How to Fix Read-Only Documents on a Mac

Overview

Some Mac users may encounter an issue where Microsoft 365 applications (Word, Excel, PowerPoint, etc.) open documents in Read-Only mode, preventing editing and saving. This usually happens because of corrupted credentials stored in the Mac’s Keychain or outdated license information.

This guide walks you through steps to resolve the problem.

Steps

1. Close Microsoft 365 Apps
   • Sign out of your account (Word → Sign Out).
   • Quit all Microsoft 365 applications (Word, Excel, PowerPoint, etc.).
2. Open Keychain Access
   • Use Spotlight Search (Cmd + Space).
   • Type Keychain and open Keychain Access.

     

3. Delete Microsoft Keys in Keychain
   • In Keychain Access, use the search bar to search for “Microsoft.”

     

   • Delete any items that contain “Microsoft.”
   • Close Keychain Access.
4. Sign Back In
   • Open Microsoft Word.
   • Sign in again with your NEOMED email credentials.

     

   • Check if you can now edit your documents.
5. Reinstall Office (if Needed)
   If the issue persists:
   • Uninstall Microsoft Office from your Mac.
   • Download a fresh version from the Microsoft 365 Portal.
   • Install and sign in with your NEOMED email credentials.
6. Further Help
   • If you still can’t edit, follow Microsoft’s Remove Office License Files guide.
   • Or, contact the IT Help Desk for assistance.

What to Expect When It’s Fixed

• Microsoft 365 documents will open in editable mode.
• You will be able to edit, save, and collaborate normally.