Issue

Microphone stops working in Microsoft Teams after 30 – 60 seconds. Skype and other applications are not affected, the issue only occurs in Teams.

Resolution

The computer was pending Windows 1909 update (at the time it was running 1903). After installing the update and restarting the computer, the issue no longer occurred.

HP Notebook 14-ck0794na
Windows 10 Home (1903)
Microsoft Teams