Why DataNumen Outlook Repair?

#1 Recovery Rate

#1 Recovery

10+ Million Users

10+ Million

20+ Years of Experience

20+ Years of

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100% Satisfaction

Recover Much More than Our Competitors

Recovery rate is the most important criterion of an Outlook recovery product. Based on our comprehensive tests, DataNumen Outlook Repair has the best recovery rate, much better than any other competitors, including the Inbox Repair tool (scanpst.exe) and other PST repair tools, in the market!

Average Recovery Rate

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Learn more about how DataNumen Outlook Repair smokes the competition

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Extremely Simple Interface

Solution for Following Common Errors and Problems in Outlook PST File



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Main Features in DataNumen Outlook Repair v8.7

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Using DataNumen Outlook Repair to Recover Corrupt Outlook PST Files

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When your Outlook PST files are corrupt or damaged and you cannot open them normally in MS Outlook, you can use DataNumen Outlook Repair to repair Outlook files and recover the data from them as much as possible.

Start DataNumen Outlook Repair.

DataNumen Outlook Repair

Note: Before repairing corrupt or damaged PST files with DataNumen Outlook Repair, please close Microsoft Outlook and any other applications that may modify the PST file.

Select the corrupt or damaged Outlook PST file to be repaired:

Select Source File

You can input the PST file name directly or click the Browse button to browse and select the file. You may also click the Find button to find the PST file to be repaired on the local computer.

If you know the Outlook version of the source PST file to be repaired, then you can specify it in the combo box Select Format beside the source file edit box, possible formats are Outlook 97-2002, Outlook 2003-2010, Outlook 2013-2019/Office 365 PST file and Outlook 2013-2019/Office 365 OST file. If you leave the format as "Auto Determined", then DataNumen Outlook Repair will scan the source PST file to determine its format automatically. However, this will take additional time.

By default, DataNumen Outlook Repair will save the recovered data into a new file named xxxx_fixed.pst, where xxxx is the name of the source PST file. For example, for the source PST file Outlook.pst, the default name for the fixed file will be Outlook_fixed.pst. If you want to use another name, then please select or set it accordingly:

Select Destination File

You can input the fixed file name directly or click the Browse button to browse and select the fixed file.

You can select the format of the fixed PST file in the combo box Select Format beside the fixed file edit box , possible formats are Outlook 97-2002 and Outlook 2003-2019/Office 365. If you leave the format as "Auto Determined", then DataNumen Outlook Repair will generate the fixed PST file compatible with the Outlook installed on the local computer.

Click the Start Repair button, and DataNumen Outlook Repair will start scanning and repairing the source PST file. Progress bar

Progress Bar

will indicate the repair progress.

After the repair process, if the source PST file can be repaired successfully, you will see a message box like this:

Success Message Box

Now you can open the fixed PST file with MS Outlook. The whole folder hierarchy will be reconstructed in the fixed PST file, and the emails and other objects will be recovered and put to their original folders. For the lost & found objects, they will be placed in Recovered_Groupxxx folders.

More Information

DataNumen Outlook Repair 8.7 is released on March 11th, 2022

  • Support Windows 11.
  • Fix some minor bugs.

DataNumen Outlook Repair 8.6 is released on July 10, 2021

  • Support Turkish.
  • Fix some minor bugs.

DataNumen Outlook Repair 8.5 is released on January 26th, 2021

  • Support Spanish, French, German, Italian, Portuguese, Russian, Japanese, Korean and Simplified Chinese.
  • Fix some minor bugs.


Which versions of Outlook are supported?

Currently, our app supports Microsoft Outlook 97, Outlook 98, Outlook 2000, Outlook 2002, Outlook 2003, Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, and Outlook 2019.

What are your product’s advantages over other similar apps?

You can see a complete competitive comparison of our product with other similar Outlook PST repair apps in the market.

How to uninstall DataNumen Outlook Repair?

There are two methods to uninstall DataNumen Outlook Repair.


  1. Click the Start menu.
  2. Go to the Control Panel.
  3. Select Programs> Uninstall a program.
  4. Press and hold (or right-click) on DataNumen Outlook Repair(Demo Version) or DataNumen Outlook Repair(Full Version) and select Uninstall. Then follow the instructions on the screen to uninstall the program.


  1. Click the Start menu.
  2. Click All Programs.
  3. Find the DataNumen Outlook Repair program group, and click it.
  4. Click Uninstall DataNumen Outlook Repair to uninstall the app.

Do you support online repair of an Outlook PST file?

We’re sorry, but we do not yet offer online repair service.

I cannot open Outlook. Can your product fix the issue?

Many possibilities may make you fail to open the Outlook app. Therefore, we recommend you diagnose the problem with some troubleshooting methods to determine the reason.

If the problem comes from the corruption of the Outlook PST file, then our product will be able to fix it.

If the problem comes from the installation of your Outlook app, then you can repair Office via the following steps:

  1. Click the Start menu.
  2. Go to “Control Panel”.
  3. In the “Programs” category, selectUninstall a program”.
  4. Select the Office product you want to repair, and click “Change”.
  5. If your Office installation is “Click-to-Run” type, then in “How would you like to repair your Office Programs”, you can select the Quick repair option to replace the corrupt files in the current Microsoft Office installation, including those for Outlook. If that does not work, then you can select the Online repair option to perform a thorough repair.
  6. If your Office installation is “MSI-based”, then in “Change your installation”, click the Repair button to repair the Office installation.

