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How to Fix the Restart Required Message in Word and Outlook
Question details
Users frequently encounter a persistent "Restart Required" prompt in Microsoft 365 applications that fails to clear after restarting.
- Product
- Microsoft 365
- Device & OS
- Windows
- Scenario
- Opening or using Microsoft 365 apps like Word, Outlook, and OneNote while receiving continuous Copilot notifications or restart prompts.
- Observed behavior
- The application continuously displays a "Restart Required" message, disrupting the workflow and persisting even after the user restarts the application or computer.
Ensure you have saved all your work and completely closed all running Microsoft 365 applications, including Word, Outlook, and OneNote, before initiating the repair process.
Perform an Online Repair via the Control Panel
Running the built-in Microsoft 365 Online Repair tool is the most effective method to fix corrupted application files triggering the restart loop.
The Online Repair option connects to Microsoft's servers to download and replace any missing or corrupted installation files. This process takes longer than a Quick Repair but is much more comprehensive.
Click on the Windows Search bar, type "Control Panel", and hit Enter to open the application.
Under the Programs category, click on the "Uninstall a program" link to view your installed applications.
Scroll through the list to find "Microsoft 365 Apps". Click to select it, then click the "Change" button at the top of the list. Click "Yes" if a User Account Control prompt appears.
In the dialog box that appears, select the "Online Repair" radio button and click "Repair". Wait for the process to complete, then restart your computer.
Update Software and Disable Add-ins
If the repair tool does not resolve the issue, installing pending updates or removing conflicting add-ins can help clear the error.
Try WPS Office to Avoid Microsoft 365 Glitches
If Microsoft Office continues to prompt for restarts or cause frustrating disruptions, consider switching to WPS Office. It is a free, lightweight, and highly stable alternative that allows you to work without interruptions.
- 1. Download WPS Office: Visit the official WPS website and download the free installation file.
- 2. Install the Software: Run the installer and follow the simple on-screen instructions to set up WPS Office in minutes.
- 3. Open Your Files: Double-click any existing Microsoft Office document to instantly open and edit it in WPS Office without losing any formatting.
Frequently Asked Questions
Why do Word and Outlook keep saying a restart is required?
This error typically occurs due to corrupted installation files, stuck background software updates, or glitches related to new features like Microsoft Copilot integrations.
Will performing an Online Repair delete my Office documents?
No, running an Online Repair only fixes the application files. Your personal documents, emails, preferences, and settings remain completely safe and untouched.
What is the difference between Quick Repair and Online Repair?
A Quick Repair runs offline and attempts to fix issues quickly using local files, while an Online Repair requires an internet connection to perform a clean download and reinstallation of corrupted Office components.
