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 Outlook OST vs PST repair problem. It is located in the folder of your original Personal Folders (.pst) file.

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

• Online Repair reinstalls Outlook components while preserving your data, resolving DLL and registry mismatches that prevent startup.
• You’ll see files ending with ".ost" — these store your cached mailbox data.
• It is located in the folder of your original Personal Folders (.pst) file.
• By the end, you’ll know exactly how to restore your Outlook and prevent future errors.
• If you are a regular user who depends heavily on the inbox application to perform daily operations, then Outlook not working or opening would be a big punch in the gut.
• Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
• Last but not least, you can try to repair Outlook PST files using the ScanPST tool or using a specialized Outlook repair tool.

Run a full scan through the dashboard and receive a detailed report on configuration health, certificate status, and network connectivity. This solution rebuild Outlook data file quickly prevents display rendering errors that occur after driver or DirectX updates.

Can I delete my OST file without losing data?

As soon as this operation is complete, other algorithms are run to collect all the orphaned messages and to put them in an Orphans folder. At a higher level, the more visible changes that you see involve folders and messages. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. The built-in Auto-Detect Utility ensures complete privacy—your credentials never leave your device.

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

If it does not work, then unfortunately, you will be unable to recover any additional information. If you could open the file, the following procedure may help you recover additional items from your damaged Personal Folders (.pst) file. If you can't start the Inbox Repair tool automatically or manually, you may try to repair your Office application.

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 guide to Office 365 sign-in errors not alone. Many users encounter startup freezes, profile loading loops, and crashes following major Windows patches or Office updates.