How to Deal With Microsoft Outlook Cannot Find OST File Issue?

OST file of Outlook is really important for the users who work in offline mode. Whenever Outlook is configured with Exchange Server or IMAP account, OST file is created. In the case of Exchange Server downtime, all work done in offline mode get saved in OST file. As the connection is established again, the OST file gets synchronized with Exchange Server automatically. But, like any other file format, OST file is also prone to errors, corruption and other damages. Thus, sometimes is unable to locate OST file, due to which it starts generating errors. Hence, in this blog, we will talk all about Microsoft Outlook cannot find OST file error with respective solutions.

Consider a Scenario:

A few days ago, I came across a query where a user needs to change the default location of the OST file of Outlook. However, it is not a big deal in the case of PST file. But, when it comes to the OST file, it becomes a little more complex and tricky.

In order to change the OST file default location, a user tried to alter the registry entry for the current Outlook profile. But, it did not work accordingly. However, a new error also arises i.e., Outlook error cannot find OST file or The OST file in my Windows Outlook is missing. In actual, a user created a new Outlook profile and find out the Outlook registry entry in the Windows registry:


Here inside the PROFILE_NAME key, a user has entered the system directory path where he or she wanted OST file to be saved due to some professional reasons. When Outlook is restarted again, the following error message will pop-up:

Microsoft Outlook cannot find OST file”

What exactly has happened?

While doing all this, a user forgets to fact that the OST file is totally integrated with Outlook profile from which it is created. This is the reason it bound to the default system location also, which is mentioned in the registry.

However, a user needs to be technically strong to execute a complete script of PowerShell commands to modify the nature of Outlook. Moreover, while doing so, a user needs to be prepared for the worst situation also. For example, Outlook will stop working, or OST file will become corrupt and there might be a loss of data.

What needs to be done?

Does not matter whatever is the issue, changing the default settings of OST file has never been the solution. However, to deal with the OST file problem, the best solution is to migrate Outlook OST file data to PST format. After conversion, a user can change the location whenever required. Keeping the default location intact as original will protect OST file from any damage or corruption.

Expert Solution to Resolve Outlook Error Cannot Find OST File

After going through the scenario discussed above, the first question that strikes in the user’s mind is how to transfer OST file of Outlook to PST format. In order to do this in an efficient manner and to keep data safe, a third-party tool is recommended. Microsoft OST to PST conversion tool is one such application that let users export OST file to PST format in just a few number of clicks. Moreover, it keeps the integrity of data intact as original even after conversion. The best part of the application is that it is capable to convert corrupt, orphan, inaccessible, and damaged OST file to PST format.

Some Additional Features of OST to PST Converter:

  • Export all data items like emails, contacts, calendars, etc., from OST file
  • Recover and convert permanently deleted files from OST to PST
  • Decrypt OST emails from SMIME/ OpenPGP encryption during conversion
  • Allows to export multiple Outlook OST files to PST format in batch
  • Supports all version of Microsoft Windows OS and Outlook


Whenever any issue arises in OST file, a user starts looking for some manual tricks to solve the problem. But, it is not a reliable way to deal with OST file as it makes the situation worst. It starts generating errors like Microsoft Outlook cannot find OST file. Thus, to avoid all such errors, a user is advised to convert OST to PST format with the help of software suggested above.

No Comments

Post A Comment