Files Unreachable/Error In Teams
When files are unreachable in Teams, usually you just need to clear your Teams cache:
1. Sign out on Teams > Quit Microsoft Teams by right clicking the icon and select Quit.
2. On your keyboard, Hold Windows key and Press R
3. Cut and paste %appdata%\Microsoft\Teams in the RUN then OK.
4. Delete the contents of the entire folder. If the folders won't delete, just manually delete the contents.
5. Restart Device > Restart Microsoft Teams > Sign In.