Since the issue started after installing KB5101650 (OS Build 26200.8875) and multiple Windows features stopped working at the same time (system tray indicators, audio, microphone, camera, and network status), it may be helpful to determine whether the behavior is related to the recently installed update or to Windows components that were affected during the update process.
You can run the following commands from an elevated Command Prompt to check for component corruption:
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
These checks can often repair Windows components without affecting personal files. I hope this helps you narrow down the cause. Please let us know the results after testing, and the community can assist with the next troubleshooting steps.
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