How To Repair A PST File For Better Email Performance

2022-12-15by Ron Johnson

When Outlook is not performing efficiently, one of the first steps to take is to repair a PST file. This can be done using Microsoft’s Scanpst.exe tool or an external third-party utility.

Why Repair a PST File?

PST file stores your Outlook data, including email messages, contacts, calendar events, and more. If the PST file becomes corrupted due to incorrect shutdowns or virus infections, it can cause slowdowns in Outlook performance or even prevent it from starting. By repairing the PST file, you can ensure that Outlook runs smoothly and avoid any potential data loss due to a corrupt file.

Using Scanpst:

Scanpst is a built-in utility in Microsoft Outlook and Windows that can repair PST files. To run Scanpst, open the “Start” menu and type “Scanpst.exe” into the search field. Once you have located it, double-click on it and follow the instructions to repair your PST file.

Using Third-Party Utilities:

Suppose Scanpst doesn’t work, or you want a more comprehensive solution to repairing PST files. In that case, you may consider using a third-party utility such as Stellar Phoenix Outlook PST Repair or Remo Repair Outlook (PST). These utilities provide advanced features such as deep scanning of damaged files, previewing recoverable items before saving them, and support for large PST files.

A corrupted PST file can cause several issues with Outlook, including poor performance, data loss, and even the inability to open emails. Fortunately, there are ways to repair a PST file and improve your email performance.

In this guide, we'll explain how you can use the Microsoft Inbox Repair Tool (Scanpst.exe) to restore your PST file back to its original state.

Step 1: Locate Scanpst.exe

The first step in repairing your PST file is locating the Microsoft Inbox Repair tool on your computer. The application is part of every version of Microsoft Office and Windows OS, so it should already be installed on your system. To locate the program on your machine, search for “Scanpst.exe” on your hard drive using the search bar in File Explorer or Finder.

Step 2: Run a Scan

Once you have located the executable file for the Inbox Repair tool, double-click it to launch. You will be prompted to select a PST file to repair; this should be the same PST file that appears corrupted when opening Outlook. If you do not know the exact location of your PST files, you can use Outlook’s ‘Account Settings’ menu to find them. Once selected, click 'Start', and Scanpst will run diagnostics on your PST file.

Step 3: Preview Results

When the scan is complete, you will be given an overview of the repair results. Here, you will be able to see the number of errors detected and fixed during the scan and a log of what was repaired. If any items were found to be corrupted beyond repair, they would also be listed here. You can then choose to ‘Repair’ or ‘Cancel’ based on these results.

Step 4: Restore Data

If you opted for Repair, you would now select a destination location for your restored PST file. It is important to note that this should not overwrite your existing PST file; instead, create a new folder or drive and save it there. When complete, reopen Outlook and check that all emails have been restored correctly.


Repairing a PST file is important in maintaining the integrity of your Outlook emails and data. Fortunately, Microsoft provides an easy-to-use Inbox Repair tool, Scanpst.exe, that can help you restore any corrupted files to their original state. You may also opt for a third-party utility if you need more advanced features or support for large PST files. Either way, it is essential for keeping your Outlook email safe and secure.

Repairing your PST file can effectively improve Outlook performance and avoid data loss caused by a corrupt PST file. You can use the built-in Scanpst tool or a third-party utility for advanced features. Whichever method you choose, back up any important data before attempting to repair the file.

Following these simple steps, you can quickly and easily repair a PST file to restore your Outlook performance. Always keep backup copies of your files in case of future issues.


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Ron Johnson

Ron Johnson is a Business Advisor. He always shares his updated knowledge about Business, Marketing through Social Media.He loves traveling with family. He is a focused person. In his free time, he used to play Cricket with children. View Ron Johnson`s profile for more

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