office 365 outlook cannot open ost file says it is in use

For this, you need to simply close the MS Outlook and delete the OST file by navigating to its location. To overcome this, you can also try to recreate the OST file. In this situation, it becomes difficult to repair the OST file, and the error message “OST file cannot be opened”, remains as it is. Out of all the OST file-related errors, SCANPST can repair the minute errors that occur due to improper functioning of MS Outlook, but if the issue is related to the data file or server or it is a severe error the SCANPST.exe app fails to work. The SCANPST.exe fails to repair major errors but it is certainly helpful for small issues.

All you need is to open and run this application to repair the OST file. This free application is designed to remove any possible error that occurs in MS Outlook. To repair an OST file, MS Outlook already has an inbuilt application as ScanPST.exe located in the installation directory of MS Outlook. The main cause of that is the corruption of the OST file, which can be rectified by using different methods. In any of the above possible situations, when you try to open the folder in MS Outlook you will end up getting an “OST file cannot be opened” error. If various add-ins are incompatible with MS Outlook.Due to the corruption of the MS Outlook profile.Any virus attack on your local machine having MS Outlook.Any up gradation or reinstallation of MS Outlook.If the MS Outlook starts working due to any technical glitch.

Disconnection of OST file from the server.A server crash or failure due to any virus attack.This reason for OST file being corrupt could be many like: The main cause of getting this error message is when the OST file is corrupt.

What is the “OST File Cannot Be Opened” Error? There are several OST file errors which you might get while working on MS Outlook but, we will discuss here why you get the error “OST file cannot be opened”. To rectify or remove these errors, one has to first understand what causes such errors in the OST file. There is a reason for every error message that you get while using MS Outlook.

Office 365 outlook cannot open ost file says it is in use