If you’re getting errors on Mac from Microsoft Office apps when working on files from a file server, try changing the local UID on the client machine.

  1. Create a temp admin account then log into that account
  2. Change the UID from 501 to something else like 1020 in System Preferences on the account tab under Advanced Options (Right click on username to get this option) then click ok.
  3. Then run this terminal command to fix the UID on everything else:
    • sudo find / -user [OLDUID] -exec chown -Rfv [username] {} ;
  4. Login back into the original user account and test