I have the latest version of TeamViewer (13) on two computers for testing purposes.
In each computer when I speak into the microphone, the voice input signal fluctuates green so it can hear both voices.
In today's test, Computer A could not hear Computer B but Computer B could hear Computer A.
In Computer A I started a live session with Computer B but in Computer B it says 'Microphone Muted' whatever I do.
Please help with any advice.