfo is not null)
                 {
                     streams.Add(streamInfo);
                 }
@@ -245,9 +245,9 @@ namespace MediaBrowser.Model.Dlna
 
             var formats = ContainerProfile.SplitValue(inputContainer);
 
-            if (profile != null)
+            if (profile is not null)
             {
-                var playProfiles = playProfile == null ? profile.DirectPlayProfiles : new[] { playProfile };
+                var playProfiles = playProfile is null ? profile.DirectPlayProfiles : new[] { playProfile };
                 foreach (var format in formats)
                 {
                     foreach (var directPlayProfile in playProfiles)
@@ -330,7 +330,7 @@ namespace MediaBrowser.Model.Dlna
                 }
             }
 
-            if (transcodingProfile != null)
+            if (transcodingProfile is not null)
             {
                 if (!item.SupportsTranscoding)
                 {
@@ -370,7 +370,7 @@ namespace MediaBrowser.Model.Dlna
             var directPlayProfile = options.Profile.DirectPlayProfiles
                 .FirstOrDefault(x => x.Type == DlnaProfileType.Audio && IsAudioDirectPlaySupported(x, item, audioStream));
 
-            if (directPlayProfile == null)
+            if (directPlayProfile is null)
             {
                 _logger.LogDebug(
                     "Profile: {0}, No audio direct play profiles found for {1} with codec {2}",
@@ -422,7 +422,7 @@ namespace MediaBrowser.Model.Dlna
 
         private static TranscodeReason GetTranscodeReasonsFromDirectPlayProfile(MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream, IEnumerable<DirectPlayProfile> directPlayProfiles)
         {
-            var mediaType = videoStream == null ? DlnaProfileType.Audio : DlnaProfileType.Video;
+            var mediaType = videoStream is null ? DlnaProfileType.Audio : DlnaProfileType.Video;
 
             var containerSupported = false;
             var audioSupported = false;
@@ -436,9 +436,9 @@ namespace MediaBrowser.Model.Dlna
                 {
                     containerSupported = true;
 
-                    videoSupported = videoStream == null || profile.SupportsVideoCodec(videoStream.Codec);
+                    videoSupported = videoStream is null || profile.SupportsVideoCodec(videoStream.Codec);
 
-                    audioSupported = audioStream == null || profile.SupportsAudioCodec(audioStream.Codec);
+                    audioSupported = audioStream is null || profile.SupportsAudioCodec(audioStream.Codec);
 
                     if (videoSupported && audioSupported)
                     {
@@ -580,13 +580,13 @@ namespace MediaBrowser.Model.Dlna
             var subtitleStream = playlistItem.SubtitleStreamIndex.HasValue ? item.GetMediaStream(MediaStreamType.Subtitle, playlistItem.SubtitleStreamIndex.Value) : null;
 
             var audioStream = item.GetDefaultAudioStream(options.AudioStreamIndex ?? item.DefaultAudioStreamIndex);
-            if (audioStream != null)
+            if (audioStream is not null)
             {
                 playlistItem.AudioStreamIndex = audioStream.Index;
             }
 
             // Collect candidate audio streams
-            ICollection<MediaStream> candidateAudioStreams = audioStream == null ? Array.Empty<MediaStream>() : new[] { audioStream };
+            ICollection<MediaStream> candidateAudioStreams = audioStream is null ? Array.Empty<MediaStream>() : new[] { audioStream };
             if (!options.AudioStreamIndex.HasValue || options.AudioStreamIndex < 0)
             {
                 if (audioStream?.IsDefault == true)
@@ -643,7 +643,7 @@ namespace MediaBrowser.Model.Dlna
                     else if (directPlay == PlayMethod.DirectStream)
                     {
                         playlistItem.AudioStreamIndex = audioStream?.Index;
-                        if (audioStream != null)
+                        if (audioStream is not null)
                         {
                             playlistItem.AudioCodecs = ContainerProfile.SplitValue(directPlayProfile.AudioCodec);
                         }
@@ -652,7 +652,7 @@ namespace MediaBrowser.Model.Dlna
                         BuildStreamVideoItem(playlistItem, options, item, videoStream, audioStream, candidateAudioStreams, directPlayProfile.Container, directPlayProfile.VideoCodec, directPlayProfile.AudioCodec);
                     }
 
-                    if (subtitleStream != null)
+                    if (subtitleStream is not null)
                     {
                         var subtitleProfile = GetSubtitleProfile(item, subtitleStream, options.Profile.SubtitleProfiles, directPlay.Value, _transcoderSupport, directPlayProfile.Container, null);
 
@@ -678,7 +678,7 @@ namespace MediaBrowser.Model.Dlna
                 // Can't direct play, find the transcoding profile
                 // If we do this for direct-stream we will overwrite the info
                 var transcodingProfile = GetVideoTranscodeProfile(item, options, videoStream, audioStream, candidateAudioStreams, subtitleStream, playlistItem);
-                if (transcodingProfile != null)
+                if (transcodingProfile is not null)
                 {
                     SetStreamInfoOptionsFromTranscodingProfile(item, playlistItem, transcodingProfile);
 
@@ -686,7 +686,7 @@ namespace MediaBrowser.Model.Dlna
 
                     playlistItem.PlayMethod = PlayMethod.Transcode;
 
-                    if (subtitleStream != null)
+                    if (subtitleStream is not null)
                     {
                         var subtitleProfile = GetSubtitleProfile(item, subtitleStream, options.Profile.SubtitleProfiles, PlayMethod.Transcode, _transcoderSupport, transcodingProfile.Container, transcodingProfile.Protocol);
 
@@ -729,8 +729,8 @@ namespace MediaBrowser.Model.Dlna
             if (options.AllowVideoStreamCopy)
             {
                 // prefer direct copy profile
-                float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
-                TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
+                float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+                TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : item.Timestamp;
                 int? numAudioStreams = item.GetStreamCount(MediaStreamType.Audio);
                 int? numVideoStreams = item.GetStreamCount(MediaStreamType.Video);
 
@@ -768,7 +768,7 @@ namespace MediaBrowser.Model.Dlna
             // Prefer matching video codecs
             var videoCodecs = ContainerProfile.SplitValue(videoCodec);
             var directVideoCodec = ContainerProfile.ContainsContainer(videoCodecs, videoStream?.Codec) ? videoStream?.Codec : null;
-            if (directVideoCodec != null)
+            if (directVideoCodec is not null)
             {
                 // merge directVideoCodec to videoCodecs
                 Array.Resize(ref videoCodecs, videoCodecs.Length + 1);
@@ -780,12 +780,12 @@ namespace MediaBrowser.Model.Dlna
             // Copy video codec options as a starting point, this applies to transcode and direct-stream
             playlistItem.MaxFramerate = videoStream?.AverageFrameRate;
             var qualifier = videoStream?.Codec;
-            if (videoStream?.Level != null)
+            if (videoStream?.Level is not null)
             {
                 playlistItem.SetOption(qualifier, "level", videoStream.Level.Value.ToString(CultureInfo.InvariantCulture));
             }
 
-            if (videoStream?.BitDepth != null)
+            if (videoStream?.BitDepth is not null)
             {
                 playlistItem.SetOption(qualifier, "videobitdepth", videoStream.BitDepth.Value.ToString(CultureInfo.InvariantCulture));
             }
@@ -795,7 +795,7 @@ namespace MediaBrowser.Model.Dlna
                 playlistItem.SetOption(qualifier, "profile", videoStream.Profile.ToLowerInvariant());
             }
 
-            if (videoStream != null && videoStream.Level != 0)
+            if (videoStream is not null && videoStream.Level != 0)
             {
                 playlistItem.SetOption(qualifier, "level", videoStream.Level.ToString());
             }
@@ -804,7 +804,7 @@ namespace MediaBrowser.Model.Dlna
             var audioCodecs = ContainerProfile.SplitValue(audioCodec);
             var directAudioStream = candidateAudioStreams.FirstOrDefault(stream => ContainerProfile.ContainsContainer(audioCodecs, stream.Codec));
             playlistItem.AudioCodecs = audioCodecs;
-            if (directAudioStream != null)
+            if (directAudioStream is not null)
             {
                 audioStream = directAudioStream;
                 playlistItem.AudioStreamIndex = audioStream.Index;
@@ -832,13 +832,13 @@ namespace MediaBrowser.Model.Dlna
             double? videoLevel = videoStream?.Level;
             string videoProfile = videoStream?.Profile;
             string videoRangeType = videoStream?.VideoRangeType;
-            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+            float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
             bool? isAnamorphic = videoStream?.IsAnamorphic;
             bool? isInterlaced = videoStream?.IsInterlaced;
             string videoCodecTag = videoStream?.CodecTag;
             bool? isAvc = videoStream?.IsAVC;
 
-            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
+            TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : item.Timestamp;
             int? packetLength = videoStream?.PacketLength;
             int? refFrames = videoStream?.RefFrames;
 
@@ -870,12 +870,12 @@ namespace MediaBrowser.Model.Dlna
             int audioBitrate = GetAudioBitrate(options.GetMaxBitrate(false) ?? 0, playlistItem.TargetAudioCodec, audioStream, playlistItem);
             playlistItem.AudioBitrate = Math.Min(playlistItem.AudioBitrate ?? audioBitrate, audioBitrate);
 
-            bool? isSecondaryAudio = audioStream == null ? null : item.IsSecondaryAudio(audioStream);
-            int? inputAudioBitrate = audioStream == null ? null : audioStream.BitRate;
-            int? audioChannels = audioStream == null ? null : audioStream.Channels;
-            string audioProfile = audioStream == null ? null : audioStream.Profile;
-            int? inputAudioSampleRate = audioStream == null ? null : audioStream.SampleRate;
-            int? inputAudioBitDepth = audioStream == null ? null : audioStream.BitDepth;
+            bool? isSecondaryAudio = audioStream is null ? null : item.IsSecondaryAudio(audioStream);
+            int? inputAudioBitrate = audioStream is null ? null : audioStream.BitRate;
+            int? audioChannels = audioStream is null ? null : audioStream.Channels;
+            string audioProfile = audioStream is null ? null : audioStream.Profile;
+            int? inputAudioSampleRate = audioStream is null ? null : audioStream.SampleRate;
+            int? inputAudioBitDepth = audioStream is null ? null : audioStream.BitDepth;
 
             var appliedAudioConditions = options.Profile.CodecProfiles
                 .Where(i => i.Type == CodecType.VideoAudio &&
@@ -965,7 +965,7 @@ namespace MediaBrowser.Model.Dlna
             int defaultBitrate;
             int encoderAudioBitrateLimit = int.MaxValue;
 
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 defaultBitrate = 192000;
             }
@@ -982,7 +982,7 @@ namespace MediaBrowser.Model.Dlna
                          && audioStream.Channels.HasValue
                          && audioStream.Channels.Value <= targetAudioChannels.Value
                          && !string.IsNullOrEmpty(audioStream.Codec)
-                         && targetAudioCodecs != null
+                         && targetAudioCodecs is not null
                          && targetAudioCodecs.Length > 0
                          && !Array.Exists(targetAudioCodecs, elem => string.Equals(audioStream.Codec, elem, StringComparison.OrdinalIgnoreCase)))
                 {
@@ -1080,13 +1080,13 @@ namespace MediaBrowser.Model.Dlna
             double? videoLevel = videoStream?.Level;
             string videoProfile = videoStream?.Profile;
             string videoRangeType = videoStream?.VideoRangeType;
-            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+            float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
             bool? isAnamorphic = videoStream?.IsAnamorphic;
             bool? isInterlaced = videoStream?.IsInterlaced;
             string videoCodecTag = videoStream?.CodecTag;
             bool? isAvc = videoStream?.IsAVC;
 
-            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
+            TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
             int? packetLength = videoStream?.PacketLength;
             int? refFrames = videoStream?.RefFrames;
 
