How To Fix Mac Editing Error On Microsoft 365 Account

To fix the "Your account doesn't allow editing on a Mac" error in Microsoft 365, follow these steps:

1. Verify your Office 365 license:

   • Visit portal.office.com and log in.
   • Go to "My Account" and check the "Subscriptions" panel.
   • Ensure that Office 365 is listed and that you have the required license.

2. Remove potentially corrupt files on your Mac:

   • Open the Finder and go to ~/Library (press Shift, Command, and :, then type ~/Library and hit Enter).
   • Locate the Group Containers folder and delete the following three files or folders:
     • UBF8T346G9.ms
     • UBF8T346G9.Office
     • UBF8T346G9.OfficeOsfWebHost
   • Empty the Trash and restart the Office application to check if you can edit documents.

3. Reset Microsoft Office to its default state:

   • Obtain a free edition of CleanMyMac X from https://cleanmymac.com/download.
   • Run the app, go to "Maintenance," and choose "Repair Disk Permissions."
   • Navigate to the "Uninstaller" tab, find Office 365, and select "Reset" for each app instead of uninstalling.
   • Relaunch the Office app to see if you can edit files.

4. Reset user license assignments:

   • Log into the Microsoft 365 Admin Center.
   • Go to "Users" > "Active users" and find the affected user.
   • In the right pane, select "Licenses and Apps."
   • Expand the "Licenses" section, select the necessary licenses, save changes, and potentially repeat this uncheck-save-check-save process.

5. Sign out of Office and sign back in:

   • Open an Office app and select your name at the top.
   • Click "Sign out."
   • Sign in with your Work or School account.
   • Try activating Microsoft 365 again.

6. Reinstall Microsoft Office 365 if needed:

   • Completely uninstall your current Office 365 installation using an uninstaller tool such as CleanMyMac X.
   • Download and install a fresh copy of Microsoft Office 365.

7. Repair disk permissions:

   • Launch CleanMyMac X, go to "Maintenance," and select "Repair Disk Permissions."
   • Also consider cleaning system junk, which grows over time and can contribute to performance issues.

For more detailed instructions on removing license files and how to reset Microsoft Office, refer to the guides provided on the official resources:

1. Microsoft 365 Apps activation error documentation
2. Microsoft 365 Apps removal tool
3. CleanMyMac X instructions

By thoroughly following these steps, you should be able to resolve the "Your account doesn't allow editing on a Mac" error in Microsoft 365 on your new Mac.