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How to Fix Outlook Repair Required Error and Unexpected Closing
Question details
The user needs to stop Microsoft Outlook from displaying a 'repair required' error and subsequently crashing while an email is being composed.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Composing an email or performing standard tasks in Microsoft Outlook.
- Observed behavior
- Outlook interrupts the user with a prompt stating that a repair is required, and then the application abruptly closes on its own.
Verify whether your device is managed by an organizational IT department, as you may need administrator permissions to repair Microsoft 365 installations. Save any text you are currently composing to an external text editor to prevent data loss.
Repair Microsoft 365 from Control Panel
Use the built-in Windows repair utility to scan for and fix corrupted Microsoft Office application files causing the crash.
A standard online repair can resolve most underlying application corruption issues without deleting your emails or account configurations.
Press the Windows key, type 'Control Panel', and press Enter. Navigate to 'Programs' and select 'Programs and Features'.
Scroll through the list of installed applications, find 'Microsoft 365' or your version of 'Microsoft Office', and right-click it.
Select 'Change' from the context menu. Choose 'Online Repair' (which is more comprehensive than Quick Repair) and click 'Repair' to begin the process.
If the Control Panel repair fails, download the 'Microsoft Support and Recovery Assistant' from Microsoft's official website and run the automated Outlook diagnostic.
Disable Problematic Outlook Add-ins
Launch Outlook in Safe Mode to identify and disable third-party add-ins that may be triggering the unexpected closure.
Repair Outlook Data Files (PST/OST)
Use the built-in Inbox Repair Tool (SCANPST.EXE) to fix corruptions within your local Outlook data files.
Switch to WPS Office for a Stable and Lightweight Experience
If Microsoft Office applications frequently crash or require complex repairs, consider switching to WPS Office for your document needs. It offers exceptional stability, lower system resource usage, and a unified platform for all your productivity tasks.
- 1. Download the Installer: Visit the official WPS Office website and download the free installation package for your operating system.
- 2. Install WPS Office: Run the downloaded file and follow the straightforward on-screen instructions to complete the setup.
- 3. Open Your Documents: Launch WPS Office and instantly open your existing Office files with perfect formatting preservation.
Frequently Asked Questions
Why does Outlook suddenly prompt me that a repair is required?
This error is typically triggered by corrupted Office installation files, an incompatible or outdated third-party add-in, or a damaged local Outlook data file (PST or OST) that prevents the application from functioning correctly.
Will running the Microsoft 365 Online Repair delete my emails?
No. Running a Quick or Online Repair from the Control Panel only reinstalls or fixes the underlying Microsoft Office application files. It does not delete your personal data, email accounts, or offline mail stores.
How do I back up my Outlook data before attempting a fix?
You can back up your emails by exporting them. Go to File > Open & Export > Import/Export. Select 'Export to a file', choose 'Outlook Data File (.pst)', select the folders you want to back up, and save the file to a secure location.
What should I do if my account is managed by my company?
If you are using a corporate device or email account, some administrative settings and repair tools may be locked. It is highly recommended to contact your organization's IT support desk so they can run the Microsoft Support and Recovery Assistant with the proper administrative privileges.