@@ -1119,7 +1119,7 @@ namespace MediaBrowser.Model.Dlna
             var audioStreamMatches = candidateAudioStreams.ToDictionary(s => s, audioStream => CheckVideoAudioStreamDirectPlay(options, mediaSource, container, audioStream));
 
             TranscodeReason subtitleProfileReasons = 0;
-            if (subtitleStream != null)
+            if (subtitleStream is not null)
             {
                 var subtitleProfile = GetSubtitleProfile(mediaSource, subtitleStream, options.Profile.SubtitleProfiles, PlayMethod.DirectPlay, _transcoderSupport, container, null);
 
@@ -1177,7 +1177,7 @@ namespace MediaBrowser.Model.Dlna
                     if (candidateAudioStreams.Any())
                     {
                         selectedAudioStream = candidateAudioStreams.FirstOrDefault(audioStream => directPlayProfile.SupportsAudioCodec(audioStream.Codec));
-                        if (selectedAudioStream == null)
+                        if (selectedAudioStream is null)
                         {
                             directPlayProfileReasons |= TranscodeReason.AudioCodecNotSupported;
                         }
@@ -1206,7 +1206,7 @@ namespace MediaBrowser.Model.Dlna
                     {
                         playMethod = PlayMethod.DirectPlay;
                     }
-                    else if (directStreamFailureReasons == 0 && isEligibleForDirectStream && mediaSource.SupportsDirectStream && directPlayProfile != null)
+                    else if (directStreamFailureReasons == 0 && isEligibleForDirectStream && mediaSource.SupportsDirectStream && directPlayProfile is not null)
                     {
                         playMethod = PlayMethod.DirectStream;
                     }
@@ -1218,12 +1218,12 @@ namespace MediaBrowser.Model.Dlna
                 .ThenByDescending(analysis => analysis.Rank)
                 .ThenBy(analysis => analysis.Order)
                 .ToArray()
-                .ToLookup(analysis => analysis.Result.PlayMethod != null);
+                .ToLookup(analysis => analysis.Result.PlayMethod is not null);
 
             var profileMatch = analyzedProfiles[true]
                 .Select(analysis => analysis.Result)
                 .FirstOrDefault();
-            if (profileMatch.Profile != null)
+            if (profileMatch.Profile is not null)
             {
                 return profileMatch;
             }
@@ -1501,12 +1501,12 @@ namespace MediaBrowser.Model.Dlna
                 throw new ArgumentException("DeviceId is required");
             }
 
-            if (options.Profile == null)
+            if (options.Profile is null)
             {
                 throw new ArgumentException("Profile is required");
             }
 
-            if (options.MediaSources == null)
+            if (options.MediaSources is null)
             {
                 throw new ArgumentException("MediaSources is required");
             }
diff --git a/MediaBrowser.Model/Dlna/StreamInfo.cs b/MediaBrowser.Model/Dlna/StreamInfo.cs
index 5cfa2e7e3c..9e0536c733 100644
--- a/MediaBrowser.Model/Dlna/StreamInfo.cs
+++ b/MediaBrowser.Model/Dlna/StreamInfo.cs
@@ -215,7 +215,7 @@ namespace MediaBrowser.Model.Dlna
                 var stream = TargetVideoStream;
                 return MaxFramerate.HasValue && !IsDirectStream
                     ? MaxFramerate
-                    : stream == null ? null : stream.AverageFrameRate ?? stream.RealFrameRate;
+                    : stream is null ? null : stream.AverageFrameRate ?? stream.RealFrameRate;
             }
         }
 
@@ -460,7 +460,7 @@ namespace MediaBrowser.Model.Dlna
 
                 return !IsDirectStream
                     ? defaultValue
-                    : MediaSource == null ? defaultValue : MediaSource.Timestamp ?? TransportStreamTimestamp.None;
+                    : MediaSource is null ? defaultValue : MediaSource.Timestamp ?? TransportStreamTimestamp.None;
             }
         }
 
@@ -521,7 +521,7 @@ namespace MediaBrowser.Model.Dlna
             {
                 var videoStream = TargetVideoStream;
 
-                if (videoStream != null && videoStream.Width.HasValue && videoStream.Height.HasValue)
+                if (videoStream is not null && videoStream.Width.HasValue && videoStream.Height.HasValue)
                 {
                     ImageDimensions size = new ImageDimensions(videoStream.Width.Value, videoStream.Height.Value);
 
@@ -540,7 +540,7 @@ namespace MediaBrowser.Model.Dlna
             {
                 var videoStream = TargetVideoStream;
 
-                if (videoStream != null && videoStream.Width.HasValue && videoStream.Height.HasValue)
+                if (videoStream is not null && videoStream.Width.HasValue && videoStream.Height.HasValue)
                 {
                     ImageDimensions size = new ImageDimensions(videoStream.Width.Value, videoStream.Height.Value);
 
diff --git a/MediaBrowser.Model/Drawing/DrawingUtils.cs b/MediaBrowser.Model/Drawing/DrawingUtils.cs
index 5567927682..2040d26bbb 100644
--- a/MediaBrowser.Model/Drawing/DrawingUtils.cs
+++ b/MediaBrowser.Model/Drawing/DrawingUtils.cs
@@ -71,18 +71,18 @@ namespace MediaBrowser.Model.Drawing
             int? fillHeight)
         {
             // Return original size if input is invalid.
-            if ((fillWidth == null || fillWidth == 0)
-                && (fillHeight == null || fillHeight == 0))
+            if ((fillWidth is null || fillWidth == 0)
+                && (fillHeight is null || fillHeight == 0))
             {
                 return size;
             }
 
-            if (fillWidth == null || fillWidth == 0)
+            if (fillWidth is null || fillWidth == 0)
             {
                 fillWidth = 1;
             }
 
-            if (fillHeight == null || fillHeight == 0)
+            if (fillHeight is null || fillHeight == 0)
             {
                 fillHeight = 1;
             }
diff --git a/MediaBrowser.Model/Dto/BaseItemPerson.cs b/MediaBrowser.Model/Dto/BaseItemPerson.cs
index 6b920b0efb..9c65a2308d 100644
--- a/MediaBrowser.Model/Dto/BaseItemPerson.cs
+++ b/MediaBrowser.Model/Dto/BaseItemPerson.cs
@@ -52,6 +52,6 @@ namespace MediaBrowser.Model.Dto
         /// </summary>
         /// <value><c>true</c> if this instance has primary image; otherwise, <c>false</c>.</value>
         [JsonIgnore]
-        public bool HasPrimaryImage => PrimaryImageTag != null;
+        public bool HasPrimaryImage => PrimaryImageTag is not null;
     }
 }
diff --git a/MediaBrowser.Model/Dto/MediaSourceInfo.cs b/MediaBrowser.Model/Dto/MediaSourceInfo.cs
index c348e83ae5..520832aeee 100644
--- a/MediaBrowser.Model/Dto/MediaSourceInfo.cs
+++ b/MediaBrowser.Model/Dto/MediaSourceInfo.cs
@@ -134,7 +134,7 @@ namespace MediaBrowser.Model.Dto
 
         public void InferTotalBitrate(bool force = false)
         {
-            if (MediaStreams == null)
+            if (MediaStreams is null)
             {
                 return;
             }
diff --git a/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs b/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
index d3b8400f34..cf453d62cb 100644
--- a/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
+++ b/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.Model.Entities
         {
             ArgumentNullException.ThrowIfNull(instance);
 
-            if (instance.ProviderIds == null)
+            if (instance.ProviderIds is null)
             {
                 id = null;
                 return false;
diff --git a/MediaBrowser.Model/Notifications/NotificationOptions.cs b/MediaBrowser.Model/Notifications/NotificationOptions.cs
index d1b5491bd1..804f51e166 100644
--- a/MediaBrowser.Model/Notifications/NotificationOptions.cs
+++ b/MediaBrowser.Model/Notifications/NotificationOptions.cs
@@ -86,14 +86,14 @@ namespace MediaBrowser.Model.Notifications
         {
             NotificationOption opt = GetOptions(type);
 
-            return opt != null && opt.Enabled;
+            return opt is not null && opt.Enabled;
         }
 
         public bool IsServiceEnabled(string service, string notificationType)
         {
             NotificationOption opt = GetOptions(notificationType);
 
-            return opt == null
+            return opt is null
                    || !opt.DisabledServices.Contains(service, StringComparison.OrdinalIgnoreCase);
         }
 
@@ -101,7 +101,7 @@ namespace MediaBrowser.Model.Notifications
         {
             NotificationOption opt = GetOptions(type);
 
-            return opt != null
+            return opt is not null
                    && opt.Enabled
                    && !opt.DisabledMonitorUsers.Contains(userId.ToString("N"), StringComparison.OrdinalIgnoreCase);
         }
@@ -110,7 +110,7 @@ namespace MediaBrowser.Model.Notifications
         {
             NotificationOption opt = GetOptions(type);
 
-            if (opt != null && opt.Enabled)
+            if (opt is not null && opt.Enabled)
             {
                 if (opt.SendToUserMode == SendToUserType.All)
                 {
diff --git a/MediaBrowser.Model/Updates/VersionInfo.cs b/MediaBrowser.Model/Updates/VersionInfo.cs
index 03a540dde2..320199f984 100644
--- a/MediaBrowser.Model/Updates/VersionInfo.cs
+++ b/MediaBrowser.Model/Updates/VersionInfo.cs
@@ -17,7 +17,7 @@ namespace MediaBrowser.Model.Updates
         [JsonPropertyName("version")]
         public string Version
         {
-            get => _version == null ? string.Empty : _version.ToString();
+            get => _version is null ? string.Empty : _version.ToString();
 
             set => _version = SysVersion.Parse(value);
         }
diff --git a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
index cbbb343e5e..df9d15ec20 100644
--- a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
+++ b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
@@ -66,7 +66,7 @@ namespace MediaBrowser.Providers.BoxSets
             var libraryFolderIds = item.GetLibraryFolderIds();
 
             var itemLibraryFolderIds = item.LibraryFolderIds;
-            if (itemLibraryFolderIds == null || !libraryFolderIds.SequenceEqual(itemLibraryFolderIds))
+            if (itemLibraryFolderIds is null || !libraryFolderIds.SequenceEqual(itemLibraryFolderIds))
             {
                 item.LibraryFolderIds = libraryFolderIds;
                 updatedType |= ItemUpdateType.MetadataImport;
diff --git a/MediaBrowser.Providers/Manager/ImageSaver.cs b/MediaBrowser.Providers/Manager/ImageSaver.cs
index 4632e1d511..2061d384c4 100644
--- a/MediaBrowser.Providers/Manager/ImageSaver.cs
+++ b/MediaBrowser.Providers/Manager/ImageSaver.cs
@@ -108,7 +108,7 @@ namespace MediaBrowser.Providers.Manager
                 {
                     var series = season.Series;
 
-                    if (series != null && series.SupportsLocalMetadata && series.IsSaveLocalMetadataEnabled())
+                    if (series is not null && series.SupportsLocalMetadata && series.IsSaveLocalMetadataEnabled())
                     {
                         saveLocally = true;
                     }
@@ -144,7 +144,7 @@ namespace MediaBrowser.Providers.Manager
             }
 
             var currentImage = GetCurrentImage(item, type, index);
-            var currentImageIsLocalFile = currentImage != null && currentImage.IsLocalFile;
+            var currentImageIsLocalFile = currentImage is not null && currentImage.IsLocalFile;
             var currentImagePath = currentImage?.Path;
 
             var savedPaths = new List<string>();
@@ -374,7 +374,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (type == ImageType.Thumb && saveLocally)
             {
-                if (season != null && season.IndexNumber.HasValue)
+                if (season is not null && season.IndexNumber.HasValue)
                 {
                     var seriesFolder = season.SeriesPath;
 
