Microphone not working in Microsoft Teams
When your mic works elsewhere but not in Microsoft Teams, the culprit is usually the input device chosen inside Microsoft Teams or a missing permission. Confirm the mic works first, then fix Microsoft Teams.
Step-by-step fix
-
First, confirm the mic itself works: run the CheckMyMic microphone test.
-
In Microsoft Teams, open Settings → Devices → Microphone and select the correct input device.
-
Check the input level and make sure you're not muted inside Microsoft Teams.
-
Grant Microsoft Teams microphone permission at the operating-system level.
-
Restart Microsoft Teams and rejoin your call.
Frequently asked questions
My mic works in the browser test but not in Microsoft Teams — why?
That points to Microsoft Teams's own device settings. Open Settings → Devices → Microphone and pick the same microphone that worked in the test.
Does Microsoft Teams need separate mic permission?
Yes — even if your browser or system has access, Microsoft Teams may need its own grant. Allow it in your OS privacy settings, then restart Microsoft Teams.
Everything looks right but Microsoft Teams still can't hear me — what now?
Update or reinstall Microsoft Teams — device lists go stale after OS updates. Run the CheckMyMic mic test again to prove the mic itself, then check our mic guide for your operating system (Windows, macOS, and the rest): an OS-level permission or default-device change fixes this more often than anything inside Microsoft Teams.
Does Teams noise suppression mute quiet mics?
It can — Teams' noise suppression sometimes gates out soft voices or unusual microphones entirely. In Settings → Devices, set Noise suppression to Low or Off, then use "Make a test call" to hear exactly what Teams transmits.