How to Repair a Corrupted PST File in Microsoft Outlook

Corruption in PST files is a common problem for Microsoft Outlook users. Corrupted PST files can lead to abnormal functioning of the application, data loss, and other problems. 

In order to repair corrupt PST files, it’s important that you understand what causes them and the available methods you can use to fix them.

Diagnose Corruption:

Before attempting any kind of repair or recovery process, it’s essential that you first diagnose whether your PST file is actually corrupted or not. To do this, you should use a specialized tool like ScanPST.exe provided by Microsoft. This tool uses an algorithm to scan and detect errors in the PST file so you can determine whether there are indeed any issues with it or not.

Fix Corruption:

Once you’ve identified that your PST file is corrupted, there are several methods you can use to repair it. If the corruption is minor, then you may be able to fix it using ScanPST.exe itself. However, if the damage is more severe, then you should consider using a third-party data recovery tool. This tool scans your corrupt PST file and extracts all of its contents, allowing you to save them in healthy state again. 

Backup you’re Data:

In order to protect yourself from future data loss or corruption issues with your Outlook application, it’s important that you regularly back up your emails and other data stored in the PST file. You can either use the built-in backup feature provided by Microsoft or use a third-party data backup tool to back up your emails and other important data.

Microsoft Outlook is one of the most commonly used applications for day-to-day activities such as email, task management and scheduling. Unfortunately, it can become corrupted due to a variety of reasons including viruses, incorrect installation or even user error. This can lead to data loss which is both inconvenient and time consuming. Luckily, there are ways to repair and recover your Outlook PST file with the help of specialized tools and manual methods. 

Microsoft Outlook is a popular email application used by many businesses and individuals. Unfortunately, there are times when the PST file associated with an Outlook profile becomes corrupted, resulting in data loss and other issues. 

Fortunately, there is a way to repair the PST file in order to retrieve lost data and restore Outlook functionality. 


  1. First, open Microsoft Outlook and go to File > Account Settings > Data Files.
  2. Highlight the PST file that appears to be corrupted or damaged, then select Open File Location from the context menu that appears when you right-click on it. 
  3. Once you’ve navigated to the location of the corrupt PST file, locate a second copy of it that has a “bak” extension (e.g., pstfile_copy.pstbak). If no such backup exists, skip to Step 4.
  4. Open the Inbox Repair tool (scanpst.exe) by going to Start > Programs > Microsoft Office > Office Tools > Inbox Repair Tool. 
  5. When asked, enter the location of the corrupt PST file you located in Step 2. The tool will then attempt to repair it. 
  6. If successful, a message will appear stating that “The file has been repaired” and asking if you would like to save a copy of the new PST file in its original location or choose another destination for it. Select whichever option is preferable and click OK. 
  7. If unsuccessful, try running the same process again but this time with the backup PST file located in Step 3.
  8. After the repair process has been completed, restart Microsoft Outlook and check that all of your data is now accessible. 


Repairing a corrupted PST file in Microsoft Outlook can be done by following the steps outlined above. If successful, it will help to restore functionality and access to any lost data associated with the Outlook profile. It is important to note that if no backup copy of the PST file could be located, then some data may still remain unrecoverable. Therefore, it is always recommended that you back up important files regularly as a preventative measure against such issues in the future. 

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