Have you faced a situation in which you need to perform conversion of OST to PST? Consider this scenario: You are leaving your current organization in which you used Outlook with Microsoft Exchange. You want to take all your email messages, calendar, contacts and other mailbox items with you. As you are leaving the company, your account will be deleted from the MS Exchange Server.

If you take the OST file with you, you cannot open it as the account has been deleted in which the OST file was created. You cannot view or read your OST files in both of these conditions:

  • If you do not have access to the computer or the account which was used to create the OST file, or
  • If you do not have a restore point.

Also, Know About: Repairing PST file

What will you do in such a situation? You need to import all the data from an OST file to a new PST file so you can open the file in MS Outlook. There are some manual techniques which only require MS Outlook, nothing else.

Repair and convert OST to PST

Technique No. 1: There is an archive feature in Outlook by using which you can move or copy many items to a new PST file. The archive technique is considered as the most effective one when a user wants to move each and every mailbox items (except contacts) from the OST mailbox.

In the Tools menu, click on Options > Other > AutoArchive. Apply it to all the folders. Then go to the File > Archive and run it.

Technique No. 2: The Export technique in MS Outlook is generally a quick and easy way to move all the mailbox data (including calendar and contacts) from an OST file to a new PST file.

Technique No. 3: With the help of MS Outlook, you can create a new PST file and after then, you can drag all the folders which you want take to the new PST file.

Technique No. 4: Besides all these techniques, you can also email the data which you want to move to your personal email address. This technique is helpful when there are not too many items to move. Select the mailbox item(s), right click and choose Forward to forward the selected item(s). But if you too many items, you can drag them to a folder in My Documents on your system. ZIP the folder and email it to your email address.

If these techniques may not work or fail, you can try a third-party converter tool that will allow you to convert an OST file into PST format. SysInfoTools OST File Recovery is an advanced way to handle corrupted OST files of Exchange Outlook. It not only repairs the corrupted OST files but also converts them into PST and other formats, such as MSG, DBXEML, MBOX, and archive. The archive format includes EML, VCF, ICS, and text. Or if you only want to view or read the OST files, you can download free OST File Viewer from SysInfoTools. This tool will allow you to view the OST files (normal as well as corrupted) without requiring Outlook with Exchange Server or any other program.