Why DataNumen Outlook Repair?


#1 Recovery Rate

#1 Recovery
Rate

10+ Million Users

10+ Million
Users

20+ Years of Experience

20+ Years of
Experience

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Guarantee

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!

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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 data from them as much as possible.

Start DataNumen Outlook Repair.

DataNumen Outlook Repair

Note: Before repairing corrupt or damaged PST files with our PST recovery tool, 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 Microsoft 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 file format automatically. However, this will take additional time.

By default, DataNumen Outlook Repair will save the recovered data into a new PST 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 in a file format compatible with the Outlook installed on the local computer.

Click the Start Repair button, and DataNumen Outlook Repair will use its advanced algorithms to scan and repair the source PST file. Progress bar

Progress Bar

will indicate the data recovery 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 or other compatible email clients. The whole folder hierarchy will be reconstructed in the fixed PST file, and the recovered items, including emails and other objects, will be 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.

MORE

What is a PST file?

PST(Personal Storage Table) file is also called Personal Folders File. It is a kind of Outlook data file. Outlook uses it to store Outlook email messages and other mailbox items for pop3 accounts. Our Outlook recovery tool is mainly designed to repair corrupt PST data files.

What is an OST file?

OST(Offline Storage Table) file is also called Offline Folders File. It is another kind of Outlook data file. Outlook uses it to store data for accounts other than pop3, such as accounts on Exchange servers.

Can your Outlook PST repair software repair OST files?

Yes, our Outlook recovery software can repair OST files. You can also use DataNumen Exchange Recovery to do the task, as DataNumen Exchange Recovery is mainly designed for OST file data recovery. It can also convert OST to PST files when the Exchange server crashes or is unavailable.

Why PST file will get corrupted?

There are many reasons that will lead to PST file corruption, such as power failure, hard disk failure, viruses, oversized PST files(too large PST files, file larger than the size limitation, etc.), abnormal closing(you do not close Outlook properly), etc. We have collected a list of the common reasons. For oversized PST files, you can enable the AutoArchive configuration to prevent such an issue.

We also recommend you to have our Outlook data recovery tool on hand. Thus whenever you encounter a corrupted PST file, you can use our PST file repair tool to recover file data for you.

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, Outlook 2019, and Outlook 365.

Which versions of Windows are supported?

Our app supports Windows 95/98/ME/NT/2000/XP/Vista/7/8/8.1/10/11 and Windows Server 2003/2008/2012/2016/2019.

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

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

How to uninstall DataNumen Outlook Repair?

There are two methods to uninstall DataNumen Outlook Repair.

METHOD 1:

  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.

METHOD 2:

  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.

Can you repair Outlook PST files online?

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

I cannot open Outlook. How to repair Outlook?

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.

1. Fix corrupted PST file

If the problem comes from the corruption of the Outlook PST file, then our Outlook PST repair tool will be able to fix it. Microsoft also provides a built-in Inbox Repair Tool(scanpst.exe), but it only works for very few cases.

2. Repair Outlook installation

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 the pop-up “How would you like to repair your Office Programs” dialog box, 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. The online repair will reinstall Office without affecting the existing settings.
  6. If your Office installation is “MSI-based”, then in “Change your installation”, click the Repair button to repair the Office installation.
  7. If both quick repair and online repair do not work, then you can try to uninstall Office and then reinstall it manually.

3. Repair Outlook Profile

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

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

4. Disable Add-ins

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.

5. Update Outlook to the Latest Version

You can also use Windows Update to update your Outlook to the latest version, which may have fixed your problem.

6. Use Microsoft Support and Recovery Assistant

You can use Microsoft Support and Recovery Assistant to diagnose your Outlook problem.

7. Restore Your System

If all the above solutions do not work, you can use the “System Restore” feature in the Windows operating system to restore your system to an earlier workable state. Note in Windows 10, this feature is disabled by default. You must enable it manually beforehand.

Note: We have tested the above solutions with Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019, and Outlook 365.

Where is DataNumen Outlook Repair installed?

By default, our Outlook PST repair software 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 your Outlook recovery software 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 corrupt PST files. If that does not work, they will also use our DataNumen Outlook Repair to repair Outlook PST files.

Do you support Outlook for Mac?

Sorry but currently, Outlook for Mac is not supported yet, as it uses a different file format .OLM(Outlook for Mac) to store data.

How long does it take to repair Outlook files?

Our file recovery tool will use a very complex algorithm to analyze every byte of the PST data file. So the repair time depends on many factors. Below are some of them:

  1. The file size. If the corrupt Outlook PST 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 severity of the PST file corruption. For badly damaged PST files, it will take more time. If the PST file corruption is not severe, you can enable the “Fast scan and recovery” option in the “Options” tab to speed up the PST recovery process.
  4. 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.
  5.  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 and speeding up the recovery process.
  6. 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 damaged PST file, to speed up the repair process.

