Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi Julien,
Try fully updating Teams (in the top right next to the "..." if you see an "update" option click it and follow the directions). You may have to do this a few times until all concurrent updates complete.
If you use a wireless headset that connects with a USB Link adapter, try disconnecting the adapter to see if the issue persists (you can temporarily use your computer speakers/mic in the meantime). If it solves the problem, either connect the headset with bluetooth instead of its USB adapter (if the headset has this ability) or purchase/use a different headset that is bluetooth capable.
I can't promise either of these two things will fix it, but those are the two solutions that have worked for my users.