Repair Outlook Outlook 365, 2021, 2019, 2016, 2013, 2010, 2007

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Repairing Outlook’s .OST and .PST files often restores full mailbox synchronization and prevents email loss.



FixTechGuide Outlook repair tutorial

For instructions about how to unhide files and folders, see your operating system documentation. For persistent issues, use FixTechGuide’s automated tools to perform deep diagnostics and security checks. Stay updated, back up regularly, and enjoy uninterrupted productivity in your Outlook workspace. When Outlook is not working, or Outlook keeps crashing pondering upon the cause won’t be of use unless it is a regular issue. I would encourage readers to fix it by trying repair corrupted OST in Outlook the solutions in this article. While carrying out the above methods it is advisable to close Outlook beforehand.

FixTechGuide Outlook repair tutorial

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



  • Many users encounter startup freezes, profile loading loops, and crashes following major Windows patches or Office updates.
  • The last option in this list is to repair the Outlook data file.
  • Thousands of users face corrupted OST files, sync errors, and missing mailbox data after system updates or unexpected shutdowns.
  • This command deletes the custom folder views, restoring default configurations.
  • For instructions about how to unhide files and folders, see your operating system documentation.
  • Follow each method carefully, keep your account synced to Office 365, and maintain regular backups to avoid future data loss.


Therefore, structures such as BTrees and reference counts, are checked and repaired as necessary. These low-level objects have no knowledge of the upper-level structures, such as messages, calendar items, and so on, that are built upon them. After you run the Inbox Repair tool, you can start Outlook and recover repaired items. Optionally, you can try to recover additional repaired items from the backup personal folder. Solutions like opening Outlook in safe mode, Outlook Stuck on Synchronizing Folders fixing Outlook profile, and Repairing Outlook using Microsoft Office using the in-built tool.



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 (



If this method works, try disabling your add-ins and any recent customizations that you may have made in Outlook to permanently fix the issue. If the issue continues to trouble you, then you have to continue with the solutions mentioned below. Find solutions to common problems or get help from a support FixTechGuide fix for stuck folders agent. The recipient display properties are changed to be consistent with the recovered recipient table.
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