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Fix Microsoft 365 Apps Crashing on Windows 11 (Word, Excel, Outlook)
Question details
Microsoft 365 apps repeatedly close or crash while in use, even after uninstalling and reinstalling the software.
- Product
- Microsoft 365
- Device & OS
- Windows 11
- Scenario
- Using Office applications for daily tasks when they suddenly shut down without warning.
- Observed behavior
- Word, Excel, and Outlook crash unexpectedly during use despite having a fully updated Windows 11 system and a fresh reinstallation of Microsoft 365.
Save all your ongoing work in other applications and ensure you have your Microsoft account credentials ready, as you may need to sign in again or create a new user profile.
Run Office Apps in Safe Mode and Disable Add-ins
Identify if a faulty or incompatible third-party add-in is causing your Microsoft 365 apps to crash.
Starting your Office applications in Safe Mode bypasses add-ins and customizations. If the application works perfectly in Safe Mode, an add-in is likely causing the crashing.
Press Windows + R to open the Run dialog box. Type 'winword /safe', 'excel /safe', or 'outlook /safe' and press Enter.
If the application opens without crashing, go to File > Options > Add-ins.
At the bottom of the window, ensure 'COM Add-ins' is selected in the Manage drop-down list and click 'Go'.
Uncheck all add-ins in the list, click OK, and close the application. Restart the app normally to see if the crashing issue is resolved.
Create a New Local Windows User Profile
Use this solution if reinstalling Office didn't help, as your current Windows 11 user profile might be corrupted.
Perform an Online Repair for Microsoft 365
Fix corrupted Office installation files or registry keys that the standard uninstallation might have missed.
Switch to WPS Office for a Stable, Crash-Free Experience
If Microsoft 365 continues to crash on your Windows 11 PC despite extensive troubleshooting, consider switching to WPS Office. It is a free, lightweight, and highly stable suite that lets you seamlessly open, edit, and save Word, Excel, and PowerPoint files.
- 1. Download the Installer: Visit the official WPS Office website and download the free installer for Windows.
- 2. Install WPS Office: Run the downloaded file and follow the lightweight setup wizard to complete the installation in minutes.
- 3. Open Your Files: Launch WPS Office and open your existing Microsoft Office documents directly without worrying about formatting loss.
Frequently Asked Questions
Why do my Microsoft 365 apps close immediately after opening on Windows 11?
This is often caused by incompatible COM add-ins or a corrupted Windows user profile. Starting the application in Safe Mode (e.g., typing 'winword /safe' in the Run dialog) can help determine if an add-in is the root cause.
Does reinstalling Microsoft 365 always fix app crashing issues?
No. If the root cause is a corrupted Windows user profile, lingering registry errors, or a conflicting background application, simply uninstalling and reinstalling Office won't resolve the crashing. Creating a new local administrator account is recommended in this scenario.
Will I lose my files if I repair or reinstall Microsoft 365?
No, running an Online Repair or reinstalling Microsoft 365 only affects the application files. Your personal documents, spreadsheets, and emails saved on your local drive or in OneDrive will remain completely safe.
