Microphone is set by default to Microsoft Teams Audio and the mic does not take my voice.

Unfortunately, the "minus" button is unselectable. System Settings > Sound etc show Mac as the default mic input, but also shows MS Teams as default (again, no option to remove). All this after I have trashed every sign of MS Teams I can find on my computer. This is clearly a broad issue, can we get some support?

[Edited by Moderator]

Hi,

I had the same issue! I input my issue into chatGPT and everytime it told me to input a code into Terminal, I copy pasted the response command and it helped me figure out what the issue was. I suggest turning to chatGPT for this issue.

Go to Facetime --> "video" tab --> Select "use system setting" from the microphone section. This should always default to the macbook microphone.

PS - Not an apple developer but this is what worked for me.

I have been having the same issue. Once the FaceTime call is underway, and I realize my people can't hear me, I have changed the FaceTime microphone from Microsoft Teams Audio to MacBook Pro Microphone, and that worked but always reverted the next time.

I decided to change it to Use System Setting instead and so far that has been a durable change. Here's hoping it sticks.

I have the same Microsoft Teams Audio issue. I am able to select another audio source, but the issue is that every time I join a FaceTime call, the input device defaults to Microsoft Teams Audio which doesn't seem to be relaying any sound. There is no way to make the default device the built in mic, atleast that I have found and I cant seem to delete Microsoft Teams Audio.

Hi! I found a fix on a reddit thread. Here's the fix.

Navigate to Macintosh HD > Library > Audio > Plug-Ins > HAL - delete the Teams device

Edit: If it's still there, restart your system.

I had the same issue, and ChatGPT helped me solve it. Here's what I did:

Got it — since the “Microsoft Teams Audio” device isn’t showing up in System Settings → Sound and your default mic is set correctly, the issue is likely that FaceTime (or another app) has cached it internally or that the phantom driver is still present in the system but hidden from this panel.

Here’s what I’d do next to rule out and clear the hidden remnants:

Check in Audio MIDI Setup

• • Open Applications → Utilities → Audio MIDI Setup.
  • Look in the left column for any “Microsoft Teams Audio” or similar virtual devices (they sometimes only appear here).
  • If found, select it → click the – (minus) button to remove.

Inspect the HAL driver folder

• • In Finder, press Shift+Cmd+G and go to:

/Library/Audio/Plug-Ins/HAL/

• • Look for any folder named MSTeamsAudioDevice.driver or anything with “Teams” in the name.
  • If you find it, move it to the Trash (or a backup folder), then restart your Mac.

Clear FaceTime’s device cache

• • Quit FaceTime completely.
  • In Finder, press Shift+Cmd+G and go to:

~/Library/Preferences/

• • Look for com.apple.FaceTime.plist and move it to the Desktop (this will reset FaceTime’s preferences).
  • Reopen FaceTime, sign in again, and recheck mic selection.

Restart CoreAudio

• • Open Terminal and run:

sudo killall coreaudiod

• • Enter your password. This restarts the audio service without needing a full reboot.

If after all that the Teams device never appears in Audio MIDI Setup or HAL but FaceTime still behaves as if it’s there, then we’re dealing with a per-app preference issue, not a system audio one — meaning FaceTime is remembering an old input ID that no longer exists. Resetting its preferences (step 3) usually fixes that.

Can’t you just select built-in microphone as the audio source? You can do it in System Settings->Sound, or from the Control Center or the menu bar if you have the audio to show there.

Same thing here. The funniest thing is that it does not appear as a selectable device in the system settings, but does appear in facetime.