@@ -397,7 +397,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (type == ImageType.Banner && saveLocally)
             {
-                if (season != null && season.IndexNumber.HasValue)
+                if (season is not null && season.IndexNumber.HasValue)
                 {
                     var seriesFolder = season.SeriesPath;
 
@@ -533,7 +533,7 @@ namespace MediaBrowser.Providers.Manager
                         return new[] { GetSavePathForItemInMixedFolder(item, type, "fanart", extension) };
                     }
 
-                    if (season != null && season.IndexNumber.HasValue)
+                    if (season is not null && season.IndexNumber.HasValue)
                     {
                         var seriesFolder = season.SeriesPath;
 
@@ -576,7 +576,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (type == ImageType.Primary)
             {
-                if (season != null && season.IndexNumber.HasValue)
+                if (season is not null && season.IndexNumber.HasValue)
                 {
                     var seriesFolder = season.SeriesPath;
 
diff --git a/MediaBrowser.Providers/Manager/ItemImageProvider.cs b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
index bbbbfad54a..a0f48840e3 100644
--- a/MediaBrowser.Providers/Manager/ItemImageProvider.cs
+++ b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
@@ -73,7 +73,7 @@ namespace MediaBrowser.Providers.Manager
             for (var i = 0; i < _singularImages.Length; i++)
             {
                 var currentImage = item.GetImageInfo(_singularImages[i], 0);
-                if (currentImage != null)
+                if (currentImage is not null)
                 {
                     singular.Add(currentImage);
                 }
@@ -395,11 +395,11 @@ namespace MediaBrowser.Providers.Manager
                 var type = _singularImages[i];
                 var image = GetFirstLocalImageInfoByType(images, type);
 
-                if (image != null)
+                if (image is not null)
                 {
                     var currentImage = item.GetImageInfo(type, 0);
 
-                    if (currentImage == null || !string.Equals(currentImage.Path, image.FileInfo.FullName, StringComparison.OrdinalIgnoreCase))
+                    if (currentImage is null || !string.Equals(currentImage.Path, image.FileInfo.FullName, StringComparison.OrdinalIgnoreCase))
                     {
                         item.SetImagePath(type, image.FileInfo);
                         changed = true;
@@ -471,7 +471,7 @@ namespace MediaBrowser.Providers.Manager
             CancellationToken cancellationToken)
         {
             var eligibleImages = images
-                .Where(i => i.Type == type && (i.Width == null || i.Width >= minWidth))
+                .Where(i => i.Type == type && (i.Width is null || i.Width >= minWidth))
                 .ToList();
 
             if (EnableImageStub(item) && eligibleImages.Count > 0)
@@ -539,7 +539,7 @@ namespace MediaBrowser.Providers.Manager
             if (item is IItemByName and not MusicArtist)
             {
                 var hasDualAccess = item as IHasDualAccess;
-                if (hasDualAccess == null || hasDualAccess.IsAccessedByName)
+                if (hasDualAccess is null || hasDualAccess.IsAccessedByName)
                 {
                     return true;
                 }
diff --git a/MediaBrowser.Providers/Manager/MetadataService.cs b/MediaBrowser.Providers/Manager/MetadataService.cs
index 0f3f1bdcba..077bb30f4c 100644
--- a/MediaBrowser.Providers/Manager/MetadataService.cs
+++ b/MediaBrowser.Providers/Manager/MetadataService.cs
@@ -146,7 +146,7 @@ namespace MediaBrowser.Providers.Manager
                 {
                     var id = itemOfType.GetLookupInfo();
 
-                    if (refreshOptions.SearchResult != null)
+                    if (refreshOptions.SearchResult is not null)
                     {
                         ApplySearchResult(id, refreshOptions.SearchResult);
                     }
@@ -190,7 +190,7 @@ namespace MediaBrowser.Providers.Manager
                 if (item.IsFileProtocol)
                 {
                     var file = TryGetFile(item.Path, refreshOptions.DirectoryService);
-                    if (file != null)
+                    if (file is not null)
                     {
                         item.DateModified = file.LastWriteTimeUtc;
                     }
@@ -243,7 +243,7 @@ namespace MediaBrowser.Providers.Manager
 
         protected async Task SaveItemAsync(MetadataResult<TItemType> result, ItemUpdateType reason, CancellationToken cancellationToken)
         {
-            if (result.Item.SupportsPeople && result.People != null)
+            if (result.Item.SupportsPeople && result.People is not null)
             {
                 var baseItem = result.Item;
 
@@ -815,7 +815,7 @@ namespace MediaBrowser.Providers.Manager
                 var providerName = provider.GetType().Name;
                 Logger.LogDebug("Running {Provider} for {Item}", providerName, logName);
 
-                if (id != null && !tmpDataMerged)
+                if (id is not null && !tmpDataMerged)
                 {
                     MergeNewData(temp.Item, id);
                     tmpDataMerged = true;
@@ -918,12 +918,12 @@ namespace MediaBrowser.Providers.Manager
             var source = sourceResult.Item;
             var target = targetResult.Item;
 
-            if (source == null)
+            if (source is null)
             {
                 throw new ArgumentException("Item cannot be null.", nameof(sourceResult));
             }
 
-            if (target == null)
+            if (target is null)
             {
                 throw new ArgumentException("Item cannot be null.", nameof(targetResult));
             }
@@ -1005,11 +1005,11 @@ namespace MediaBrowser.Providers.Manager
 
             if (!lockedFields.Contains(MetadataField.Cast))
             {
-                if (replaceData || targetResult.People == null || targetResult.People.Count == 0)
+                if (replaceData || targetResult.People is null || targetResult.People.Count == 0)
                 {
                     targetResult.People = sourceResult.People;
                 }
-                else if (targetResult.People != null && sourceResult.People != null)
+                else if (targetResult.People is not null && sourceResult.People is not null)
                 {
                     MergePeople(sourceResult.People, targetResult.People);
                 }
@@ -1114,7 +1114,7 @@ namespace MediaBrowser.Providers.Manager
                 var normalizedName = person.Name.RemoveDiacritics();
                 var personInSource = source.FirstOrDefault(i => string.Equals(i.Name.RemoveDiacritics(), normalizedName, StringComparison.OrdinalIgnoreCase));
 
-                if (personInSource != null)
+                if (personInSource is not null)
                 {
                     foreach (var providerId in personInSource.ProviderIds)
                     {
@@ -1178,7 +1178,7 @@ namespace MediaBrowser.Providers.Manager
         {
             if (source is Video sourceCast && target is Video targetCast)
             {
-                if (replaceData || targetCast.Video3DFormat == null)
+                if (replaceData || targetCast.Video3DFormat is null)
                 {
                     targetCast.Video3DFormat = sourceCast.Video3DFormat;
                 }
diff --git a/MediaBrowser.Providers/Manager/ProviderManager.cs b/MediaBrowser.Providers/Manager/ProviderManager.cs
index ac4dc1bc31..d3ac2f6cda 100644
--- a/MediaBrowser.Providers/Manager/ProviderManager.cs
+++ b/MediaBrowser.Providers/Manager/ProviderManager.cs
@@ -135,7 +135,7 @@ namespace MediaBrowser.Providers.Manager
             var service = _metadataServices.FirstOrDefault(current => current.CanRefreshPrimary(type));
             service ??= _metadataServices.FirstOrDefault(current => current.CanRefresh(item));
 
-            if (service == null)
+            if (service is null)
             {
                 _logger.LogError("Unable to find a metadata service for item of type {TypeName}", item.GetType().Name);
                 return Task.FromResult(ItemUpdateType.None);
@@ -660,7 +660,7 @@ namespace MediaBrowser.Providers.Manager
 
                 if (!includeDisabled)
                 {
-                    if (libraryOptions.MetadataSavers == null)
+                    if (libraryOptions.MetadataSavers is null)
                     {
                         if (options.DisabledMetadataSavers.Contains(saver.Name, StringComparison.OrdinalIgnoreCase))
                         {
@@ -725,7 +725,7 @@ namespace MediaBrowser.Providers.Manager
         {
             LibraryOptions libraryOptions;
 
-            if (referenceItem == null)
+            if (referenceItem is null)
             {
                 // Give it a dummy path just so that it looks like a file system item
                 var dummy = new TItemType
@@ -776,7 +776,7 @@ namespace MediaBrowser.Providers.Manager
                     {
                         var existingMatch = resultList.FirstOrDefault(i => i.ProviderIds.Any(p => string.Equals(result.GetProviderId(p.Key), p.Value, StringComparison.OrdinalIgnoreCase)));
 
-                        if (existingMatch == null)
+                        if (existingMatch is null)
                         {
                             resultList.Add(result);
                         }
@@ -831,7 +831,7 @@ namespace MediaBrowser.Providers.Manager
         {
             var provider = _metadataProviders.OfType<IRemoteSearchProvider>().FirstOrDefault(i => string.Equals(i.Name, providerName, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ArgumentException("Search provider not found.");
             }
@@ -881,7 +881,7 @@ namespace MediaBrowser.Providers.Manager
                         i.UrlFormatString,
                         value)
                 };
-            }).Where(i => i != null)
+            }).Where(i => i is not null)
                 .Concat(item.GetRelatedUrls())!; // We just filtered out all the nulls
         }
 
@@ -1002,7 +1002,7 @@ namespace MediaBrowser.Providers.Manager
                 try
                 {
                     var item = libraryManager.GetItemById(refreshItem.Item1);
-                    if (item == null)
+                    if (item is null)
                     {
                         continue;
                     }
@@ -1071,7 +1071,7 @@ namespace MediaBrowser.Providers.Manager
 
             var musicArtists = albums
                 .Select(i => i.MusicArtist)
-                .Where(i => i != null);
+                .Where(i => i is not null);
 
             var musicArtistRefreshTasks = musicArtists.Select(i => i.ValidateChildren(new SimpleProgress<double>(), options, true, cancellationToken));
 
diff --git a/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs b/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
index 3699e8f497..74210b1f22 100644
--- a/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
+++ b/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
@@ -149,7 +149,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 tags = file.GetTag(TagTypes.Id3v1);
             }
 
-            if (tags != null)
+            if (tags is not null)
             {
                 if (audio.SupportsPeople && !audio.LockedFields.Contains(MetadataField.Cast))
                 {
diff --git a/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs b/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
index d60d829def..fed23df152 100644
--- a/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
@@ -138,7 +138,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 .FirstOrDefault(attachment => !string.IsNullOrEmpty(attachment.FileName)
                     && imageFileNames.Any(name => attachment.FileName.Contains(name, StringComparison.OrdinalIgnoreCase)));
 
-            if (attachmentStream != null)
+            if (attachmentStream is not null)
             {
                 return await ExtractAttachment(item, attachmentStream, mediaSource, cancellationToken);
             }
@@ -162,7 +162,7 @@ namespace MediaBrowser.Providers.MediaInfo
                     && imageFileNames.Any(name => stream.Comment.Contains(name, StringComparison.OrdinalIgnoreCase)));
 
             // Primary type only: default to first image if none found by label
-            if (imageStream == null)
+            if (imageStream is null)
             {
                 if (type == ImageType.Primary)
                 {
diff --git a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
index 7412a10d02..58b23a36df 100644
--- a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
+++ b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
@@ -180,7 +180,7 @@ namespace MediaBrowser.Providers.MediaInfo
 
             var startIndex = mediaStreams.Count == 0 ? 0 : (mediaStreams.Max(i => i.Index) + 1);
 
-            if (mediaInfo != null)
+            if (mediaInfo is not null)
             {
                 foreach (var mediaStream in mediaInfo.MediaStreams)
                 {
@@ -195,7 +195,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 //    .Replace("matroska", "mkv", StringComparison.OrdinalIgnoreCase);
 
