How to Identify and Repair a Corrupted OST File

Microsoft Outlook uses an Offline Storage Table (OST) file as a database file to store emails, notes, contacts, and other data for offline access. If this file becomes corrupt or damaged then it can cause serious problems with Outlook such as not being able to open your emails or the inability to send or receive new mail.

In this article we’ll look at how you can identify and repair a corrupted OST file so that you can get back up and running as quickly as possible.

Identifying a Corrupted OST File:

To identify if an OST file is corrupted, pay attention to any changes in Outlook’s behavior when attempting to access email messages, calendar entries, tasks, etc. If you experience any errors when trying to access your Outlook data or if you notice that the program is running slower than normal, then these are signs of a corrupted OST file.

Repairing a Corrupted OST File:

The first step in repairing a corrupted OST file is to use an efficient third-party software tool such as Data Numen Exchange Recovery to restore it back to its original state. we can use this software to scan and repair any type of corruption issues on Outlook’s OST files including errors caused by virus attacks, hardware failures, unexpected system shutdowns, power outages etc.. To do this simply install the program onto your computer and follow the on-screen instructions. Once it has finished scanning and repairing the OST file you will be able to access all of your Outlook data once again.

We hope that this article has been helpful in identifying and repairing a corrupted OST file. Remember to always use an efficient third-party software tool such as DataNumen Exchange Recovery . This will ensure that the repair process is safe and successful. With the help of this program, you’ll be able to restore your Outlook data in no time and get back up and running again without any issues.

A Microsoft Outlook OST (Offline Storage Table) file is a local, offline copy of your Exchange mailbox stored on your computer. This allows you to access your emails, calendar events, contacts and other Outlook items even when disconnected from the Exchange server. However, due to various reasons like power failure, sudden shutdown or virus attacks, these OST files can become corrupted. In such cases, it is important to identify and repair the corrupt file before attempting to use it again.

Diagnosing a Corrupted OST File:

The first step in identifying and repairing a corrupted OST file is to diagnose the issue. You can do this by opening Microsoft Outlook and attempting to open the corrupted OST file. If you receive an error message indicating that the file has been damaged or cannot be accessed, then it is likely that the file has indeed been corrupted.

Repairing a Corrupted OST File:

Once you have identified that the OST file is corrupted, there are several methods you can use to try and repair it. Use Microsoft Outlook’s Inbox Repair Tool (Scanpst.exe) to automatically scan and fix errors in the OST file. It will address common issues with Outlook data files. Another option is to use third-party software which is specifically designed to repair damaged or corrupted PST files. This tool has an advanced recovery algorithm which quickly recovers lost, deleted or inaccessible emails from corrupt PST files.

Finally, if all else fails, you can always try restoring the file from its most recent backup version. If none of these methods work, then you should contact your IT department or an Outlook specialist for help.


In conclusion, the best way to identify and repair a Corrupted OST File is to first diagnose the issue by attempting to open it in Microsoft Outlook. If your file is corrupted, you can use the Inbox Repair Tool or third-party software for repair. Choose based on the extent of corruption and file type. Finally, if all else fails, you can always try restoring the file from its most recent backup version. Following these steps enables you to effortlessly regain access to any lost emails and other Outlook items stored in the corrupt OST file.

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