Clear Teams cache in Windows

1. If Teams is still running, right-click the Teams icon in the taskbar, and then select Quit.
2. Open the Run dialog box by pressing the Windows logo key  +R.
3. In the Run dialog box, enter %appdata%\Microsoft\Teams, and then select OK.
4. Delete all files and folders in the %appdata%\Microsoft\Teams directory.
5. Restart Teams.