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How to Fix Microsoft 365 Apps Showing Errors After Reinstallation
Question details
Microsoft 365 applications continue to display errors despite multiple uninstall and reinstall attempts.
- Product
- Microsoft 365
- Device & OS
- Windows
- Scenario
- User is trying to launch or use Microsoft 365 apps after reinstalling, but persistent errors prevent normal usage.
- Observed behavior
- The apps appear in the Windows Start menu but may not show in the Installed Apps list, and they consistently display errors upon opening.
Ensure you have a stable internet connection before proceeding, as resolving this issue requires downloading repair files directly from Microsoft servers.
Run an Online Repair for Microsoft 365
Use the Online Repair tool to thoroughly fix corrupted Microsoft 365 files that a standard reinstall or Quick Repair fails to resolve.
A standard reinstallation or Quick Repair often leaves corrupted registry keys or cached files behind. Performing an Online Repair forces the system to download completely fresh installation files directly from Microsoft.
Click on the Start menu, select the Settings gear icon, and navigate to the 'Apps' section.
Click on 'Installed apps' (or 'Apps & features' in older Windows versions) to view your list of installed programs.
Scroll through the list or use the search bar to find 'Microsoft 365'. Click the three dots next to it and select 'Modify' or 'Advanced options'.
When the repair prompt appears, select 'Online Repair' instead of Quick Repair, and click the 'Repair' button. Wait for the process to complete.
Use the Microsoft Uninstall Support Tool
If Microsoft 365 is missing from your Installed Apps list, use the official troubleshooting tool to clean corrupted registry entries before reinstalling.
Switch to WPS Office to Avoid Persistent Reinstallation Errors
If Microsoft 365 continues to show errors or fails to repair properly, consider switching to WPS Office. It is a free, lightweight, and highly reliable office suite that installs smoothly without the complex registry issues common to other software.
- 1. Download WPS Office: Visit the official WPS website and click the download button for the free installer.
- 2. Install Quickly: Run the lightweight setup file to install WPS Office on your PC in just a few seconds.
- 3. Open Your Files: Launch WPS Office and directly open your existing Microsoft Office documents without any formatting loss.
Frequently Asked Questions
Why doesn't Microsoft 365 appear in my Windows Installed Apps?
This usually occurs if previous uninstallation attempts were interrupted or corrupted. It leaves software shortcuts in the Start menu but breaks the system registration, making it invisible to the Windows Settings app.
What is the difference between Quick Repair and Online Repair?
Quick Repair scans and replaces corrupted files using localized cached data on your hard drive, which is fast but often insufficient for deep errors. Online Repair removes the suite and downloads completely fresh files from Microsoft's servers.
Will running an Online Repair delete my personal documents?
No, repairing or reinstalling Microsoft 365 only affects the application software. Your personal documents, spreadsheets, and presentations saved on your local drive or OneDrive remain completely untouched.
