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User profile for user: gen100mek
gen100mek Author
User level: Level 1
6 points

USB headset's microphone doesn't work on MS Teams for Mac

I have a problem with my work MacBook Air M1 (Ventura 13.6.1) audio in Microsoft Teams Classic.


When I connect a USB-C headset (Poly Blackwire 3225) no one can hear me speaking via MS Teams app. The headset is visible in macOS, and I can see levels moving in System Preferences when I speak to its microphone. The headset is also selectable in MS Teams settings but mic levels are not moving at all.


Here's what I checked/tried:

  1. I tried other communication apps: e.g Zoom, and Discord, and it works fine.
  2. I tried to use MS Teams via browser (Chrome) and it works perfectly so it seems to be related to the MS Teams desktop app.
  3. I checked Privacy & Security > Microphone.
  4. I've reinstalled MS Teams Classic.
  5. I used CleanMyMac X to clean junk and reset MS Teams settings.
  6. Just in case, I asked my company for a new headset and nothing has changed.


The problem first occurred 3-4 weeks ago and I'm constantly winning and losing this battle. Sometimes it works, sometimes not. Mostly not. I'm unable to find and document any specific conditions under which people can hear me.


Have you heard about any issue like this?

MacBook Air 13″, macOS 13.6

Posted on Nov 13, 2023 7:48 AM

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3 replies
User profile for user: jpelton
jpelton
User level: Level 1
6 points

Apr 3, 2024 1:42 PM in response to gen100mek

Me, too. My solution below.


  • I tried other communication apps: e.g Zoom, and Discord, and it works fine.
    • Same for me.
  • I tried to use MS Teams via browser (Chrome) and it works perfectly so it seems to be related to the MS Teams desktop app.
    • Same for me. Works in Safari as well.
  • I checked Privacy & Security > Microphone.
    • Similarly, not a problem


Most telling, the internal mic does not work when using Microsoft Teams Classic, but it does when using Teams via a browser.


The Teams web app, however, doesn't allow the use of an external camera, which my video conferencing setup uses, though the Teams Classic app does work with external cameras.


I solved the problem by

  1. Deleting Teams.
  2. Killing the Core Audio Driver process.
  3. Uninstalling the Core Audio Driver (MSTeamsAudioDevice.driver) by removing it from the /Library/Audio/Plug-Ins/HAL folder.
  4. Re-installing teams.


On re-installation, I was notified that there was now an update for the Core Audio Driver. The mic now works.


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User profile for user: adiebaker
adiebaker
User level: Level 1
36 points

May 28, 2024 12:03 PM in response to jpelton

I tried doing this but after reinstalling the new Teams app the mic was still an issue. I removed the audio driver as above and then installed the old Teams app. Everything works fine.

I then tried running New Teams again (still using the old driver) and the mic problems re-occur. Switching back to the old App and everything is working again. Seems like my problem is with the New Teams app

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USB headset's microphone doesn't work on MS Teams for Mac

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