How to Repair Corrupt and Damaged OST Files

Admin | Email Conversion File Repair Outlook Software Technology | 3 minutes read | Last updated on February 8th, 2023,

Microsoft has now become one of the popular email client for every organisation. It comes up with so many facilitating features and one of them is its capability to sync with Exchange server and this fusion creates OST files. There is a possibility that in the during of synchronisation process OST file may get corrupt or damaged, which results an error Therefore, in the upcoming part of the article we will discuss about this error, symptoms ,causes behind the issue and easily methods in order to resolve this problem. OST file, also known as ‘Offline Storage Table‘ file is a replica module of the complete data in the mailbox of MS Outlook. In this situations users try to find some solution to get out of this trouble, but finding suitable method is not easy. Moreover, it’s very important to find a relevant and reliable solution.


Whenever users try to open,view OST file, they will receive these types error message as mentioned below:

Reasons of Getting these Kinds of Error Messages.

  • Sudden deletion of Exchange mailbox,
  • Virus attack,
  • Synchronising, modification of Exchange profile
  • Corruption of OST files, etc.
  • Power failure,
  • Errors have been detected in the file xxx.ost

How to Repair OST Files

Solution 1: Recreating OST File

MS Exchange Server uses an Offline Outlook Data File which we call .ost files. If any problem is comes with the file, user can recreate it to get their mailbox data back. To recreate OST files, follow these steps.

Step 1. Got to Control Panel , select Mail option. In order change current profile name, tap on Show Profiles in Mail Set-up box.

Step 2. Select the profile name and Tap on Properties.

Step 3. Tap on E-mail Accounts to go to Account Settings option.

Step 4. Within Account Settings, Tap on Data Files and select file path.

Step 5. From Outlook Data Files, chose Open File Location. File explorer Window with desired file location will get opened

Step 6. Close Account Settings box and Mail Set-up box by taping on cross button on right corner on the screen. Go to file explorer window which you opened earlier. Delete that particular corrupted OST data file by right taping on it. The next time when you open MS Outlook, a new .ost file with original data is created for the account.

Solution 2: Use In-Built Microsoft Outlook Inbox Repair Tool

Step 1. In default location for MS Office program file, search Scanpst.exe tool and run it. A Microsoft Outlook Inbox Repair Tool box is showed up, Tap on Browse to choose that particular corrupted OST file path.

Step 2. Tap on Start button to beginning the process of repair.

Step 3. A dialog box signalling errors in file is showed up. For take a backup of scanned file before starting repairing, an option is also available for the users. Select check-box to save a backup otherwise do not select it. User can see the details by taping on Details option. Click on Repair to fix the corrupted .ost file.

Step 4. Now a dialog-box with text Repair complete is showed up which shows that repair process is successfully complete.

Third Party Tool

After the successful migration users didn’t want to face same problem in future. Then user can use the OST to Office 365 Converter. This tool transfer all OST data directly into your Office 365 account. In fact, everyone prefers to use this tool. OST files is delicate data file records that need more inspection than usual when user use this third party tool they can transfer there OST file to Exchange online account directly and secure there valuable data for future uses.

  • Efficiently Transfer OST files to O365 Directly
  • Maintain OST email folders hierarchy during migration is done
  • Allows to import large OST files into Office 365 without any hurdle
  • Support all Outlook & Office 365 version to make migration easier & smoother
  • Free demo edition to evaluated software features

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