                 // For DVDs this may not always be accurate, so don't set the runtime if the item already has one
-                var needToSetRuntime = video.VideoType != VideoType.Dvd || video.RunTimeTicks == null || video.RunTimeTicks.Value == 0;
+                var needToSetRuntime = video.VideoType != VideoType.Dvd || video.RunTimeTicks is null || video.RunTimeTicks.Value == 0;
 
                 if (needToSetRuntime)
                 {
@@ -218,7 +218,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 video.Container = mediaInfo.Container;
 
                 chapters = mediaInfo.Chapters ?? Array.Empty<ChapterInfo>();
-                if (blurayInfo != null)
+                if (blurayInfo is not null)
                 {
                     FetchBdInfo(video, ref chapters, mediaStreams, blurayInfo);
                 }
@@ -241,7 +241,7 @@ namespace MediaBrowser.Providers.MediaInfo
 
             var libraryOptions = _libraryManager.GetLibraryOptions(video);
 
-            if (mediaInfo != null)
+            if (mediaInfo is not null)
             {
                 FetchEmbeddedInfo(video, mediaInfo, options, libraryOptions);
                 FetchPeople(video, mediaInfo, options);
@@ -288,7 +288,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 NormalizeChapterNames(chapters);
 
                 var extractDuringScan = false;
-                if (libraryOptions != null)
+                if (libraryOptions is not null)
                 {
                     extractDuringScan = libraryOptions.ExtractChapterImagesDuringLibraryScan;
                 }
@@ -333,7 +333,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 var videoStream = mediaStreams.FirstOrDefault(s => s.Type == MediaStreamType.Video);
 
                 // Grab the values that ffprobe recorded
-                if (videoStream != null)
+                if (videoStream is not null)
                 {
                     currentBitRate = videoStream.BitRate;
                     currentWidth = videoStream.Width;
@@ -349,7 +349,7 @@ namespace MediaBrowser.Providers.MediaInfo
                     video.RunTimeTicks = blurayInfo.RunTimeTicks;
                 }
 
-                if (blurayInfo.Chapters != null)
+                if (blurayInfo.Chapters is not null)
                 {
                     double[] brChapter = blurayInfo.Chapters;
                     chapters = new ChapterInfo[brChapter.Length];
@@ -365,7 +365,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 videoStream = mediaStreams.FirstOrDefault(s => s.Type == MediaStreamType.Video);
 
                 // Use the ffprobe values if these are empty
-                if (videoStream != null)
+                if (videoStream is not null)
                 {
                     videoStream.BitRate = IsEmpty(videoStream.BitRate) ? currentBitRate : videoStream.BitRate;
                     videoStream.Width = IsEmpty(videoStream.Width) ? currentWidth : videoStream.Width;
@@ -572,7 +572,7 @@ namespace MediaBrowser.Providers.MediaInfo
             bool requirePerfectMatch;
             bool enabled;
 
-            if (libraryOptions.SubtitleDownloadLanguages == null)
+            if (libraryOptions.SubtitleDownloadLanguages is null)
             {
                 subtitleDownloadLanguages = subtitleOptions.DownloadLanguages;
                 skipIfEmbeddedSubtitlesPresent = subtitleOptions.SkipIfEmbeddedSubtitlesPresent;
@@ -693,7 +693,7 @@ namespace MediaBrowser.Providers.MediaInfo
 
             byte? titleNumber = null;
 
-            if (primaryTitle != null)
+            if (primaryTitle is not null)
             {
                 titleNumber = primaryTitle.VideoTitleSetNumber;
                 item.RunTimeTicks = GetRuntime(primaryTitle);
diff --git a/MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs b/MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs
index bb2d584c10..909cbb9b9c 100644
--- a/MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs
+++ b/MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs
@@ -199,7 +199,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 {
                     var externalPathInfo = _externalPathParser.ParseFile(file, fileNameWithoutExtension[prefix.Length..].ToString());
 
-                    if (externalPathInfo != null)
+                    if (externalPathInfo is not null)
                     {
                         externalPathInfos.Add(externalPathInfo);
                     }
diff --git a/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs b/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
index 75f997a281..2800219552 100644
--- a/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
@@ -108,14 +108,14 @@ namespace MediaBrowser.Providers.MediaInfo
         public bool HasChanged(BaseItem item, IDirectoryService directoryService)
         {
             var video = item as Video;
-            if (video == null || video.VideoType == VideoType.VideoFile || video.VideoType == VideoType.Iso)
+            if (video is null || video.VideoType == VideoType.VideoFile || video.VideoType == VideoType.Iso)
             {
                 var path = item.Path;
 
                 if (!string.IsNullOrWhiteSpace(path) && item.IsFileProtocol)
                 {
                     var file = directoryService.GetFile(path);
-                    if (file != null && file.LastWriteTimeUtc != item.DateModified)
+                    if (file is not null && file.LastWriteTimeUtc != item.DateModified)
                     {
                         _logger.LogDebug("Refreshing {ItemPath} due to date modified timestamp change.", path);
                         return true;
@@ -123,7 +123,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 }
             }
 
-            if (item.SupportsLocalMetadata && video != null && !video.IsPlaceHolder
+            if (item.SupportsLocalMetadata && video is not null && !video.IsPlaceHolder
                 && !video.SubtitleFiles.SequenceEqual(
                     _subtitleResolver.GetExternalFiles(video, directoryService, false)
                     .Select(info => info.Path).ToList(),
@@ -133,7 +133,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 return true;
             }
 
-            if (item.SupportsLocalMetadata && video != null && !video.IsPlaceHolder
+            if (item.SupportsLocalMetadata && video is not null && !video.IsPlaceHolder
                 && !video.AudioFiles.SequenceEqual(
                     _audioResolver.GetExternalFiles(video, directoryService, false)
                     .Select(info => info.Path).ToList(),
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleDownloader.cs b/MediaBrowser.Providers/MediaInfo/SubtitleDownloader.cs
index b2b93940a8..20fb4dab9c 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleDownloader.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleDownloader.cs
@@ -192,7 +192,7 @@ namespace MediaBrowser.Providers.MediaInfo
 
                 var result = searchResults.FirstOrDefault();
 
-                if (result != null)
+                if (result is not null)
                 {
                     await _subtitleManager.DownloadSubtitles(video, result.Id, cancellationToken).ConfigureAwait(false);
 
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
index eb9071a52a..f21939d2a5 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
@@ -80,7 +80,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 bool skipIfEmbeddedSubtitlesPresent;
                 bool skipIfAudioTrackMatches;
 
-                if (libraryOptions.SubtitleDownloadLanguages == null)
+                if (libraryOptions.SubtitleDownloadLanguages is null)
                 {
                     subtitleDownloadLanguages = options.DownloadLanguages;
                     skipIfEmbeddedSubtitlesPresent = options.SkipIfEmbeddedSubtitlesPresent;
@@ -172,7 +172,7 @@ namespace MediaBrowser.Providers.MediaInfo
             bool skipIfAudioTrackMatches;
             bool requirePerfectMatch;
 
-            if (libraryOptions.SubtitleDownloadLanguages == null)
+            if (libraryOptions.SubtitleDownloadLanguages is null)
             {
                 subtitleDownloadLanguages = options.DownloadLanguages;
                 skipIfEmbeddedSubtitlesPresent = options.SkipIfEmbeddedSubtitlesPresent;
diff --git a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
index d4bf629702..ba7ad40727 100644
--- a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
@@ -89,14 +89,14 @@ namespace MediaBrowser.Providers.MediaInfo
 
             var query = new MediaStreamQuery { ItemId = item.Id, Index = item.DefaultVideoStreamIndex };
             var videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 query.Type = MediaStreamType.Video;
                 query.Index = null;
                 videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
             }
 
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 _logger.LogInformation("Skipping image extraction: no video stream found for {Path}.", item.Path ?? string.Empty);
                 return new DynamicImageResponse { HasImage = false };
diff --git a/MediaBrowser.Providers/Playlists/PlaylistItemsProvider.cs b/MediaBrowser.Providers/Playlists/PlaylistItemsProvider.cs
index fe9986d424..db4c5f436e 100644
--- a/MediaBrowser.Providers/Playlists/PlaylistItemsProvider.cs
+++ b/MediaBrowser.Providers/Playlists/PlaylistItemsProvider.cs
@@ -157,7 +157,7 @@ namespace MediaBrowser.Providers.Playlists
             if (!string.IsNullOrWhiteSpace(path) && item.IsFileProtocol)
             {
                 var file = directoryService.GetFile(path);
-                if (file != null && file.LastWriteTimeUtc != item.DateModified)
+                if (file is not null && file.LastWriteTimeUtc != item.DateModified)
                 {
                     _logger.LogDebug("Refreshing {0} due to date modified timestamp change.", path);
                     return true;
diff --git a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumImageProvider.cs b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumImageProvider.cs
index ad0247fb2e..7fb438d8a0 100644
--- a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumImageProvider.cs
@@ -63,7 +63,7 @@ namespace MediaBrowser.Providers.Plugins.AudioDb
                 await using FileStream jsonStream = AsyncFile.OpenRead(path);
                 var obj = await JsonSerializer.DeserializeAsync<AudioDbAlbumProvider.RootObject>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
 
-                if (obj != null && obj.album != null && obj.album.Count > 0)
+                if (obj is not null && obj.album is not null && obj.album.Count > 0)
                 {
                     return GetImages(obj.album[0]);
                 }
diff --git a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumProvider.cs b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumProvider.cs
index 43f30824b8..b92f1f59f7 100644
--- a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumProvider.cs
+++ b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbAlbumProvider.cs
@@ -71,7 +71,7 @@ namespace MediaBrowser.Providers.Plugins.AudioDb
                 await using FileStream jsonStream = AsyncFile.OpenRead(path);
                 var obj = await JsonSerializer.DeserializeAsync<RootObject>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
 
-                if (obj != null && obj.album != null && obj.album.Count > 0)
+                if (obj is not null && obj.album is not null && obj.album.Count > 0)
                 {
                     result.Item = new MusicAlbum();
                     result.HasMetadata = true;
diff --git a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistImageProvider.cs b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistImageProvider.cs
index 9c24476608..6d67ad634a 100644
--- a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistImageProvider.cs
@@ -65,7 +65,7 @@ namespace MediaBrowser.Providers.Plugins.AudioDb
                 await using FileStream jsonStream = AsyncFile.OpenRead(path);
                 var obj = await JsonSerializer.DeserializeAsync<AudioDbArtistProvider.RootObject>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
 
-                if (obj != null && obj.artists != null && obj.artists.Count > 0)
+                if (obj is not null && obj.artists is not null && obj.artists.Count > 0)
                 {
                     return GetImages(obj.artists[0]);
                 }
diff --git a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistProvider.cs b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistProvider.cs
index 538dc67c42..40c4898852 100644
--- a/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistProvider.cs
+++ b/MediaBrowser.Providers/Plugins/AudioDb/AudioDbArtistProvider.cs
@@ -70,7 +70,7 @@ namespace MediaBrowser.Providers.Plugins.AudioDb
                 await using FileStream jsonStream = AsyncFile.OpenRead(path);
                 var obj = await JsonSerializer.DeserializeAsync<RootObject>(jsonStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
 
-                if (obj != null && obj.artists != null && obj.artists.Count > 0)
+                if (obj is not null && obj.artists is not null && obj.artists.Count > 0)
                 {
                     result.Item = new MusicArtist();
                     result.HasMetadata = true;
diff --git a/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzAlbumProvider.cs b/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzAlbumProvider.cs
index 2b0c43d05f..34f45f0d57 100644
--- a/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzAlbumProvider.cs
+++ b/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzAlbumProvider.cs
@@ -188,7 +188,7 @@ public class MusicBrainzAlbumProvider : IRemoteMetadataProvider<MusicAlbum, Albu
             // TODO: Actually try to match the release. Simply taking the first result is stupid.
             var releaseGroup = await _musicBrainzQuery.LookupReleaseGroupAsync(new Guid(releaseGroupId), Include.None, null, cancellationToken).ConfigureAwait(false);
             var release = releaseGroup.Releases?.Count > 0 ? releaseGroup.Releases[0] : null;
-            if (release != null)
+            if (release is not null)
             {
                 releaseId = release.Id.ToString();
                 result.HasMetadata = true;
@@ -214,7 +214,7 @@ public class MusicBrainzAlbumProvider : IRemoteMetadataProvider<MusicAlbum, Albu
                 releaseResult = releaseSearchResults.Results.Count > 0 ? releaseSearchResults.Results[0].Item : null;
             }
 
