How to fix the problem of OST file corruption


OST file is Offline Storage Table which comes with Microsoft Outlook.  The OST file is an offline folder file with the file extension .ost that holds data of the outlook profile when you are in offline mode. These files will keep a copy of emails and other attributes of the outlook from Exchange Server.

If your .ost file is not opening then it is been corrupted or damaged and it is required to fix OST file. Let me explain this with practical scenario. Assume that you were working in offline mode on outlook. Due to sudden power surge the system went off. Most of the times in such scenarios the header of outlook ost file get damaged and thus it refuses to open. In such situations you will lose all the data stored in that ost file as you cannot access the file. If you have to repair that corrupted file, then you need to take assistance of repair software. There are many third party repair software available online to fix OST files.

The outlook .ost file gets corrupted due to various reasons. They are virus attack, mal functions, false operation, sudden termination of the Outlook, etc. And when the file is corrupted the data within that file is inaccessible and whenever you try to open it error messages are displayed. Now let us see some common errors of .ost file that is displayed while trying to open damaged .ost files:

  • Cannot open the emails folder. “The file xxx.ost  is not an offline file”
  • Microsoft Exchange Server reported Error.
  • Unable to expand the folder.
  • OST file cannot be accessed in Outlook.

If you are seeing such errors while opening the .ost file then, it is true that your file is damaged. To avoid this circumstances make sure that you always have a backup of your data. If backup is not available then to fix this damage you have to go for third party repair tool. The repair tool can easily convert the damaged OST file to PST file and retrieves all emails, contacts, journals, tasks and other attributes of the file.  The repair tool helps you to recover all essential data that was previously present in OST format and coverts it to a useful PST format.

The repair tool follows some file integrity process to fix damaged OST files. The steps to follow to repair a corrupt .ost file are:

  1. Download the demo version of the repair tool on the system where damaged .ost file is present.
  2. Run the software and select the corrupt .ost file to repair.
  3. The software scans the damaged file and gives a preview of all emails.
  4. It will ask you to select recovered emails in .pst or .eml or .msg format. Select the required format and save the emails.

Now you can use those damaged file contents in a new .pst file. The repair software can recover all attributes of the corrupt .ost files from various outlook versions. If you are facing problem of how to fix the damaged .ost files then try with this repair tool. You can download the demo version and if you are satisfied with its recovery process, you can purchase the full version of the software.