Clear Teams Cache
For MAC, follow the steps below.
1) Quite Teams
2) Open a terminal window
3) run the following commands
sudo rm -rf ~/Library/Containers/com.microsoft.teams2
sudo rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams
4) Close the terminal window
5) Reopen teams and it will reinitiate your profile
For Windows, follow the steps below.
Classic Teams
1) If Teams is still running, right-click the Teams icon on 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 the following path, and then select OK: %appdata%\Microsoft\Teams
4) Delete all files and folders in the directory.
5) Restart Teams
New Teams
Method 1: Reset the app
1) Type settings in the search box, and then select the Settings app from the results.
2) Select Apps > Installed apps, and then type Microsoft Teams in the search box.
3) Locate the New Microsoft Teams app from the results, select the More options button (...) on the right, and then select Advanced options.
4) In the Reset section, select Reset.
5) Restart Teams.
Method 2: Delete the files
1) If Teams is still running, right-click the Teams icon on 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 the following path, and then select OK: %userprofile%\appdata\local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams
4) Delete all files and folders in the directory
5) Restart Teams