-            if (releaseResult != null)
+            if (releaseResult is not null)
             {
                 releaseId = releaseResult.Id.ToString();
 
diff --git a/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzArtistProvider.cs b/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzArtistProvider.cs
index 2b15154265..718b5a1c46 100644
--- a/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzArtistProvider.cs
+++ b/MediaBrowser.Providers/Plugins/MusicBrainz/MusicBrainzArtistProvider.cs
@@ -133,7 +133,7 @@ public class MusicBrainzArtistProvider : IRemoteMetadataProvider<MusicArtist, Ar
 
             var singleResult = searchResults.FirstOrDefault();
 
-            if (singleResult != null)
+            if (singleResult is not null)
             {
                 musicBrainzId = singleResult.GetProviderId(MetadataProvider.MusicBrainzArtist);
                 result.Item.Overview = singleResult.Overview;
diff --git a/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs b/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
index 8bfdc461e6..38379ae5d9 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
@@ -16,7 +16,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             if (reader.TokenType == JsonTokenType.String)
             {
                 var str = reader.GetString();
-                if (str == null || str.Equals("N/A", StringComparison.OrdinalIgnoreCase))
+                if (str is null || str.Equals("N/A", StringComparison.OrdinalIgnoreCase))
                 {
                     return null;
                 }
diff --git a/MediaBrowser.Providers/Plugins/Omdb/OmdbItemProvider.cs b/MediaBrowser.Providers/Plugins/Omdb/OmdbItemProvider.cs
index e5753b2b59..3ef94ca93b 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/OmdbItemProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/OmdbItemProvider.cs
@@ -90,7 +90,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             var imdbId = searchInfo.GetProviderId(MetadataProvider.Imdb);
 
             var urlQuery = new StringBuilder("plot=full&r=json");
-            if (episodeSearchInfo != null)
+            if (episodeSearchInfo is not null)
             {
                 episodeSearchInfo.SeriesProviderIds.TryGetValue(MetadataProvider.Imdb.ToString(), out imdbId);
                 if (searchInfo.IndexNumber.HasValue)
@@ -142,7 +142,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             if (isSearch)
             {
                 var searchResultList = await JsonSerializer.DeserializeAsync<SearchResultList>(stream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-                if (searchResultList?.Search != null)
+                if (searchResultList?.Search is not null)
                 {
                     var resultCount = searchResultList.Search.Count;
                     var result = new RemoteSearchResult[resultCount];
diff --git a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
index 10077e5c89..6cd1d49b09 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
@@ -141,7 +141,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
 
             var seasonResult = await GetSeasonRootObject(seriesImdbId, seasonNumber, cancellationToken).ConfigureAwait(false);
 
-            if (seasonResult?.Episodes == null)
+            if (seasonResult?.Episodes is null)
             {
                 return false;
             }
@@ -161,7 +161,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             }
 
             // finally, search by numbers
-            if (result == null)
+            if (result is null)
             {
                 foreach (var episode in seasonResult.Episodes)
                 {
@@ -173,7 +173,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
                 }
             }
 
-            if (result == null)
+            if (result is null)
             {
                 return false;
             }
@@ -540,10 +540,10 @@ namespace MediaBrowser.Providers.Plugins.Omdb
 
             public float? GetRottenTomatoScore()
             {
-                if (Ratings != null)
+                if (Ratings is not null)
                 {
                     var rating = Ratings.FirstOrDefault(i => string.Equals(i.Source, "Rotten Tomatoes", StringComparison.OrdinalIgnoreCase));
-                    if (rating?.Value != null)
+                    if (rating?.Value is not null)
                     {
                         var value = rating.Value.TrimEnd('%');
                         if (float.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var score))
diff --git a/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs b/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
index ffbb338e84..4ff9e02477 100644
--- a/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
@@ -70,7 +70,7 @@ namespace MediaBrowser.Providers.Plugins.StudioImages
 
             var imageInfo = GetImage(item, thumbsPath, ImageType.Thumb, "thumb");
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
index ef878e6707..20898d213d 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
@@ -72,7 +72,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
             // TODO use image languages if All Languages isn't toggled, but there's currently no way to get that value in here
             var collection = await _tmdbClientManager.GetCollectionAsync(tmdbId, null, null, cancellationToken).ConfigureAwait(false);
 
-            if (collection?.Images == null)
+            if (collection?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
index 90f2aa88f7..1cce7fc35a 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
@@ -51,7 +51,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
             {
                 var collection = await _tmdbClientManager.GetCollectionAsync(tmdbId, language, TmdbUtils.GetImageLanguagesParam(language), cancellationToken).ConfigureAwait(false);
 
-                if (collection == null)
+                if (collection is null)
                 {
                     return Enumerable.Empty<RemoteSearchResult>();
                 }
@@ -62,7 +62,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
                     SearchProviderName = Name
                 };
 
-                if (collection.Images != null)
+                if (collection.Images is not null)
                 {
                     result.ImageUrl = _tmdbClientManager.GetPosterUrl(collection.PosterPath);
                 }
@@ -104,7 +104,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
                 var cleanedName = TmdbUtils.CleanName(parsedName.Name);
                 var searchResults = await _tmdbClientManager.SearchCollectionAsync(cleanedName, language, cancellationToken).ConfigureAwait(false);
 
-                if (searchResults != null && searchResults.Count > 0)
+                if (searchResults is not null && searchResults.Count > 0)
                 {
                     tmdbId = searchResults[0].Id;
                 }
@@ -116,7 +116,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
             {
                 var collection = await _tmdbClientManager.GetCollectionAsync(tmdbId, language, TmdbUtils.GetImageLanguagesParam(language), cancellationToken).ConfigureAwait(false);
 
-                if (collection != null)
+                if (collection is not null)
                 {
                     var item = new BoxSet
                     {
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
index 1646a93d22..01b8bca397 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
@@ -74,7 +74,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 }
 
                 var movieResult = await _tmdbClientManager.FindByExternalIdAsync(movieImdbId, FindExternalSource.Imdb, language, cancellationToken).ConfigureAwait(false);
-                if (movieResult?.MovieResults != null && movieResult.MovieResults.Count > 0)
+                if (movieResult?.MovieResults is not null && movieResult.MovieResults.Count > 0)
                 {
                     movieTmdbId = movieResult.MovieResults[0].Id;
                 }
@@ -90,7 +90,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 .GetMovieAsync(movieTmdbId, null, null, cancellationToken)
                 .ConfigureAwait(false);
 
-            if (movie?.Images == null)
+            if (movie?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
index dd2d5d97d9..9eced93fa5 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
@@ -72,7 +72,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                     Overview = movie.Overview
                 };
 
-                if (movie.ReleaseDate != null)
+                if (movie.ReleaseDate is not null)
                 {
                     var releaseDate = movie.ReleaseDate.Value.ToUniversalTime();
                     remoteResult.PremiereDate = releaseDate;
@@ -177,7 +177,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 .GetMovieAsync(Convert.ToInt32(tmdbId, CultureInfo.InvariantCulture), info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (movieResult == null)
+            if (movieResult is null)
             {
                 return new MetadataResult<Movie>();
             }
@@ -199,7 +199,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
 
             movie.SetProviderId(MetadataProvider.Tmdb, tmdbId);
             movie.SetProviderId(MetadataProvider.Imdb, movieResult.ImdbId);
-            if (movieResult.BelongsToCollection != null)
+            if (movieResult.BelongsToCollection is not null)
             {
                 movie.SetProviderId(MetadataProvider.TmdbCollection, movieResult.BelongsToCollection.Id.ToString(CultureInfo.InvariantCulture));
                 movie.CollectionName = movieResult.BelongsToCollection.Name;
@@ -207,18 +207,18 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
 
             movie.CommunityRating = Convert.ToSingle(movieResult.VoteAverage);
 
-            if (movieResult.Releases?.Countries != null)
+            if (movieResult.Releases?.Countries is not null)
             {
                 var releases = movieResult.Releases.Countries.Where(i => !string.IsNullOrWhiteSpace(i.Certification)).ToList();
 
                 var ourRelease = releases.FirstOrDefault(c => string.Equals(c.Iso_3166_1, info.MetadataCountryCode, StringComparison.OrdinalIgnoreCase));
                 var usRelease = releases.FirstOrDefault(c => string.Equals(c.Iso_3166_1, "US", StringComparison.OrdinalIgnoreCase));
 
-                if (ourRelease != null)
+                if (ourRelease is not null)
                 {
                     movie.OfficialRating = TmdbUtils.BuildParentalRating(ourRelease.Iso_3166_1, ourRelease.Certification);
                 }
-                else if (usRelease != null)
+                else if (usRelease is not null)
                 {
                     movie.OfficialRating = usRelease.Certification;
                 }
@@ -227,7 +227,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
             movie.PremiereDate = movieResult.ReleaseDate;
             movie.ProductionYear = movieResult.ReleaseDate?.Year;
 
-            if (movieResult.ProductionCompanies != null)
+            if (movieResult.ProductionCompanies is not null)
             {
                 movie.SetStudios(movieResult.ProductionCompanies.Select(c => c.Name));
             }
@@ -239,7 +239,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 movie.AddGenre(genre);
             }
 
-            if (movieResult.Keywords?.Keywords != null)
+            if (movieResult.Keywords?.Keywords is not null)
             {
                 for (var i = 0; i < movieResult.Keywords.Keywords.Count; i++)
                 {
@@ -247,7 +247,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 }
             }
 
-            if (movieResult.Credits?.Cast != null)
+            if (movieResult.Credits?.Cast is not null)
             {
                 foreach (var actor in movieResult.Credits.Cast.OrderBy(a => a.Order).Take(Plugin.Instance.Configuration.MaxCastMembers))
                 {
@@ -273,7 +273,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 }
             }
 
-            if (movieResult.Credits?.Crew != null)
+            if (movieResult.Credits?.Crew is not null)
             {
                 var keepTypes = new[]
                 {
@@ -314,7 +314,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 }
             }
 
-            if (movieResult.Videos?.Results != null)
+            if (movieResult.Videos?.Results is not null)
             {
                 var trailers = new List<MediaUrl>();
                 for (var i = 0; i < movieResult.Videos.Results.Count; i++)
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
index d7f5c99dd2..aa46d8f257 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
 
             var language = item.GetPreferredMetadataLanguage();
             var personResult = await _tmdbClientManager.GetPersonAsync(int.Parse(personTmdbId, CultureInfo.InvariantCulture), language, cancellationToken).ConfigureAwait(false);
-            if (personResult?.Images?.Profiles == null)
+            if (personResult?.Images?.Profiles is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonProvider.cs
index d760ad1426..b3709baf58 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonProvider.cs
@@ -43,7 +43,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
             {
                 var personResult = await _tmdbClientManager.GetPersonAsync(int.Parse(personTmdbId, CultureInfo.InvariantCulture), searchInfo.MetadataLanguage, cancellationToken).ConfigureAwait(false);
 
-                if (personResult != null)
+                if (personResult is not null)
                 {
                     var result = new RemoteSearchResult
                     {
@@ -52,7 +52,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
                         Overview = personResult.Biography
                     };
 
