Something mutes audio input automatically in Parallels Desktop 10

Hi
Problem: Something randomly turns the audio mute setting on in the Devices - Sound settings. The sound input for Mac is not transmitted to the guest anymore. AFAIK, there is no hotkey that could accidentally trigger that. When I check in System Preferences, the sound input to Mac still works: the audio input bar moves when I make a noise.
I have this problem only on one computer.

Host: MacBook Pro, 10.10
Guest: Windows 7 64 Pro

Steps taken:
- This has happened on a different Mac, too, but then I moved the VM to the MacBook Pro.
- Reinstalled Parallels Tools
- Used different microphone as sound card.

Any ideas?
Boris

 

Hi @BorislavK please try this solution and let us know the results.

 

Hi
It's funny, since I've described this to you, it has just stopped happening.
I did not implement what it is written in the article, but will do so if it happens again.
Thanks,
Boris

 

Ok, please let us know any results.