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How to Handle Outlook error Message, "Errors have been Detected in OST File"?

How to handle Outlook Error Message, "Errors have been Detected in OST File"?


Offline Storage Table (OST file) is a file format which allows the user to work on Outlook even he is not connected with Exchange server or we can say he is in Offline mode. You can create a new email, save them, read them or delete existing emails etc. When you connect with Exchange server, these changes are automatically synchronized with Live Exchange Server.


OST files are reliable for you that help us to work in Offline mode. However, sometimes there are situations when OST file shows some error messages. It means your OST file gets corrupted and unable to update your data during the synchronization to Exchange Server.


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  1. Errors have been detected in the OST file
  2. Solutions to resolve the error message in OST file
  3. Repair OST file using SCANPST.exe
  4. Third-party Application

One of the errors is “Errors have been detected in the OST file”

First, we will know about the reasons for this error. There could be possible reasons behind it –

  • Viruses affect your OST file
  • System crash or power failure issues
  • The sudden termination of Outlook and Exchange server is in use
  • Deletion of Exchange Mailbox without any warning
  • Storage limit exceeds
  • Failure of network connection

Possible solutions to resolve the error message

  • Backup is the best solution and safe way to replace these corrupt files with new ones
  • You can recover the corrupt OST file using SCANPST.exe


If none of the methods suits you, you can opt the automated solution in the form of OST recovery.

1. Repair OST file using SCANPST.exe


It is an inbuilt utility of Outlook that helps you to detect the error of OST file. For this, you need to find the location of your OST file.

Outlook 2016 follows –

Outlook 2016: C:\Program Files (x86) \Microsoft Office\root\Office16

  • Step 1. This will open a new Windows of SCANPST.EXE. Click on the Browse button and select the desired OST file.
  • Step 2. Click on Start and after scanning, if you will get an error. Repair it by click on Repair.

2. Third-party Application


The above-stated method can’t be able to understand by a non-tech background user. If you find it difficult for you or you want to avoid it. No need to worry and get one stop solution which would be a reliable and professional third-party tool for you –GainTools OST to PST application.

The application is highly recommended by the professional experts which are enriched with various powerful features and help you to perform a safe recovery of OST file. You can simply accomplish the task with this tool and make them accessible for you. The simplified tool with the user-friendly interface will help you to operate the tool very comfortably. No issue with any size OST file. If you want to know the key functions of the software before investing in it, you can as it offers a free trial to its users to get familiar with the application before purchasing it.