-                    if (personResult.Images?.Profiles != null && personResult.Images.Profiles.Count > 0)
+                    if (personResult.Images?.Profiles is not null && personResult.Images.Profiles.Count > 0)
                     {
                         result.ImageUrl = _tmdbClientManager.GetProfileUrl(personResult.Images.Profiles[0].FilePath);
                     }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
index 943a3a75b2..127d41cc7d 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
@@ -84,7 +84,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .ConfigureAwait(false);
 
             var stills = episodeResult?.Images?.Stills;
-            if (stills == null)
+            if (stills is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
index e20284e6f8..35e304a2ac 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
@@ -107,7 +107,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetEpisodeAsync(seriesTmdbId, seasonNumber.Value, episodeNumber.Value, info.SeriesDisplayOrder, info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (episodeResult == null)
+            if (episodeResult is null)
             {
                 return metadataResult;
             }
@@ -149,7 +149,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 item.SetProviderId(MetadataProvider.TvRage, externalIds.TvrageId);
             }
 
-            if (episodeResult.Videos?.Results != null)
+            if (episodeResult.Videos?.Results is not null)
             {
                 foreach (var video in episodeResult.Videos.Results)
                 {
@@ -162,7 +162,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
             var credits = episodeResult.Credits;
 
-            if (credits?.Cast != null)
+            if (credits?.Cast is not null)
             {
                 foreach (var actor in credits.Cast.OrderBy(a => a.Order).Take(Plugin.Instance.Configuration.MaxCastMembers))
                 {
@@ -176,7 +176,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 }
             }
 
-            if (credits?.GuestStars != null)
+            if (credits?.GuestStars is not null)
             {
                 foreach (var guest in credits.GuestStars.OrderBy(a => a.Order).Take(Plugin.Instance.Configuration.MaxCastMembers))
                 {
@@ -191,7 +191,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
             }
 
             // and the rest from crew
-            if (credits?.Crew != null)
+            if (credits?.Crew is not null)
             {
                 foreach (var person in credits.Crew)
                 {
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
index da32ea4081..fda00537d5 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
@@ -62,7 +62,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
             var seriesTmdbId = Convert.ToInt32(series?.GetProviderId(MetadataProvider.Tmdb), CultureInfo.InvariantCulture);
 
-            if (seriesTmdbId <= 0 || season?.IndexNumber == null)
+            if (seriesTmdbId <= 0 || season?.IndexNumber is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
@@ -75,7 +75,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .ConfigureAwait(false);
 
             var posters = seasonResult?.Images?.Posters;
-            if (posters == null)
+            if (posters is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
index 2cf0f399e0..3cb72b89b5 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetSeasonAsync(Convert.ToInt32(seriesTmdbId, CultureInfo.InvariantCulture), seasonNumber.Value, info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (seasonResult == null)
+            if (seasonResult is null)
             {
                 return result;
             }
@@ -79,7 +79,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
             // TODO why was this disabled?
             var credits = seasonResult.Credits;
-            if (credits?.Cast != null)
+            if (credits?.Cast is not null)
             {
                 var cast = credits.Cast.OrderBy(c => c.Order).Take(Plugin.Instance.Configuration.MaxCastMembers).ToList();
                 for (var i = 0; i < cast.Count; i++)
@@ -94,7 +94,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 }
             }
 
-            if (credits?.Crew != null)
+            if (credits?.Crew is not null)
             {
                 foreach (var person in credits.Crew)
                 {
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
index e96b680b48..9062f1b850 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
@@ -73,7 +73,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetSeriesAsync(Convert.ToInt32(tmdbId, CultureInfo.InvariantCulture), null, null, cancellationToken)
                 .ConfigureAwait(false);
 
-            if (series?.Images == null)
+            if (series?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesProvider.cs
index 4e8fdf0ee8..9590882105 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesProvider.cs
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                     .GetSeriesAsync(Convert.ToInt32(tmdbId, CultureInfo.InvariantCulture), searchInfo.MetadataLanguage, searchInfo.MetadataLanguage, cancellationToken)
                     .ConfigureAwait(false);
 
-                if (series != null)
+                if (series is not null)
                 {
                     var remoteResult = MapTvShowToRemoteSearchResult(series);
 
@@ -76,7 +76,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                     .ConfigureAwait(false);
 
                 var tvResults = findResult?.TvResults;
-                if (tvResults != null)
+                if (tvResults is not null)
                 {
                     var imdbIdResults = new RemoteSearchResult[tvResults.Count];
                     for (var i = 0; i < tvResults.Count; i++)
@@ -97,7 +97,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                     .ConfigureAwait(false);
 
                 var tvResults = findResult?.TvResults;
-                if (tvResults != null)
+                if (tvResults is not null)
                 {
                     var tvIdResults = new RemoteSearchResult[tvResults.Count];
                     for (var i = 0; i < tvResults.Count; i++)
@@ -134,7 +134,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
             };
 
             remoteResult.SetProviderId(MetadataProvider.Tmdb, series.Id.ToString(CultureInfo.InvariantCulture));
-            if (series.ExternalIds != null)
+            if (series.ExternalIds is not null)
             {
                 if (!string.IsNullOrEmpty(series.ExternalIds.ImdbId))
                 {
@@ -233,7 +233,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 result.AddPerson(person);
             }
 
-            result.HasMetadata = result.Item != null;
+            result.HasMetadata = result.Item is not null;
 
             return result;
         }
@@ -252,17 +252,17 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
             series.Overview = seriesResult.Overview;
 
-            if (seriesResult.Networks != null)
+            if (seriesResult.Networks is not null)
             {
                 series.Studios = seriesResult.Networks.Select(i => i.Name).ToArray();
             }
 
-            if (seriesResult.Genres != null)
+            if (seriesResult.Genres is not null)
             {
                 series.Genres = seriesResult.Genres.Select(i => i.Name).ToArray();
             }
 
-            if (seriesResult.Keywords?.Results != null)
+            if (seriesResult.Keywords?.Results is not null)
             {
                 for (var i = 0; i < seriesResult.Keywords.Results.Count; i++)
                 {
@@ -288,7 +288,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
             series.PremiereDate = seriesResult.FirstAirDate;
 
             var ids = seriesResult.ExternalIds;
-            if (ids != null)
+            if (ids is not null)
             {
                 if (!string.IsNullOrWhiteSpace(ids.ImdbId))
                 {
@@ -312,20 +312,20 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
             var usRelease = contentRatings.FirstOrDefault(c => string.Equals(c.Iso_3166_1, "US", StringComparison.OrdinalIgnoreCase));
             var minimumRelease = contentRatings.FirstOrDefault();
 
-            if (ourRelease != null)
+            if (ourRelease is not null)
             {
                 series.OfficialRating = TmdbUtils.BuildParentalRating(ourRelease.Iso_3166_1, ourRelease.Rating);
             }
-            else if (usRelease != null)
+            else if (usRelease is not null)
             {
                 series.OfficialRating = usRelease.Rating;
             }
-            else if (minimumRelease != null)
+            else if (minimumRelease is not null)
             {
                 series.OfficialRating = minimumRelease.Rating;
             }
 
-            if (seriesResult.Videos?.Results != null)
+            if (seriesResult.Videos?.Results is not null)
             {
                 foreach (var video in seriesResult.Videos.Results)
                 {
@@ -341,7 +341,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
         private IEnumerable<PersonInfo> GetPersons(TvShow seriesResult)
         {
-            if (seriesResult.Credits?.Cast != null)
+            if (seriesResult.Credits?.Cast is not null)
             {
                 foreach (var actor in seriesResult.Credits.Cast.OrderBy(a => a.Order).Take(Plugin.Instance.Configuration.MaxCastMembers))
                 {
@@ -363,7 +363,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 }
             }
 
-            if (seriesResult.Credits?.Crew != null)
+            if (seriesResult.Credits?.Crew is not null)
             {
                 var keepTypes = new[]
                 {
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
index 7d77334078..b56c0d7482 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
@@ -73,7 +73,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 extraMethods,
                 cancellationToken).ConfigureAwait(false);
 
-            if (movie != null)
+            if (movie is not null)
             {
                 _memoryCache.Set(key, movie, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -106,7 +106,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 CollectionMethods.Images,
                 cancellationToken).ConfigureAwait(false);
 
-            if (collection != null)
+            if (collection is not null)
             {
                 _memoryCache.Set(key, collection, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -145,7 +145,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 extraMethods: extraMethods,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (series != null)
+            if (series is not null)
             {
                 _memoryCache.Set(key, series, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -174,7 +174,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 string.Equals(displayOrder, "tv", StringComparison.Ordinal) ? TvGroupType.TV :
                 null;
 
-            if (groupType == null)
+            if (groupType is null)
             {
                 return null;
             }
@@ -190,7 +190,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
             var series = await GetSeriesAsync(tvShowId, language, imageLanguages, cancellationToken).ConfigureAwait(false);
             var episodeGroupId = series?.EpisodeGroups.Results.Find(g => g.Type == groupType)?.Id;
 
-            if (episodeGroupId == null)
+            if (episodeGroupId is null)
             {
                 return null;
             }
@@ -200,7 +200,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 language: TmdbUtils.NormalizeLanguage(language),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (group != null)
+            if (group is not null)
             {
                 _memoryCache.Set(key, group, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -235,7 +235,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 extraMethods: TvSeasonMethods.Credits | TvSeasonMethods.Images | TvSeasonMethods.ExternalIds | TvSeasonMethods.Videos,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (season != null)
+            if (season is not null)
             {
                 _memoryCache.Set(key, season, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -265,12 +265,12 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
             await EnsureClientConfigAsync().ConfigureAwait(false);
 
             var group = await GetSeriesGroupAsync(tvShowId, displayOrder, language, imageLanguages, cancellationToken).ConfigureAwait(false);
-            if (group != null)
+            if (group is not null)
             {
                 var season = group.Groups.Find(s => s.Order == seasonNumber);
                 // Episode order starts at 0
                 var ep = season?.Episodes.Find(e => e.Order == episodeNumber - 1);
-                if (ep != null)
+                if (ep is not null)
                 {
                     seasonNumber = ep.SeasonNumber;
                     episodeNumber = ep.EpisodeNumber;
@@ -286,7 +286,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 extraMethods: TvEpisodeMethods.Credits | TvEpisodeMethods.Images | TvEpisodeMethods.ExternalIds | TvEpisodeMethods.Videos,
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (episode != null)
+            if (episode is not null)
             {
                 _memoryCache.Set(key, episode, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -317,7 +317,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 PersonMethods.TvCredits | PersonMethods.MovieCredits | PersonMethods.Images | PersonMethods.ExternalIds,
                 cancellationToken).ConfigureAwait(false);
 
-            if (person != null)
+            if (person is not null)
             {
                 _memoryCache.Set(key, person, TimeSpan.FromHours(CacheDurationInHours));
             }
@@ -353,7 +353,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 TmdbUtils.NormalizeLanguage(language),
                 cancellationToken).ConfigureAwait(false);
 
-            if (result != null)
+            if (result is not null)
             {
                 _memoryCache.Set(key, result, TimeSpan.FromHours(CacheDurationInHours));
             }
diff --git a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
index d0e229b23d..1aeffb65fc 100644
--- a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
+++ b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
@@ -65,11 +65,11 @@ namespace MediaBrowser.Providers.Subtitles
         /// <inheritdoc />
         public async Task<RemoteSubtitleInfo[]> SearchSubtitles(SubtitleSearchRequest request, CancellationToken cancellationToken)
         {
-            if (request.Language != null)
+            if (request.Language is not null)
             {
                 var culture = _localization.FindLanguageInfo(request.Language);
 
-                if (culture != null)
+                if (culture is not null)
                 {
                     request.TwoLetterISOLanguageName = culture.TwoLetterISOLanguageName;
                 }
@@ -271,7 +271,7 @@ namespace MediaBrowser.Providers.Subtitles
                 stream.Position = 0;
             }
 
