Clear Teams Cache

First make sure to totally close out of teams

including from the bottom right of your main monitor

Then open up the File Explorer and paste in this path

%appdata%\Microsoft\Teams

Delete everything you see there

then reopen teams and should rebuild itself

The cache for the "New" Teams UWP app is located at `C:\Users\user.name\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe`. You can clear the cache by deleting this folder with Teams UWP closed.