Some users reported having problems after installing cumulative update number KB5000842.
This time it’s audio or to be exact Dolby Digital audio 5.1 issues.
Microsoft is aware of the issue and is working on a fix to solve this. Most likely the fix will be included in the next cumulative patchday update for all affected Windows 10 versions.
Microsoft: After installing KB5000842 or later updates, 5.1 Dolby Digital audio may play containing a high-pitched noise or squeak in certain apps when using certain audio devices and Windows settings. Note This issue does not occur when stereo is used.
- Streaming the video or audio in a web browser or different app, instead of the app affected by this issue.
- Enable Spatial sound settings by right-clicking or long-pressing on the volume icon in the notification area, selecting Spatial sound (Off), and selecting any of the available options.
- Client: Windows 10, version 20H2; Windows 10, version 2004