Likely fix
Fix: Microsoft Teams microphone not working
Teams microphone problems are usually caused by mute, wrong device selection, blocked system permission, browser permission, or Teams holding on to an old audio device.
Quick answer
Open Teams device settings, choose the correct microphone, make a test call, and check Windows or Mac microphone permissions.
Important warning
Teams can keep using an old headset or device until the app is fully quit and reopened.
Try this
- 1 Check that you are not muted in the meeting.
- 2 Open Teams Settings → Devices.
- 3 Select the correct microphone.
- 4 Use Make a test call if available.
- 5 Check system microphone permissions for Teams.
- 6 If using Teams in a browser, check browser site permissions.
- 7 Unplug and reconnect headsets or USB mics.
- 8 Quit Teams completely and reopen it.
- 9 Restart the computer if Teams still uses the wrong device.
Common causes
Teams is muted.
Wrong microphone selected.
System permission is denied.
Browser permission is denied.
Old device is still selected.
Headset or Bluetooth profile problem.
What to check next
- Check Teams device settings.
- Check Teams test call.
- Check system microphone permission.
- Check browser permission if using web Teams.
- Check whether another app can use the mic.