-            if (exs != null)
+            if (exs is not null)
             {
                 throw new AggregateException(exs);
             }
diff --git a/MediaBrowser.Providers/TV/SeriesMetadataService.cs b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
index c09b6d8138..a261d7cdb5 100644
--- a/MediaBrowser.Providers/TV/SeriesMetadataService.cs
+++ b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
@@ -80,7 +80,7 @@ namespace MediaBrowser.Providers.TV
                 targetItem.Status = sourceItem.Status;
             }
 
-            if (replaceData || targetItem.AirDays == null || targetItem.AirDays.Length == 0)
+            if (replaceData || targetItem.AirDays is null || targetItem.AirDays.Length == 0)
             {
                 targetItem.AirDays = sourceItem.AirDays;
             }
@@ -201,7 +201,7 @@ namespace MediaBrowser.Providers.TV
                 var seasonNumber = episode.ParentIndexNumber >= 0 ? episode.ParentIndexNumber : null;
                 var existingSeason = seasons.FirstOrDefault(i => i.IndexNumber == seasonNumber);
 
-                if (existingSeason == null)
+                if (existingSeason is null)
                 {
                     var season = await CreateSeasonAsync(series, seasonNumber, cancellationToken).ConfigureAwait(false);
                     seasons.Add(season);
diff --git a/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs b/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
index 9e197e737b..6a144365c9 100644
--- a/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
+++ b/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
@@ -85,7 +85,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
         /// <exception cref="ArgumentException"><c>metadataFile</c> is <c>null</c> or empty.</exception>
         public void Fetch(MetadataResult<T> item, string metadataFile, CancellationToken cancellationToken)
         {
-            if (item.Item == null)
+            if (item.Item is null)
             {
                 throw new ArgumentException("Item can't be null.", nameof(item));
             }
@@ -373,7 +373,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                     {
                         var val = reader.ReadElementContentAsBoolean();
 
-                        if (userData != null)
+                        if (userData is not null)
                         {
                             userData.Played = val;
                         }
@@ -384,7 +384,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                 case "playcount":
                     {
                         var val = reader.ReadElementContentAsString();
-                        if (!string.IsNullOrWhiteSpace(val) && userData != null)
+                        if (!string.IsNullOrWhiteSpace(val) && userData is not null)
                         {
                             if (int.TryParse(val, NumberStyles.Integer, CultureInfo.InvariantCulture, out var count))
                             {
@@ -398,7 +398,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                 case "lastplayed":
                     {
                         var val = reader.ReadElementContentAsString();
-                        if (!string.IsNullOrWhiteSpace(val) && userData != null)
+                        if (!string.IsNullOrWhiteSpace(val) && userData is not null)
                         {
                             if (DateTime.TryParse(val, CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal, out var added))
                             {
@@ -633,7 +633,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                         var val = reader.ReadElementContentAsString();
 
                         var hasDisplayOrder = item as IHasDisplayOrder;
-                        if (hasDisplayOrder != null)
+                        if (hasDisplayOrder is not null)
                         {
                             if (!string.IsNullOrWhiteSpace(val))
                             {
@@ -880,7 +880,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
 
                 var fileSystemMetadata = _directoryService.GetFile(val);
                 // non existing file returns null
-                if (fileSystemMetadata == null || !fileSystemMetadata.Exists)
+                if (fileSystemMetadata is null || !fileSystemMetadata.Exists)
                 {
                     Logger.LogWarning("Artwork file {Path} specified in nfo file for {ItemName} does not exist.", uri, itemResult.Item.Name);
                     return;
@@ -1018,7 +1018,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
 
                                 var video = item as Video;
 
-                                if (video != null)
+                                if (video is not null)
                                 {
                                     if (string.Equals("HSBS", val, StringComparison.OrdinalIgnoreCase))
                                     {
@@ -1198,7 +1198,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                                 if (float.TryParse(val, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var ratingValue))
                                 {
                                     // if ratingName contains tomato --> assume critic rating
-                                    if (ratingName != null &&
+                                    if (ratingName is not null &&
                                         ratingName.Contains("tomato", StringComparison.OrdinalIgnoreCase) &&
                                         !ratingName.Contains("audience", StringComparison.OrdinalIgnoreCase))
                                     {
diff --git a/MediaBrowser.XbmcMetadata/Parsers/MovieNfoParser.cs b/MediaBrowser.XbmcMetadata/Parsers/MovieNfoParser.cs
index e510557253..ecfed6873c 100644
--- a/MediaBrowser.XbmcMetadata/Parsers/MovieNfoParser.cs
+++ b/MediaBrowser.XbmcMetadata/Parsers/MovieNfoParser.cs
@@ -82,14 +82,14 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                         var movie = item as Movie;
 
                         var tmdbcolid = reader.GetAttribute("tmdbcolid");
-                        if (!string.IsNullOrWhiteSpace(tmdbcolid) && movie != null)
+                        if (!string.IsNullOrWhiteSpace(tmdbcolid) && movie is not null)
                         {
                             movie.SetProviderId(MetadataProvider.TmdbCollection, tmdbcolid);
                         }
 
                         var val = reader.ReadInnerXml();
 
-                        if (!string.IsNullOrWhiteSpace(val) && movie != null)
+                        if (!string.IsNullOrWhiteSpace(val) && movie is not null)
                         {
                             // TODO Handle this better later
                             if (!val.Contains('<', StringComparison.Ordinal))
diff --git a/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs b/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
index abd3e78d76..af581fc5df 100644
--- a/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
+++ b/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
@@ -33,7 +33,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
 
             var file = GetXmlFile(info, directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return Task.FromResult(result);
             }
@@ -64,7 +64,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
         {
             var file = GetXmlFile(new ItemInfo(item), directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.XbmcMetadata/Providers/BaseVideoNfoProvider.cs b/MediaBrowser.XbmcMetadata/Providers/BaseVideoNfoProvider.cs
index 8574be3f3a..9954424a4c 100644
--- a/MediaBrowser.XbmcMetadata/Providers/BaseVideoNfoProvider.cs
+++ b/MediaBrowser.XbmcMetadata/Providers/BaseVideoNfoProvider.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
             result.Images = tmpItem.Images;
             result.RemoteImages = tmpItem.RemoteImages;
 
-            if (tmpItem.UserDataList != null)
+            if (tmpItem.UserDataList is not null)
             {
                 result.UserDataList = tmpItem.UserDataList;
             }
@@ -66,7 +66,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
         {
             return MovieNfoSaver.GetMovieSavePaths(info)
                 .Select(directoryService.GetFile)
-                .FirstOrDefault(i => i != null);
+                .FirstOrDefault(i => i is not null);
         }
     }
 }
diff --git a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
index 740ca4c49b..130d0bfe40 100644
--- a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
@@ -257,7 +257,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
 
                 var baseItem = item;
 
-                if (baseItem != null)
+                if (baseItem is not null)
                 {
                     AddCommonNodes(baseItem, writer, LibraryManager, UserManager, UserDataManager, ConfigurationManager);
                 }
@@ -748,7 +748,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 writtenProviderIds.Add(MetadataProvider.TvRage.ToString());
             }
 
-            if (item.ProviderIds != null)
+            if (item.ProviderIds is not null)
             {
                 foreach (var providerKey in item.ProviderIds.Keys)
                 {
@@ -832,7 +832,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
 
             var image = item.GetImageInfo(ImageType.Primary, 0);
 
-            if (image != null)
+            if (image is not null)
             {
                 writer.WriteElementString("poster", GetImagePathToSave(image, libraryManager));
             }
@@ -855,7 +855,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
 
             var user = userManager.GetUserById(Guid.Parse(userId));
 
-            if (user == null)
+            if (user is null)
             {
                 return;
             }
@@ -947,7 +947,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                     var personEntity = libraryManager.GetPerson(person.Name);
                     var image = personEntity.GetImageInfo(ImageType.Primary, 0);
 
-                    if (image != null)
+                    if (image is not null)
                     {
                         writer.WriteElementString(
                             "thumb",
diff --git a/src/Jellyfin.Extensions/AlphanumericComparator.cs b/src/Jellyfin.Extensions/AlphanumericComparator.cs
index 98a32d5b20..1b19752bb3 100644
--- a/src/Jellyfin.Extensions/AlphanumericComparator.cs
+++ b/src/Jellyfin.Extensions/AlphanumericComparator.cs
@@ -16,15 +16,15 @@ namespace Jellyfin.Extensions
         /// <returns>A signed integer that indicates the relative values of <c>x</c> and <c>y</c>.</returns>
         public static int CompareValues(string? s1, string? s2)
         {
-            if (s1 == null && s2 == null)
+            if (s1 is null && s2 is null)
             {
                 return 0;
             }
-            else if (s1 == null)
+            else if (s1 is null)
             {
                 return -1;
             }
-            else if (s2 == null)
+            else if (s2 is null)
             {
                 return 1;
             }
diff --git a/src/Jellyfin.MediaEncoding.Hls/Cache/CacheDecorator.cs b/src/Jellyfin.MediaEncoding.Hls/Cache/CacheDecorator.cs
index 09816c9607..360a962909 100644
--- a/src/Jellyfin.MediaEncoding.Hls/Cache/CacheDecorator.cs
+++ b/src/Jellyfin.MediaEncoding.Hls/Cache/CacheDecorator.cs
@@ -87,7 +87,7 @@ public class CacheDecorator : IKeyframeExtractor
         {
             var bytes = File.ReadAllBytes(cachePath);
             cachedResult = JsonSerializer.Deserialize<KeyframeData>(bytes, _jsonOptions);
-            return cachedResult != null;
+            return cachedResult is not null;
         }
 
         cachedResult = null;
diff --git a/tests/Jellyfin.Api.Tests/TestHelpers.cs b/tests/Jellyfin.Api.Tests/TestHelpers.cs
index f9bca41465..5eab3ae6f9 100644
--- a/tests/Jellyfin.Api.Tests/TestHelpers.cs
+++ b/tests/Jellyfin.Api.Tests/TestHelpers.cs
@@ -36,7 +36,7 @@ namespace Jellyfin.Api.Tests
             user.SetPermission(PermissionKind.IsAdministrator, role.Equals(UserRoles.Administrator, StringComparison.OrdinalIgnoreCase));
 
             // Add access schedules if set.
-            if (accessSchedules != null)
+            if (accessSchedules is not null)
             {
                 foreach (var accessSchedule in accessSchedules)
                 {
diff --git a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
index e1bd2fe0f3..5e11a7232d 100644
--- a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
+++ b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
@@ -323,7 +323,7 @@ namespace Jellyfin.Model.Tests
             var val = builder.BuildVideoItem(options);
             Assert.NotNull(val);
 
-            if (playMethod != null)
+            if (playMethod is not null)
             {
                 Assert.Equal(playMethod, val.PlayMethod);
             }
@@ -472,7 +472,7 @@ namespace Jellyfin.Model.Tests
                     }
                 }
             }
-            else if (playMethod == null)
+            else if (playMethod is null)
             {
                 Assert.Null(val.SubProtocol);
                 Assert.Equal("stream", uri.Filename);
@@ -490,7 +490,7 @@ namespace Jellyfin.Model.Tests
             using (var stream = File.OpenRead(path))
             {
                 var value = await JsonSerializer.DeserializeAsync<T>(stream, JsonDefaults.Options);
-                if (value != null)
+                if (value is not null)
                 {
                     return value;
                 }
diff --git a/tests/Jellyfin.Naming.Tests/TV/SeasonFolderTests.cs b/tests/Jellyfin.Naming.Tests/TV/SeasonFolderTests.cs
index b7b5b54ec8..55af33836c 100644
--- a/tests/Jellyfin.Naming.Tests/TV/SeasonFolderTests.cs
+++ b/tests/Jellyfin.Naming.Tests/TV/SeasonFolderTests.cs
@@ -27,7 +27,7 @@ namespace Jellyfin.Naming.Tests.TV
         {
             var result = SeasonPathParser.Parse(path, true, true);
 
