An error occurred while saving the commentAknur commented
Just for general Information (took me a bunch of my time):
Teams got its Settings inside a File named "desktop-config.json" in %appdata%\Microsoft\Teams
There are a couple of Guides to get you a Powershell-Script to work, which you can hang into a gpo starting on userlogin.
Hope this will help many, who searched like me for that.
i recommend you to the following Sites for a more indepth Guide: