Use Excel and Word stand alone.

You can keep using a one-time-purchase version of Word and Excel on your Mac and save files locally, but the apps must be activated and—if you hold a perpetual license—installed directly from Microsoft rather than from the Mac App Store.

1. Check the license and test local saving

1. Open Word → About Microsoft Word and Excel → About Microsoft Excel.
2. Confirm that each app shows Activated and identifies your purchased version.
3. Create a new document and select File → Save or press Command+S.
4. In the save dialog, choose a local folder such as Documents or Desktop, not OneDrive.
5. Close and reopen the file to confirm the changes were written.

Office permits both subscription and non-subscription versions to save directly to the Mac; cloud storage is optional.^1^

A missing prompt when closing does not necessarily mean saving is unavailable. If Office considers the document unchanged or AutoSave has already saved it, no prompt is needed. For cloud files, AutoSave is enabled by default; on macOS, its default can be disabled under Word/Excel → Preferences → Save → clear “Turn on AutoSave by default.”^2^

2. If Word or Excel is not activated

If both applications cannot save, activation or licensing is the first condition to resolve. Reduced-functionality mode can allow files to open while preventing creation, editing, or saving.^3^

If About Word/Excel does not show the purchased license:

1. Sign in using the Microsoft account associated with the original purchase.
2. Allow the Mac to connect to the internet for activation.
3. Restart Word and Excel, then repeat the local save test.

One-time-purchase Office can operate offline after activation, but Office 2021 and Office 2024 require internet access initially and may require periodic reconnection to maintain activation.^4^

3. If the apps came from the Mac App Store

This is a specific licensing mismatch to check. Mac App Store versions of Word and Excel require a Microsoft 365 subscription for document creation and editing; one-time-purchase licenses are compatible only with Office downloaded directly from Microsoft.^5^

If you see “Action Required: We’ve detected a one-time purchase license”, or know that the apps came from the App Store:

1. Close all Office applications.
2. Open Finder → Applications.
3. Control-click Microsoft Word and Microsoft Excel, then select Move to Trash.
4. Download the Microsoft installers matching your purchased version:
   • Microsoft Word
   • Microsoft Excel
5. Install them and activate using the account associated with the original purchase.
6. Test saving to Documents or Desktop.

Removing the apps does not delete documents, but back up important local files before reinstalling.

4. If activation is correct but saving still fails

Test whether the problem is limited to a particular file or folder:

• Create a blank file and save it to Desktop.
• For an existing document, select it in Finder, choose File → Get Info, and ensure Locked is not selected.
• If files save to Desktop but not their original folder or external drive, check that location’s macOS write permissions.^6^

If unsaved work may already have been lost, open Finder, press Shift+Command+G, and inspect the AutoRecovery folders documented for Word and Excel. Do this before choosing Don’t Save, because that choice deletes the corresponding AutoRecover file.^7^

Older Office editions may continue working, but compatibility with newer macOS releases is not guaranteed after support ends. Microsoft currently lists Office 2019 and Office 2016 as no longer supported; supported Mac editions are designed for the three most recent macOS versions.^8^

References

1. What's the difference between Microsoft 365 and Office 2024? | Microsoft Support
2. [macOS](https://support.microsoft.com/office/collab-files/what-is-autosave)
3. Word, Excell won't save documents - Microsoft Q&A
4. Office 2021 and Office LTSC for Windows and Mac FAQ | Microsoft Support
5. Microsoft Office activation and the Mac App Store | Microsoft Support
6. Why has Word suddenly no allowing me to save or save as my document? The options are grayed out. - Microsoft Q&A
7. Recover files in Office for Mac | Microsoft Support
8. Office suites for individuals and families | Microsoft Support