This command deletes the custom folder views, restoring default configurations. It’s harmless and resolves 30% of stuck startup issues according to Microsoft community reports. Microsoft provides a built-in tool called SCANPST.EXE to scan and repair minor OST corruption. If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes restarting it will fix the fix MFA prompts not working problem. It is located in the folder of your original Personal Folders (.pst) file.

Step 3 - Recover repaired items to a new .pst file

• Third-party add-ins are among the most common culprits for Outlook not opening properly.
• Following the above steps—from safe mode diagnostics to repairing data files—will restore functionality in most cases.
• The next solution to repair Outlook is to reinstall the problematic Outlook version/application.
• If it does not work, then unfortunately, you will be unable to recover any additional information.
• The steps to access the repair tool vary depending on your operating system.
• ScanPST can only repair and fix minor corruption and issues in Outlook files.
• The Inbox Repair tool is automatically installed with all English-language Microsoft Outlook installation options depending on your operating system.

Run a full scan through the dashboard and receive a detailed report on configuration health, certificate status, and network connectivity. This solution Office 365 Sync Errors Fix prevents display rendering errors that occur after driver or DirectX updates.

Can I delete my OST file without losing data?

If all the above methods were unsuccessful, you could take a closer look at the Outlook data file instead. If that does not work you can try using SFWare PST repair software. The last option in this list is to repair the Outlook data file.

Easily Repair Outlook 365 and Outlook 2021, 2019, 2016, 2013, 2010, 2007, & Other Versions

Always close Outlook properly, maintain smaller data files, and use the SCANPST tool or SaRA assistant for preventive maintenance. If errors persist, deleting the OST file or creating a new Outlook profile usually resolves all sync-related issues. It automatically detects corrupted data files, fixes profile errors, and reconfigures Outlook to restore connectivity with Office 365.

Repair Outlook OST File Not Working in Office 365 – Complete Fix (

By the end, you’ll know exactly how to restore your Outlook and prevent future errors. If your Microsoft Outlook won’t open after a recent Windows update, you’re troubleshoot Outlook synchronizing folders error not alone. Many users encounter startup freezes, profile loading loops, and crashes following major Windows patches or Office updates.