Office for Mac Issues

Fix Cannot Apply Sensitivity Labels or Open Secret Files in Office for Mac

Amos Gikunda Sep 28, 2026 869 views

Question details

Users are unable to apply sensitivity labels or open documents marked with a Secret label on their Mac.

How to Fix Cannot Apply Sensitivity Labels or Open Secret-Labeled Files on Mac

Product: Microsoft Office for Mac
Device & OS: macOS
Scenario: Attempting to handle secure documents or apply label classifications after a recent Office update.
Observed behavior: The application fails to apply the chosen sensitivity labels and completely blocks access to files marked as Secret.

Before you start

Ensure you have your Microsoft 365 login credentials handy, as you will need to sign back in after reinstalling the application.

Solution 1Recommended

Downgrade to a Previous Stable Office Version

Since this is a known bug in recent updates, reverting to an older stable build (such as version 16.84) can temporarily restore label functionality.

This is a temporary workaround recommended by Microsoft Support while the product team investigates the underlying issue with the current release.

Move current application to Trash

Open your Mac's Applications folder, locate the affected Office app (like PowerPoint or Word), right-click it, and select 'Move to Trash'.

Restart your Mac

Click the Apple menu in the top-left corner of your screen and select 'Restart' to clear system caches.

Download the older version

Navigate to the official Microsoft 'Update history for Office for Mac' page in your browser and download the installer package for version 16.84 or the last known working build.

Install and restart again

Run the downloaded installer, complete the setup wizard, and restart your Mac one more time before testing the sensitivity labels.

Downgrade to a Previous Stable Office Version

Disable Automatic Updates: To prevent your Mac from immediately updating back to the broken version, open an Office app, go to Help > Check for Updates, and uncheck 'Automatically keep Microsoft Apps up to date' until a fix is announced.

Solution 2

Report the Bug via the Microsoft Feedback Portal

Reporting the issue directly to Microsoft helps the product team investigate and prioritize a permanent fix in upcoming updates.

Free Microsoft Office alternative

Try WPS Office for a Stable Document Experience

If buggy Office updates frequently disrupt your workflow on Mac, consider switching to WPS Office. It is a lightweight, highly compatible suite that lets you handle daily document tasks without relying on unstable updates.

1. Download WPS Office: Visit the official WPS Office website and download the Mac installer.
2. Install the Suite: Open the downloaded package and drag the WPS Office icon into your Applications folder.
3. Open Your Files: Right-click any Word, Excel, or PowerPoint document and choose WPS Office to start editing immediately.

Fully compatible with Microsoft Office formats (.docx, .xlsx, .pptx).Stable updates on Mac ensuring uninterrupted document access and editing.Free to use with a familiar interface, requiring no learning curve.Lightweight installation that preserves your Mac's performance.

microsoft office alternative - wps office

Frequently Asked Questions

Why did my sensitivity labels suddenly stop working on my Mac?

This issue is typically caused by a bug introduced in a recent Microsoft Office update that temporarily breaks compatibility with Microsoft Purview Information Protection on macOS.

Will I lose my files if I move the Office app to the Trash?

No, moving the Microsoft Office application to the Trash only removes the software itself. It does not delete your saved documents, spreadsheets, or presentations.

Where can I find older versions of Office for Mac to download?

You can find official installer links for previous stable versions on Microsoft's official 'Update history for Office for Mac' documentation page.

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