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, MS Outlook has a free built-in Inbox Repair Tool(scanpst.exe) which can be used to repair Personal Folders files(PST) 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, Inbox Repair Tool(scanpst.exe) only works for very few cases. More specifically, it can only repair PST files with minor corruptions. 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 our Outlook PST repair tool instead.

For corrupt Offline Storage File(OST), Microsoft has a scanost.exe tool to repair OST files.

Do I need to close Outlook when using your PST recovery tool?

Yes, we recommend you to close all applications, including Microsoft Outlook application, other Office apps, such as PowerPoint, etc. before using our PST file repair tool to repair Outlook files and recover Outlook emails.

How to find the corrupted PST files to be repaired?

You can do as follows:

  1. Click the Start menu.
  2. Go to Control Panel.
  3. Search for Mail. Then open it.
  4. In the Mail setup dialog box, click Data Files.
  5. You can find all MS Outlook data files and their paths.

How to repair Outlook data files with your tool?

Our tool has an extremely simple user interface. So for most of the cases, you can use it without any difficulties.

You can also find a detailed guide on how to repair Outlook data files with our software by visiting the DataNumen Outlook Repair homepage, then clicking the “How to Recover” tab. There is a step-by-step guide and a video tutorial.

Do you support Outlook for Android?

Yes, we do. You can do as follows to repair corrupt PST files created by Outlook for Android:

  1. Connect your smartphone to a PC computer.
  2. Copy the corrupt PST file from smartphone to PC.
  3. Repair PST file and recover file data with our tool.
  4. Copy the fixed PST file back to the smartphone.

Can other email clients open the fixed PST file?

Yes, all email clients compatible with PST format can open the fixed PST file generated by our Outlook repair tool. For example, you can import the PST file to your Exchange server.

Note our PST recovery tool can output PST files in two formats, i.e., Outlook 97 – 2002 and Outlook 2003 – 2019/Office 365. You need to set the file format based on the version of Outlook that will be used to open the file. If you will use the Outlook on your local computer to open the PST file, then our tool will set the output format automatically.

Can you export the fixed file in .DBX format?

.DBX file format is used by Outlook Express, which has been retried for 16 years. So, our tool does not support to output data in .DBX format.

Can you export the fixed file in .MBOX format?

.MBOX format is a Unix file format to store a collection of email messages. We do not support to output file in .MBOX format directly, but you can use Mozilla Thunderbird to import the fixed PST file and convert it into .mbox format.

Can you export recovered items to .msg files?

Our Outlook recovery software does not support such a feature. But you can do that manually, as follows:

  1. Open the fixed PST file in Outlook.
  2. Export your email to a .msg file. We recommend you to use Unicode format so that all the encodings will be kept properly.

Can you export recovered items to .eml files?

Our Outlook PST repair software does not support to do so automatically. But you can do that manually, as below:

  1. Open the fixed PST file in Outlook.
  2. Export your email message to a .msg file
  3. Download MFCMAPI based on your Outlook bitness.
  4. Start MFCMAPI.
  5. Click Advanced -> Import/Export -> Convert MSG to EML to convert the .msg file to .eml file format.
  6. Repeat the above steps for all emails you want to convert.

How to import .eml files back to Outlook?

You can do as follows:

  1. Import .eml files to Outlook Express.
  2. Import the Outlook Express emails to Outlook.

How to convert .eml files to other formats?

You can do as follows:

  1. Import .eml files to Outlook.
  2. Export the emails as .msg, .html, .rtf, and other formats.

What is the difference between the demo version and the full version?

The demo version and the full version use the same PST recovery engine. But the demo version will replace the message body with a demo text. You need to use the full version to get the actual recovered contents.

Do you support to repair large PST files?

Yes, our Outlook recovery tool can repair PST files as large as 16777216 TB. And our Outlook data recovery tool can split the large file into small parts.

Note different versions of Outlook have different size limitations on the PST file, please refer to this article for solutions.

Can you recover deleted items in Outlook?

Yes, other than fixing PST file corruptions, our PST file repair tool can also recover deleted items, including folders, emails and other mailbox items.

Will you remove duplicate emails in the output PST file?

Yes, our file recovery tool will try to remove duplicate email messages during the PST data recovery process. But sometimes, you may still find some duplicate emails in the Recovered_Groupxxx folders. This is normal.

Do I need to back up the source PST file before PST recovery?

No. Our PST recovery tool will NOT change the source corrupt PST file. It will create a new PST file containing the recovered data.

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