Hi KB_116, I'm Sergio, it's a pleasure to help you.
You can try after to remove all Teams cache files.
To delete all cache files, you follow these steps (in Windows):
a. Fully exit the Microsoft Teams desktop client.
b. Go to File Explorer, and (Windows 10) type in appdata\Microsoft\teams and remove all the content. In Windows 11 you type AppData\Local\Packages\MicrosoftTeams_8wekyb3d8bbwe\LocalCache and remove all the content.
c. You must restart the app and try again.
If the problem continue:
a. uninstall the Team desktop app.
b. Go to File Explorer, and (Windows 10) type in appdata\Microsoft\teams and remove all the content. In Windows 11 you type AppData\Local\Packages\MicrosoftTeams_8wekyb3d8bbwe\LocalCache and remove all the content.
c. Reboot the computer and install the Team desktop app again.
I hope that you can solve the problem, please let me know about the result, because other users with the same problem will know what to do.
Greetings.