Here you need to search out the process with names of вЂ outlookвЂ™, вЂcommunicatorвЂ™, вЂLyncвЂ™, вЂUCMAPIвЂ™В and stop all these processes.Then tap on More Details and visit the Processes tab.Now you will see various option click on the task manager.

Do right click on the area of the task bar.

To know that any process of the Outlook is operating in the background and to stop them follow the given steps:. To resolve the PST file error you had to search and shut down all the programs that have direct connections to the PST file. Methods to Fix Error Cannot open Outlook Data FileД«elow I shared the 3 best techniques that helps users to fix the error of PST file.

Virus attack, unexpected shutdown of the system or errors of the Outlook, etc.

Oversized of the PST file from its limit.

Crash of the MS Outlook application due to sudden power or hardware failure.

PST file gets corrupt, inaccessible, or deleted.

So here I listed the most common reasons that can lead to the error вЂњPST file cannot be openedвЂќ which are :. Reasons behind the error Outlook PST file cannot be Opened So letвЂ™s know the causes behind this error. All the copies of mailbox data get saved in the OST file format.Д«ut sometimes the users had to face the error in the PST file like user cannot open Outlook data file or PST files become inaccessible. Microsoft Outlook created the OST file when the users do the configuration of their account with Exchange settings. And after reading this post you will be able to move the data of the corrupted PST file to a new PST file.

Also, you will get the solution to fix this Outlook error by using the easy techniques available in the post. In Short:- In this guide, we will discuss the reasons behind the error Cannot open outlook data file.

Microsoft outlook cannot attach file