Question Windows blocks microphone in certain program

[windranger]

In Windows 10, my microphone works fine with some apps like Skype.

I've installed Teamviewer and the microphone is blocked, so the other side doesn't hear me.
I suppose it is blocked by Windows.

I opened Settings > Privacy > Microphone with the intent to allow Teamviewer to use the microphone.
This settings window should show desktop apps too, like here:
https://www.howtogeek.com/wp-content/uploads/2019/06/img_5cfaaf0faa9ec.png
where Teamviewer and any other program should be listed.

However, my machine shows only the Windows native apps, like here:
https://prnt.sc/rgoied
therefore I can't check or modify the settings for other apps including Teamviewer.

Is there any other way - including editing the registry - to allow particularly Teamviewer to use the microphone?

Any hints appreciated.

 

[windranger]

Windows was missing some system files.
I scanned and fixed it.