How to Change OST file to Outlook PST

Are you searching for a reliable solution to change OST file to PST? If so, the blog post is here to help you. In this blog, we have discussed the steps of advance and the newly released OST to PST Converter Tool that allows you to change OST file to PST Outlook directly and in many other file formats.


Before we go through the steps to change OST file to PST Outlook, the first thing you should understand is why you are changing OST to PST:


  • If there is any data loss in Exchange Server, changing the OST file to PST can fix it.
  • Sudden crash of MS Exchange Server due to a software failure, virus attack or power failure. In such a case, a backup of the OST file can be made in PST.
  • Associated e-mails cannot be accessed during the downtime of the Exchange environment. OST data can then be copied to PST to solve the problem

Now let's start with the steps to change OST file to PST Outlook. The process can be performed manually or using a third-party tool.

Method 1: Using Archive Method to Change OST file to PST Outlook

With this built-in feature, you can copy the OST file directly or move it to a PST file. This is a great way to move your email file from OST to PST. Contacts are not moved. Suppose you want to change the OST file for contacts to a PST file. This may not be helpful.


To move OST file follow the following steps:

  • Open Outlook in your system and then open the OST file that you want to move to a new PST file.
  • Now main window will appear on the screen and click on File >> Info.
  • Now, you have to select Archive in the listed block.
  • After selecting the archive pop-up box is displayed.
  • Select a folder that you want to move.
  • On the same screen you can see the archive items that are older than: Select the date there.
  • Now browse you want to save a new PST file. And click the OK button.

Method 2: Using Export Method to Change OST File to PST Outlook

This is another Outlook built-in methods to change OST file to PST Outlook. Unlike the archiving function, it is a quickest and straightforward way to move all mailbox data from the OST file to the PST file. In this case, we can not only use it to change the OST file to a PST file, but we can also change it in CSV and Excel formats.


To use this method follow the following steps:

  • First of all visit Window program and open the Outlook application in the system.
  • Go to the main menu and then click on the File
  • Click on Open and Export and then choose the Import/ Export option
  • The import and export wizard is displayed in a window. Choose Export to a File.
  • Click the Next button to continue the process.
  • Now select Outlook data file (.pst), click the Next button.
  • Select the mailbox folder where you want to save your PST file. Click Next to continue.
  • Now click on Browse to select the location to save the PST file.
  • Click on the OK button. And then Finish.

Finally, the new PST file contains the entire mailbox folders that are exported from the OST file.

Change OST file to PST Outlook using OST to PST Converter

You can perform conversion of OST to PST manually, but it has many disadvantages. It is not suitable for beginners as it requires technical knowledge to do the same thing. With the help of this Regain OST to PST Converter software, both professional as well as home users can use the tool to change OST file to PST Outlook. The software even supports the batch process. It allows moving entire OST folder with multiple OST files to PST at the same time with no file size limitation.


To learn more about how the software works, get the free demo edition of OST to PST Converter, which allows you to change the first 30 files from OST to PST for free. With FREE DEMO a user can analyze and understand the software before purchasing the license key.


Follow these Steps to change OST file to PST Outlook:


Launch "Regain OST to PST Converter" Software


Browse and select the OST file to scan that you want to change in PST format


Before the actual conversion, it will preview the scanned items of the selected OST file


Select the Save to PST option to save the OST file data after conversion

Select the "Destination Path" to save the data on the local system after the conversion


You can choose any server type to export your OST files data directly to Office 365 and Live Exchange Server by entering correct login details of respective accounts.


Click 'OK' to begin the conversion of OST mailbox items. Once the process completes it will show you a message – "Saving Process has been completed".


Steps to Open OST Mailbox Items in Outlook 2019, 2016, 2013

Open Outlook and sign in, if not already

Go to 'File' ⇒ 'Open & Export' ⇒ 'Open Outlook Data File'