Overview
When you try to activate or use Microsoft 365 apps, you may encounter the error message:
Your account doesn't allow editing on a Mac
Note: if you are using an Alumni or Retiree account you will not be able to use the Microsoft 365 desktop applications.
Resolution
Microsoft recommends you sign-out and back into an Office application, like Microsoft Word:
1. Open an Office app, such as Word.
2. Select your name and profile picture or icon at the top.
3. Select Sign out.
4. Select Sign in.
5. Make sure you are signed in with your Work or School account, not your personal Microsoft account.
6. Try activating Microsoft 365 again.
Additional troubleshooting steps are available here: https://learn.microsoft.com/en-us/office/troubleshoot/activation/doesnt-allow-editing-on-mac