Here is a thread describing my situation: https://forums.tomshardware.com/threads/no-sound-from-any-application.3817462/
I tried to uninstall a Win 11 Security Update from yesterday, but. When I did a re-boot, it wasn't uninstalled. A software troubleshooter that was part of Win 11. Has been retired and says it can't help me diagnose the problem. I tried resetting all my audio devices from the Settings, that didn't help. I need to fix this problem in 65hrs. for a ZOOM appointment with a health professional!!
I tried to uninstall a Win 11 Security Update from yesterday, but. When I did a re-boot, it wasn't uninstalled. A software troubleshooter that was part of Win 11. Has been retired and says it can't help me diagnose the problem. I tried resetting all my audio devices from the Settings, that didn't help. I need to fix this problem in 65hrs. for a ZOOM appointment with a health professional!!