Why does my current version of Office, which I paid for, no longer work?

A one-time Office purchase does not become an annual subscription, but the inability to save means the installed Mac apps are currently in reduced-functionality mode and are not recognizing a usable license.

First, identify the applicable fix

Open Word → About Microsoft Word and note:

• License/product year: Office 2019, 2021, or another version
• Exact version, such as 16.114.1
• Any activation message or error code
• Your macOS version

Also sign in to your Microsoft account’s Services & subscriptions page and verify that the one-time Office purchase appears. Microsoft’s Mac activation guidance requires signing in with the account associated with that purchase.^1^

Then use the matching case below.

If this is Office 2021 version 16.114.1

A matching Office 2021 for Mac case reports that activation was lost after installing build 16.114.1. Its accepted resolution is:

1. Uninstall the Office applications.
2. Install Office 16.114 using this Microsoft-hosted installer:
   https://res.public.onecdn.static.microsoft/mro1cdnstorage/C1297A47-86C4-4C1F-97FA-950631F94777/MacAutoupdate/Microsoft_365_and_Office_16.114.26101123_BusinessPro_Installer.pkg?atp=ets
3. If necessary, use Office 16.113 instead:
   https://res.public.onecdn.static.microsoft/mro1cdnstorage/C1297A47-86C4-4C1F-97FA-950631F94777/MacAutoupdate/Microsoft_365_and_Office_16.113.26100421_Installer.pkg?atp=ets
4. Open Word or Excel and sign in with the Microsoft account owning Office 2021.
5. Select Help → Check for Updates.
6. Clear Automatically keep Microsoft apps up to date, then select Turn Off.^2^

Only use this rollback when About Microsoft Word specifically shows Office 2021 build 16.114.1.

If Office came from the Mac App Store

Mac App Store editions of Word, Excel, and PowerPoint require a Microsoft 365 subscription for editing. One-time licenses such as Office 2016 or 2019 must use Office downloaded directly from Microsoft; an incompatible App Store installation enters reduced-functionality mode.^3^

To check:

1. Open Finder → Applications.
2. Control-click Microsoft Word.app → Show Package Contents.
3. Open Contents.
4. If _MASReceipt exists, the app came from the Mac App Store.^4^
5. Remove those Office apps, reinstall Office from the Install Microsoft 365 or Office option under the Microsoft account that shows your purchase, and sign in to activate.

If this is Office 2019 after July 13, 2026

A certificate change can put Office apps that were not updated to the required version into reduced-functionality mode after July 13, 2026. The symptoms include being able to open files but not edit, save, use Save As, or create files.^5^

Update from Help → Check for Updates, fully quit every Office app, reopen one, and sign out and back in. However, a matching Office 2019 case reports that Office 2019 itself could not be updated to the required build and could not be restored by reinstalling or clearing its license. In that specific case, the remaining options were Office for the web, a newer one-time-purchase edition such as Office 2024, or Microsoft 365.^6^

Otherwise, reset the local activation data

Do this only after ruling out the Office 2021 build issue, Office 2019 certificate case, and App Store mismatch:

1. Confirm that you know the Microsoft account and password associated with the purchase.
2. Quit all Office apps.
3. Download and run Microsoft’s License Removal Tool.
4. Select Continue → Install and enter the Mac administrator password.
5. Open Word and sign in with the account owning the one-time license.
6. Select the one-time-purchase license if prompted.
7. Restart the Mac after activation succeeds.^7^

The tool removes local license files, not the purchase, but it will not solve an Office version that can no longer activate.

References

1. What to try if you can't install or activate Office for Mac | Microsoft Support
2. Office 2021, release of 16.114.1- License Removed - Microsoft Q&A
3. Microsoft Office activation and the Mac App Store | Microsoft Support
4. Deploy Office for Mac from the Mac App Store
5. Certificate update for Microsoft 365 apps on managed macOS and iOS devices
6. Inactivated office - Microsoft Q&A
7. How to remove Office license files on a Mac | Microsoft Support