IT Error Decoder
Microsoft Teams

How to Fix Teams Room microphone not detected

Last reviewed

Error message

Microsoft Teams Rooms reports 'No microphone' or remote participants can't hear the room.

Mic problems in Teams Rooms are usually about which device Windows is using as the default capture, not about the mic being broken.

What this error means

The Teams Rooms console isn't picking up the room's microphone array, so audio isn't being captured for the call.

Why this happens

USB connectivity, firmware mismatch, conflict between two audio devices both claiming default capture, or the microphone is muted at the firmware level.

Quick fix (for end users)

  • Open the Teams Rooms admin console → check that the right microphone is selected as the meeting mic.
  • Power-cycle the compute module.

Admin / engineer fix

  • From the admin account, check Sound settings → Recording. The room mic should appear and be set as default.

    command
    control mmsys.cpl,,1

  • Check for hardware mute on the device (most speaker bars have a physical or app-controlled mute).

  • If you have both a USB mic and a built-in mic, disable the unused one to avoid Windows picking the wrong default.

  • Update peripheral firmware to a current version.

Step-by-step fix

  1. Power-cycle the room hardware.

  2. Verify the correct mic is set as default in Windows recording devices.

  3. Confirm no hardware mute is engaged.

Affected products

Microsoft Teams Rooms on Windows · Microsoft Teams Rooms on Android

Common variations of this error

People also see these phrasings of the same problem:

  • Teams Rooms remote participants can't hear us
  • Teams Rooms mic not working

Still broken? Try these

  • Test the mic on another machine — if it works there, the room's audio device routing is the problem.
  • Check the Teams Rooms log files (`%ProgramData%\Microsoft\Skype Room System\Logs`) around the time of the issue.
  • Open a support ticket if firmware is current and Windows recognizes the device but Teams won't use it.

Related errors

Related searches

  • teams rooms mic not working
  • teams rooms remote can't hear us

Frequently asked questions

Why does the camera work but not the mic?

They're separate USB endpoints, even on combined bars. The mic-only failure usually points to a default-capture conflict in Windows, not the cable.

Browse more errors in Microsoft Teams: Fix Microsoft Teams errors. Desktop app loading issues, Teams Rooms audio/video drops, federation, and meeting access problems. Or paste your own error into the error decoder tool to find a match. You can also go back to the homepage to browse common errors by topic.