How to Convert OST to PST Format with and without MS Outlook?

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Do you need solution of “how to convert OST to PST format with or without Outlook?” Read out this article and you can convert OST file to PST file format in an easy manner. But before that, let us focus on the most common reasons to convert OST file to PST file format.

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OST file is a replica of Exchange mailbox items such as emails, attachments, contacts, calendars, notes, etc. stored on local system. This will allow users to access emails when Exchange Server is not accessible due to connectivity problems, server maintenance, downtime issues, etc. The changes are stored in OST file and synced with online mailbox as the system gets connectivity to the Exchange Server.

However, if your profile is removed from the server or OST gets damaged, you can’t access mailbox items. In these two cases, either you have to recreate OST file or convert OST file to PST file.

In case of recreating OST file, users may lose their mail items. Therefore, conversion of OST file to PST file format is the best solution.

Why it is required to convert OST file to PST without Outlook?

Here are the situations where conversion of OST file into PST format is needed:

1. MAPI Bindings

OST files are bound to specific MAPI profiles. It can be opened only on the system where MS Exchange account was configured (with cached mode enabled). If you wish to access OST file data on another system, you will have to convert OST file to PST format. After that, you can copy PST file to another system by using Outlook Import Export wizard.

2. Orphan OST file

If Exchange Server account is deleted and inaccessible of facing technical issues, then OST file is known as orphaned. Opening this file may show errors. Hence, the conversion of OST file to PST file format is the only way to access and restore OST email items.

3. Size limit issue

Over a time, OST file size grow large and this creates problems like slow down of Outlook, late email delivery, etc. Also, OST file can be corrupt hence it is required to convert old OST data into PST file.

How to export OST file to PST file with & without Outlook?

With Outlook, users can convert OST file data into PST file by multiple ways like Import/Export feature, archive feature, etc. Let us know them.

Convert OST file items to PST using Import/Export feature of Outlook

Archive feature to convert OST mailbox items to PST

In-built archive feature of Outlook can be used to convert OST file to PST file. This will also keep the size of your mailbox at an optimum level by saving old mailbox data items in archive folder. Below are the steps –

Solution to convert OST data to PST without installing Outlook

To convert OST file to PST without using Outlook, use Convert OST to PST Software. By using this program, you can convert any large, orphaned, and inaccessible OST files to PST file format. After the conversion, you can open PST file in Outlook and access the email items.

The steps of the conversion are as follows;

Final Words

You can see that OST file conversion to PST format is possible without Outlook and with Outlook. We have provided you both the ways in this article. You can simply choose the options depending on your needs.