-            Assert.Equal(result.SeasonNumber != null, result.Success);
+            Assert.Equal(result.SeasonNumber is not null, result.Success);
             Assert.Equal(result.SeasonNumber, seasonNumber);
             Assert.Equal(isSeasonDirectory, result.IsSeasonFolder);
         }
diff --git a/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs b/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
index 1762b91b9d..511a014a60 100644
--- a/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
+++ b/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
@@ -61,7 +61,7 @@ namespace Jellyfin.Naming.Tests.Video
 
             Assert.Equal(is3D, result.Is3D);
 
-            if (format3D == null)
+            if (format3D is null)
             {
                 Assert.Null(result?.Format3D);
             }
diff --git a/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs b/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
index 79f2366b89..287d881a83 100644
--- a/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
+++ b/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
@@ -25,8 +25,8 @@ namespace Jellyfin.Naming.Tests.Video
                 files.Select(i => VideoResolver.Resolve(i, false, _namingOptions)).OfType<VideoFileInfo>().ToList(),
                 _namingOptions).ToList();
 
-            Assert.Single(result.Where(v => v.ExtraType == null));
-            Assert.Single(result.Where(v => v.ExtraType != null));
+            Assert.Single(result.Where(v => v.ExtraType is null));
+            Assert.Single(result.Where(v => v.ExtraType is not null));
         }
 
         [Fact]
@@ -44,8 +44,8 @@ namespace Jellyfin.Naming.Tests.Video
                 files.Select(i => VideoResolver.Resolve(i, false, _namingOptions)).OfType<VideoFileInfo>().ToList(),
                 _namingOptions).ToList();
 
-            Assert.Single(result.Where(v => v.ExtraType == null));
-            Assert.Single(result.Where(v => v.ExtraType != null));
+            Assert.Single(result.Where(v => v.ExtraType is null));
+            Assert.Single(result.Where(v => v.ExtraType is not null));
             Assert.Equal(2, result[0].AlternateVersions.Count);
         }
 
diff --git a/tests/Jellyfin.Networking.Tests/NetworkParseTests.cs b/tests/Jellyfin.Networking.Tests/NetworkParseTests.cs
index 166bc0513a..8174632bb4 100644
--- a/tests/Jellyfin.Networking.Tests/NetworkParseTests.cs
+++ b/tests/Jellyfin.Networking.Tests/NetworkParseTests.cs
@@ -332,7 +332,7 @@ namespace Jellyfin.Networking.Tests
             // Check to see if dns resolution is working. If not, skip test.
             _ = IPHost.TryParse(source, out var host);
 
-            if (resultObj != null && host?.HasAddress == true)
+            if (resultObj is not null && host?.HasAddress == true)
             {
                 result = ((IPNetAddress)resultObj[0]).ToString(true);
                 var intf = nm.GetBindInterface(source, out _);
@@ -390,7 +390,7 @@ namespace Jellyfin.Networking.Tests
             using var nm = new NetworkManager(GetMockConfig(conf), new NullLogger<NetworkManager>());
             NetworkManager.MockNetworkSettings = string.Empty;
 
-            if (nm.TryParseInterface(result, out Collection<IPObject>? resultObj) && resultObj != null)
+            if (nm.TryParseInterface(result, out Collection<IPObject>? resultObj) && resultObj is not null)
             {
                 // Parse out IPAddresses so we can do a string comparison. (Ignore subnet masks).
                 result = ((IPNetAddress)resultObj[0]).ToString(true);
diff --git a/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs b/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
index 28b2e1d8f2..e18faa422d 100644
--- a/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
+++ b/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
@@ -91,7 +91,7 @@ namespace Jellyfin.Providers.Tests.Manager
 
             // Use type Series to hit DisplayOrder
             Assert.False(TestMergeBaseItemData<Series, SeriesInfo>(propName, oldValue, newValue, null, false, out _));
-            if (lockField != null)
+            if (lockField is not null)
             {
                 Assert.False(TestMergeBaseItemData<Series, SeriesInfo>(propName, oldValue, newValue, lockField, true, out _));
                 Assert.False(TestMergeBaseItemData<Series, SeriesInfo>(propName, null, newValue, lockField, false, out _));
@@ -120,7 +120,7 @@ namespace Jellyfin.Providers.Tests.Manager
 
             // Use type Audio to hit AlbumArtists
             Assert.False(TestMergeBaseItemData<Audio, SongInfo>(propName, oldValue, newValue, null, false, out _));
-            if (lockField != null)
+            if (lockField is not null)
             {
                 Assert.False(TestMergeBaseItemData<Audio, SongInfo>(propName, oldValue, newValue, lockField, true, out _));
                 Assert.False(TestMergeBaseItemData<Audio, SongInfo>(propName, Array.Empty<string>(), newValue, lockField, false, out _));
@@ -328,11 +328,11 @@ namespace Jellyfin.Providers.Tests.Manager
                 People = oldValue
             };
 
-            var lockedFields = lockField == null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
+            var lockedFields = lockField is null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
             MetadataService<Movie, MovieInfo>.MergeBaseItemData(source, target, lockedFields, replaceData, false);
 
             actualValue = target.People;
-            return newValue?.Equals(actualValue) ?? actualValue == null;
+            return newValue?.Equals(actualValue) ?? actualValue is null;
         }
 
         /// <summary>
@@ -367,12 +367,12 @@ namespace Jellyfin.Providers.Tests.Manager
             };
             property.SetValue(target.Item, oldValue);
 
-            var lockedFields = lockField == null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
+            var lockedFields = lockField is null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
             // generic type doesn't actually matter to call the static method, just has to be filled in
             MetadataService<TItemType, TIdType>.MergeBaseItemData(source, target, lockedFields, replaceData, false);
 
             actualValue = property.GetValue(target.Item);
-            return newValue?.Equals(actualValue) ?? actualValue == null;
+            return newValue?.Equals(actualValue) ?? actualValue is null;
         }
     }
 }
diff --git a/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs b/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
index 725e295b9a..5ca59f0ede 100644
--- a/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
+++ b/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
@@ -423,14 +423,14 @@ namespace Jellyfin.Providers.Tests.Manager
             where TProviderType : class, IImageProvider
         {
             Mock<IHasOrder>? hasOrder = null;
-            if (order != null)
+            if (order is not null)
             {
                 hasOrder = new Mock<IHasOrder>(MockBehavior.Strict);
                 hasOrder.Setup(i => i.Order)
                     .Returns((int)order);
             }
 
-            var provider = hasOrder == null
+            var provider = hasOrder is null
                 ? new Mock<TProviderType>(MockBehavior.Strict)
                 : hasOrder.As<TProviderType>();
             provider.Setup(p => p.Name)
@@ -471,14 +471,14 @@ namespace Jellyfin.Providers.Tests.Manager
             }
 
             Mock<IHasOrder>? hasOrder = null;
-            if (order != null)
+            if (order is not null)
             {
-                hasOrder = forcedProvider == null ? new Mock<IHasOrder>() : forcedProvider.As<IHasOrder>();
+                hasOrder = forcedProvider is null ? new Mock<IHasOrder>() : forcedProvider.As<IHasOrder>();
                 hasOrder.Setup(i => i.Order)
                     .Returns((int)order);
             }
 
-            var provider = hasOrder == null
+            var provider = hasOrder is null
                 ? new Mock<TProviderType>(MockBehavior.Strict)
                 : hasOrder.As<TProviderType>();
             provider.Setup(p => p.Name)
@@ -499,7 +499,7 @@ namespace Jellyfin.Providers.Tests.Manager
             };
 
             // only create type options if populating it with something
-            if (imageFetcherOrder != null || metadataFetcherOrder != null)
+            if (imageFetcherOrder is not null || metadataFetcherOrder is not null)
             {
                 imageFetcherOrder ??= Array.Empty<string>();
                 metadataFetcherOrder ??= Array.Empty<string>();
@@ -527,7 +527,7 @@ namespace Jellyfin.Providers.Tests.Manager
             var serverConfiguration = new ServerConfiguration();
 
             // only create type options if populating it with something
-            if (imageFetcherOrder != null || localMetadataReaderOrder != null || metadataFetcherOrder != null)
+            if (imageFetcherOrder is not null || localMetadataReaderOrder is not null || metadataFetcherOrder is not null)
             {
                 imageFetcherOrder ??= Array.Empty<string>();
                 localMetadataReaderOrder ??= Array.Empty<string>();
diff --git a/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs b/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
index 9b80f0b948..6b2d9021c9 100644
--- a/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
+++ b/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
@@ -80,7 +80,7 @@ namespace Jellyfin.Providers.Tests.MediaInfo
 
             var actual = await embeddedImageProvider.GetImage(input, type, CancellationToken.None);
             Assert.NotNull(actual);
-            if (expectedFormat == null)
+            if (expectedFormat is null)
             {
                 Assert.False(actual.HasImage);
             }
@@ -131,7 +131,7 @@ namespace Jellyfin.Providers.Tests.MediaInfo
 
             var actual = await embeddedImageProvider.GetImage(input, type, CancellationToken.None);
             Assert.NotNull(actual);
-            if (expectedFormat == null)
+            if (expectedFormat is null)
             {
                 Assert.False(actual.HasImage);
             }
diff --git a/tests/Jellyfin.Providers.Tests/MediaInfo/VideoImageProviderTests.cs b/tests/Jellyfin.Providers.Tests/MediaInfo/VideoImageProviderTests.cs
index 6b2a052419..7ea6f7d9cb 100644
--- a/tests/Jellyfin.Providers.Tests/MediaInfo/VideoImageProviderTests.cs
+++ b/tests/Jellyfin.Providers.Tests/MediaInfo/VideoImageProviderTests.cs
@@ -110,7 +110,7 @@ namespace Jellyfin.Providers.Tests.MediaInfo
         private static IMediaSourceManager GetMediaSourceManager(Video item, MediaStream? defaultStream, List<MediaStream> mediaStreams)
         {
             var defaultStreamList = new List<MediaStream>();
-            if (defaultStream != null)
+            if (defaultStream is not null)
             {
                 defaultStreamList.Add(defaultStream);
             }
diff --git a/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs b/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
index 31f33c6825..1bd51b2468 100644
--- a/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
+++ b/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
@@ -50,7 +50,7 @@ namespace Jellyfin.Server.Implementations.Tests.TypedBaseItem
 
         private static bool IsProjectAssemblyName(string? name)
         {
-            if (name == null)
+            if (name is null)
             {
                 return false;
             }
diff --git a/tests/Jellyfin.Server.Integration.Tests/Controllers/EncoderController.cs b/tests/Jellyfin.Server.Integration.Tests/Controllers/EncoderController.cs
index 1a720c2f62..3d4c27c95c 100644
--- a/tests/Jellyfin.Server.Integration.Tests/Controllers/EncoderController.cs
+++ b/tests/Jellyfin.Server.Integration.Tests/Controllers/EncoderController.cs
@@ -22,7 +22,7 @@ namespace Jellyfin.Server.Integration.Tests.Controllers
         {
             return new ContentResult()
             {
-                Content = (@params != null && @params.Count > 0)
+                Content = (@params is not null && @params.Count > 0)
                     ? string.Join("&", @params.Select(x => x.Key + "=" + x.Value))
                     : string.Empty,
                 ContentType = "text/plain; charset=utf-8",
@@ -42,7 +42,7 @@ namespace Jellyfin.Server.Integration.Tests.Controllers
         {
             return new ContentResult()
             {
-                Content = (@params != null && @params.Count > 0)
+                Content = (@params is not null && @params.Count > 0)
                     ? string.Join("&", @params.Select(x => x.Key + "=" + string.Join(',', x.Value)))
                     : string.Empty,
                 ContentType = "text/plain; charset=utf-8",