If the problem comes from your Outlook profile, then you can repair it via the following steps:

  1. In your Outlook,  click “File”.
  2. Then click “Account Settings”> “Account Settings”.
  3. In the “Email” tab of the pop-up window, select the profile, then click the Repair button.
  4. Follow the instructions to repair the Outlook profile.
  5. Restart the Outlook application.

If the problem comes from Add-ins, then you can try to disable the Add-ins, as follows:

  1. In your Outlook, click “File”.
  2. Then, click “Manage Add-ins”.
  3. In the “Manage Add-ins” section, find the “Turned on” column, then uncheck to disable the add-in.

Note: We have tested the above solutions with Outlook 2010, Outlook 2013, Outlook 2016, and Outlook 2019.

Where is DataNumen Outlook Repair installed?

By default, DataNumen Outlook Repair will be installed in the following directory in a 64bit Windows system:

C:\Program Files (x86)\DataNumen\DataNumen Outlook Repair\

or in the following directory in a 32bit Windows system:

C:\Program Files\DataNumen\DataNumen Outlook Repair\

Does DataNumen Outlook Repair support Windows 10 or Windows 11?

Yes, the latest version of DataNumen Outlook Repair fully supports 32bit and 64bit versions of Windows 10 and 11.

Will Microsoft support be able to fix my corrupt PST file?

In general, Microsoft support will suggest you use the built-in Outlook PST repair tool, i.e., Inbox Repair Tool(scanpst.exe), to scan and repair your PST file. If that does not work, they will also use our DataNumen Outlook Repair to repair your file.

Do you support Outlook for Mac?

Sorry but currently, Outlook for Mac is not supported yet.

How long does it take to repair Outlook files?

The repair time depends on many factors. Below are some of them:

  1. The file size. If the file is huge, it will take a long time since our program will scan and analyze every byte in your file, which is rather time-consuming. For example, a 50GB PST will usually take about 5 to 6 hours to repair.
  2. The complexity of the file. If there are many emails, folders, and other objects in your file, it will usually take more time to repair it. Also, a recently created file is usually less complex than one created several years ago. So it will generally take less time to fix a relatively new file.
  3. The hardware and software configurations of your computer system. A computer with a faster CPU, more cores, and more memory will usually perform faster. Also, a computer with the latest Windows will be able to utilize the full capability of the hardware, so it will also perform faster.
  4.  Bitness of your Windows system and Outlook. We recommend you to run 64bit DataNumen Outlook Repair with 64bit Windows and Outlook, since DataNumen Outlook Repair can use all available memory if your system has more than 4GB memory, significantly improving the performance.
  5. Close all other apps when repairing. It will consume a lot of time and resources to fix a huge PST file. Therefore, we recommend you to close any other apps when using DataNumen Outlook Repair to repair the file.

Can I pause/resume the repair process?

Sorry but that is not possible. If you start a repair process, the only option is to stop it. Later if you want to re-repair the same Outlook file, you need to start over and initiate the repair process from the beginning.

Are there any free tools for PST recovery?

Yes, Outlook has a free built-in Inbox Repair Tool(scanpst.exe) which can be used to repair PST files with minor corruptions.

For different versions and bitness of Outlook and Windows, the locations for scanpst.exe are also quite different. You can utilize the following table to find the directories of scanpst.exe:

Install Type 32bit Windows 64bit Windows
Outlook 2016/2019(32bit) Normal C:\Program Files\Microsoft Office\Office16 C:\Program Files (x86)\Microsoft Office\Office16
Outlook 2016/2019(64bit) Normal N/A C:\Program Files\Microsoft Office\Office16
Outlook 2016/2019(32bit) Click to Run C:\Program Files\Microsoft Office\root\Office16 C:\Program Files (x86)\Microsoft Office\root\Office16
Outlook 2016/2019(64bit) Click to Run N/A C:\Program Files\Microsoft Office\root\Office16
Outlook 2013(32bit) Normal C:\Program Files\Microsoft Office\Office15 C:\Program Files (x86)\Microsoft Office\Office15
Outlook 2013(64bit) Normal N/A C:\Program Files\Microsoft Office\Office15
Outlook 2013(32bit) Click to Run C:\Program Files\Microsoft Office\root\Office15 C:\Program Files (x86)\Microsoft Office\root\Office15
Outlook 2013(64bit) Click to Run N/A C:\Program Files\Microsoft Office\root\Office15
Outlook 2010(32bit) Normal C:\Program Files\Microsoft Office\Office14 C:\Program Files (x86)\Microsoft Office\Office14
Outlook 2010(64bit) Normal N/A C:\Program Files\Microsoft Office\Office14
Outlook 2010(32bit) Click to Run C:\Program Files\Microsoft Office\root\Office14 C:\Program Files (x86)\Microsoft Office\root\Office14
Outlook 2010(64bit) Click to Run N/A C:\Program Files\Microsoft Office\root\Office14
Outlook 2007(32bit) Normal C:\Program Files\Microsoft Office\Office12 C:\Program Files (x86)\Microsoft Office\Office12

This looks a bit complex. So a better way is just to search for “scanpst.exe” on your local computer. As long as you have installed Outlook, you will be able to find it.

However, scanpst.exe only works for very few cases. More specifically, only PST files with minor corruptions can be fixed by it. For badly damaged PST files, it will crash, stop working, or just report an error that it fails to repair the file. In such cases, you need to use DataNumen Outlook Repair instead.

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