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A corrupted OST file can pause your business communication, but with these repair steps you can restore your Outlook in minutes.



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 Outlook profile repair and recovery steps 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



  • Online Repair reinstalls Outlook components while preserving your data, resolving DLL and registry mismatches that prevent startup.
  • 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.
  • If you do not know where the .pst file is located, follow the steps in How to locate, move, or back up your .pst file.
  • 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.


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, credential loop in Microsoft 365 fixing Outlook profile, and Repairing Outlook using Microsoft Office using the in-built tool.



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.

FixTechGuide Outlook repair tutorial

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



Fortunately, most of these errors stem from configuration conflicts, corrupted data files, or outdated components that can be fixed with a few targeted steps. If your Outlook suddenly stopped opening after a Windows update, don’t panic. Most startup failures arise from minor configuration mismatches or outdated components. Following the above steps—from safe mode diagnostics to repairing data files—will restore functionality in most cases. Repairing Outlook’s .OST and .PST files often restores full mailbox synchronization and prevents email loss.

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 inbox repair tool alternative agent. The recipient display properties are changed to be consistent with the recovered recipient table.
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