A family of Microsoft word processing software products for creating web, email, and print documents.
Hello Dan Wall!
Based on what you described, it seems that your previously purchased standalone copy of Word and Excel is now showing a “Subscription required to edit or save. Start Microsoft 365 to activate a subscription” message on your Mac, even though you did not sign up for Microsoft 365 and have been using the apps without issues before.
This behavior doesn’t necessarily mean that Microsoft is requiring you to switch to Microsoft 365. In many cases, it happens when something in the setup or activation isn’t being recognized correctly. For example, it could be related to the version of Office installed, the account currently signed in, or how the license is being detected.
You might start by signing in at your Microsoft account and checking Services & Subscriptions to confirm that your one‑time Office purchase appears there. If it does, one option to try is uninstalling the current Office apps and then reinstalling them directly from Microsoft rather than from the Mac App Store (since App Store versions typically require a Microsoft 365 subscription).
Also, depending on the version of Office you have installed, compatibility between the app and the license can sometimes matter. For example, with Office 2019 on Mac, newer app updates may no longer work properly with that license as Mac version 16.78 is the last build that supports Office 2019 license types.
If the Office version is not the issue, you can try using the official Mac License Removal Tool, then restart your Mac and attempt to activate Office again.
Note: The license removal tool only clears saved activation/licensing data on your Mac, it does not delete your purchase or invalidate your license. However, please make sure you still have access to the correct Microsoft account associated with your original Office purchase, as you will need to sign in again to reactivate it after running the tool.
Hope this could help. Feel free to post back if you need any further clarification or assistance!
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.