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How to Fix Microsoft 365 Apps Not Opening on macOS Sequoia
Question details
The user is unable to launch Microsoft 365 applications after purchasing a yearly subscription and installing them on a Mac.
- Product
- Microsoft 365
- Device & OS
- macOS Sequoia 15.5
- Scenario
- Launching newly installed Microsoft 365 applications on a Mac.
- Observed behavior
- The Microsoft 365 apps fail to open or launch, preventing access to the software.
Ensure your Mac is connected to a reliable internet network and have your Microsoft account login details ready before attempting any reinstallations.
Update macOS and Verify Application Location
Ensuring your macOS is fully updated and confirming the apps are in the correct system folder often resolves launch failures.
Click the Apple menu, select 'System Settings', go to 'General', and click 'Software Update' to install any available macOS Sequoia updates.
Open Finder and navigate to the 'Applications' folder to confirm the Microsoft 365 apps (like Word or Excel) are correctly placed there.
If you can launch the Microsoft AutoUpdate tool, use it to ensure you have the latest builds compatible with macOS Sequoia.
Perform a Clean Reinstallation of Microsoft 365
If updating does not work, removing all Microsoft 365 files and reinstalling a fresh copy can fix corrupted configurations.
Try WPS Office While Troubleshooting Microsoft 365
If your Microsoft 365 apps refuse to open and you urgently need to view or edit documents, WPS Office offers a free, lightweight alternative for Mac. It provides a familiar interface and allows you to work without interruption.
- 1. Download WPS Office: Visit the official WPS Office website and download the Mac version.
- 2. Install and Launch: Follow the simple installation prompt and launch WPS Office on your Mac.
- 3. Open Your Documents: Click 'Open' to select and immediately edit your existing Microsoft Office files.
Frequently Asked Questions
Why won't Microsoft Word open on my Mac after updating to Sequoia?
Major OS updates can sometimes cause compatibility issues with older app builds. Updating Microsoft Word via the App Store or Microsoft AutoUpdate usually resolves this problem.
Will I lose my files if I uninstall and reinstall Microsoft 365?
No, uninstalling the Microsoft 365 applications only removes the software itself. Your personal documents, spreadsheets, and presentations saved locally or on OneDrive will not be deleted.
What should I do if I get a specific error code when opening Office apps?
Take a screenshot or record the exact error message. If standard troubleshooting fails, provide this error code to Microsoft Support to help them diagnose the specific issue.
