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

• Yes — Outlook will re-sync mailbox data from the server once you relaunch the app, as long as you use an Exchange or Office 365 account.
• The platform validates SMTP, IMAP, and POP3 settings against verified databases to identify version mismatches or broken profiles introduced after system updates.
• In this 2025 guide, we’ll show you how to repair the Outlook OST file and restore seamless email performance without losing important data.
• If Outlook is unresponsive, not opening, or is crashing without any morning you can repair using the tried and tested methods provided here.
• When Outlook is not working, or Outlook keeps crashing pondering upon the cause won’t be of use unless it is a regular issue.
• If your Outlook suddenly stopped opening after a Windows update, don’t panic.
• While carrying out the above methods it is advisable to close Outlook beforehand.

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

Can I delete my OST file without losing data?

Opening Outlook in safe mode means that the application will only open all the necessary files to start the applications. In this article, we will teach our readers how to repair outlook with proven methods. If Outlook is unresponsive, not opening, or is crashing without any morning you can repair using the tried and tested methods provided here. If you could not open your original Personal Folders (.pst) file before you ran Inbox Repair Tool, the following procedures may not work.

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 (

You’ll see files ending with ".ost" — these store your cached mailbox data. The steps to access the repair tool vary depending on your operating system. To start, create a new Personal Folders (.pst) file entry in your profile. Then, you can move the recovered items to your new Personal expert Outlook tips by FixTechGuide Folders (.pst) file.