Security Incident Response

If you think you have or know you have a Security Incident please fill in the form and our experienced Onevinn CSIRT team will reach out shortly.
The team has long experience in supporting customers in Incident Response and Compromised Recovery.
Keep calm and we will be with you shortly!

Tom Aafloen 01 Jun 2021
1 min

Teams couldn’t unmute (SOLVED)

During Teams meetings, I am sometimes unable to unmute my microphone:

It usually occurs when I use the Teams Web app ( and Bluetooth headsets that mute when I raise the microphone arm.

If I am on my Lenovo laptop, I can usually solve it by using the function key for microphone mute/unmute:

But on my desktop computer’s keyboard, I do not have that key.

To solve it, I right-click the volume icon in the system tray and select Sounds:

Click on the Recording tab, select the microphone you want to unmute and click Properties:

Click on the Levels tab. Here I can see that my microphone is muted in my computer’s sound settings (just as Teams said):

Click on that icon to unmute:
Remember to lower the microphone arm on your headset if you have automatic mute when it is raised.

The mute symbol is gone, and I am automatically unmuted in the Teams meeting, yay!

You can go directly to the Recording tab in Sound settings using this command:

control.exe mmsys.cpl,,1

I have created a shortcut on my desktop for this for quick access:

Please comment and let me know if this solved it for you or not. I can update this post with other solutions you may have.

Also, let me know if you have more information about why the microphone is muted in Windows in a way so that Teams or my headset cannot unmute it.