How to Recreate Outlook OST Files Even After Corruption

The awkward behaviour shown by OST file sometimes chills the spine of the user. It happens generally in the Exchange Server due to virus attack, unintentional deletion of user account, sudden system shutdown or power failure, bad hard drive sectors, synchronization errors, bugs in storage devices, and sometimes due to hardware anomalies. To get rid of such issues, user seeks repair or recovery of files using third-party tools. The assistance from a third-party is OK, but what about reliability? The reliability is quite questionable. So, the first trial with in-built facilities or solutions is encouraged to rectify the issue on our own.

With the change in technology, Microsoft has also upgraded the inbuilt repair and diagnostic tools. Each version has its own diagnostic strategy and own plans to deal with it. On contrary, Microsoft has provided different utility to fix OST related issue.

Read also: Free Methods to Convert OST to PST File

Microsoft simply don’t appreciate repair of OST files as the data may get affected, therefore, it is suggested to re-create the OST files.

How to Recreate OST Files Manually?

To learn how to recreate the OST files, follow these steps:

  1. Close MS Outlook.
  2. From Control Panel, open Mail.From Control Panel, open Mail
  3. In Mail Setup dialog box, click Email Accounts.Mail Setup dialog box, click Email Accounts
  4. Click Data Files tab, select Exchange Account followed by opening Open File Location.Select Exchange Account followed by opening Open File Location
  5. The file explorer opens a platform for the Exchange Account. The Account Settings and Mail Setup dialog box remain open in the background of file explorer window.
  6. Close the Account Settings and Mail Setup dialog box.
  7. Now, from the File Explorer window, open exchange data file (OST) and click ‘Delete’. When MS Outlook is restarted (being in connection or configuration with the Exchange Server), a new OST file will be created automatically at the same default OST file location.
  8. Note: Rather than deleting the .ost file from the default location, you can rename it also to a different name like old.ost. The process will work the same in both the conditions.

There is another way to recreate the Exchange OST file in older Outlook versions like Outlook 2010. Read the following steps to get the process.

  1. Exit the Microsoft Outlook application.
  2. Open the Control Panel and double-click on the Mail option to open it.
  3. On the Mail Setup box, click on E-mail Accounts option.
  4. From the E-mail tab, go to the Exchange account, select it and then click on Change option.
  5. Clear the checkbox saying Use Cached Exchange Mode and then click on More Settings…
  6. Move to the Advanced tab and click on the Offline Folder File Settings option.
  7. Select the Disable Offline Use option and Yes to confirm.
  8. Click on the Offline Folder File Settings option again and click on OK.
  9. Click Yes.
  10. From the Cached Exchange Mode Settings, select the checkbox saying Use Cached Exchange Mode. Then, click OK>Next>Finish.
  11. Finally close the opened Account Settings and Mail Setup dialogue boxes.
  12. Start the Outlook application and let the configuration complete.
  13. A new and updated OST file is created.

This solution may work when followed in correct order. However, if more complicated issue ties up in the main field, then it is better to gain assistance from the reliable third-party tool. The third-party tool like OST to PST converter tool is designed to sweep out the OST related issues irrespective of the platform from where it was originated.

Download Now

The user-friendly GUI of third-party tool is customized for naive users and makes it easier for even non-technocrats. To evaluate the features of the tool prior purchasing it, user can download the trial version that works just like the licensed one except for some saving limitations. If the tool works as your requirements, then just purchase the licensed version to go swift in the process.


The blog explained the whole manual process of recreating the OST file in order to fix the corruption issue. While one can try this process of recreating the Exchange data file and on the other hand a reliable Best OST to PST solution is available as well for fixing all OST corruption issues.


  1. I am a Exchange user and apply above method to fix corrupt OST files and believe me it was effective. With this method I got my OST files back in healthy position.

  2. Because of corruption in OST file I wanted to recreate OST files into MS Outlook. My friend suggests me this blog method and I have successfully accessed my OST file after recreating them.

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