Tech Peak » There are Two Free Methods for Converting an OST File to a PST File.

There are Two Free Methods for Converting an OST File to a PST File.

by Neshu
ost to pst

In offline (Cached Exchange) mode, Microsoft Outlook saves all Exchange mailbox data in a local file named OST file. When the Exchange connection is re-established, the changes made by the user in offline mode are updated to the server mailbox. Exchange Server crashes and disasters, Exchange mailbox deletions, and other events have no effect on the OST file because it is stored on the user’s computer. As a result, in the event of a disaster, Exchange administrators and end-users can use OST files to restore user mailbox data through manual methods for converting an OST file to a PST File or you can go with the Proficient OST to PST converter Software.

Here are some Scenarios in which Converting an OST File to a PST File is Extremely Beneficial:

A small number of Exchange mailboxes are removed from the server.

Do you need to back up a couple of Exchange mailboxes?

An Exchange user wants to rebuild his OST file, but there is some data in the OST file that has not been saved.

Due to Exchange corruption, server crash, and other factors, EDB files are inaccessible, and users require immediate access to their emails.

If you can log in to Outlook with the same Exchange profile, you can convert any OST file to PST using one of several methods. Here are some native methods for converting OST to PST:

  • Data from your mailbox can be exported to a PST file.
  • OST emails should be archived.
  • Using a third-party tool, convert OST to PST.

Method 1: Create a PST File From your Mailbox.

Using the Exchange account that was used to create the OST files, log in to Outlook. Follow this simple procedure to export OST mailboxes to PST:

  1. Click Import & Export under Files >Open & Export.
  2. After selecting Export to a file.
  3. Next after selecting the second option, Outlook Data File (.pst).
  4. Hit the Next after selecting the folder you want to export.
  5. Select the location where you want the new PST file to be saved and the options for duplicate items.

Note: Providing a password for the PST file is an optional step, but you can skip it if you don’t want to.

Method 2: Save OST emails to PST using ‘Archiving’.

You can save the items from the OST file in a separate PST file by enabling the Auto Archive method in Outlook. This method aids in keeping the size of your mailbox under control. When the mailbox grows in size and there are multiple older messages that you do not need to keep in the mailbox, you can easily move them to the archive folder. To enable auto archiving in Outlook, follow these simple steps.

  • Go to File, and then Options in the Outlook application.
  • Select Auto Archive Settings from the Advanced menu.
  • Choose the number of days you want auto-archiving to run for. Select the archived file’s destination folder, as well as the archiving options, and then click OK.

This will save mailbox items from your OST file to your PST file according to your archiving settings.

Without an Exchange Profile or Server Connection, Convert OST to PST.

OST to PST is a powerful tool that can convert up to 25 items from each OST folder to PST for free. It has the advantage of being able to convert offline OST files to PST without requiring an Exchange profile or Exchange Server connection. A simple interface that allows the user to select OST files, recover items, including those that have been deleted, and convert them to PST format. Converter also has the ability to convert multiple OST files to PST at once. Let’s take a look at how the tool works:

Only when using Outlook with the original Exchange account can you manually convert OST to PST. However, even without the original Exchange profile and Exchange Server connectivity, the software converts the OST to PST format. It also has a lot of advanced filtering and saving options. In addition, you can free convert 25 items from each folder to PST.


The blog proposed and explained various methods for converting OST files to PST files, including archiving OST files. Exporting OST files to PST using Outlook’s Import/Export function, and using a professional OST to PST Conversion tool. This conversion is useful in a variety of situations. Including when the server is down or unavailable and OST data must be retrieved.

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