Clear the Teams App Cache
This article describes steps users can take if Teams is showing incorrect information, such as wrong phone numbers, office numbers, etc, or throwing random errors while accessing files, and other strange behavior in Teams.
Information
The Teams App Cache is stored in the Appdata > Roaming > Microsoft > Teams folder for a user’s profile. This issue is user-based, not machine-based, so if a computer is used by multiple users, some may experience this issue while others do not.
The Teams App Cache is just a local cache of data/settings and should not affect the Teams installation. Exiting Teams, deleting everything in this directory, then restarting Teams should force this information to update from the server (if Teams is still running, not all files may delete because they are in use). The steps below provide a quick way to achieve this goal.
Instructions