How to Open OST File Without Outlook

How to Open OST File Without Outlook? Best Trick

Last updated: August 16th, 2021 at 11:07 am

Facing corruption errors while opening OST files in Outlook? Have any orphaned OST files and are unable to access their data with Outlook? Want to Import data from OST files in Outlook but unable to open it? If one of these scenarios is yours, then we want to tell you that you are at your destination. Here we are going to give you an instant solution that users can try to Read/Open OST files without Outlook.

When a user configures his account in the Outlook application. MS Outlook creates a data file like OST and PST. These file types are best in saving user mailbox data locally. Outlook mostly creates the OST files if a user configures his Exchange Server, IMAP, or Office 365 account in it. Outlook uses these OST files to saves all user mailbox items including- emails, contacts, calendars, and other folder items.

Why do Users need to Open OST files Without Outlook?

OST files work only in MS Outlook with an Exchange environment. In case due to any reason if Outlook is unable to connect with the server this OST file stops working. After getting this case the OST file becomes orphaned or inaccessible. Also, users are unable to open OST files in Outlook. A solution that users can try to open OST file data with or without Outlook is to convert the OST file into a working PST file. But converting OST to PST manually is possible when OST file is in a healthy state. But some third-party tools like OST viewer and OST Converter can help users to open OST files without Outlook.

Best Solution to Open OST file Without Outlook

In a case where the user has some corrupt or orphaned OST files, OST Converter software can help. Passfixer OST to PST Converter Software is the best trick that users can use to read or open OST files without using Outlook email application. This utility makes it simple to open corrupt/orphan OST files and all of their contents. Furthermore, the software allows you to easily explore emails, contacts, calendars, and other items linked with the OST file without any problem.

How to Open OST File Without Outlook Using OST Converter?

  1. On your computer, download, install, and run the PassFixer OST to PST Converter Software.
Main screen OST Converter
  • Now, click on the MS Outlook OST file radio button then choose any one from the options “Add Single OST file” or “Add Multiple OST files (Batch)” to import OST file for viewing its inner data.
scan/load OST file
  • Select OST files and hit the Next button to load all OST mailbox folders and sub folders.
  • Now user will all of the data items from OST files into the software’s interface. Also user can see emails and other components of OST file individuallt to simply select the required items.
preview OST emails
  • After opening OST file and viewing its data with this software, the user can also Export OST file items to new PST and various other file formats.
OST Conversion options
  • Choose the required folders and Click on Convert button, then you you will see a new window with multiple conversion options. Choose the file type to convert OST or Save OST file database.
Convert OST to PST
  • Choose Destination path to save resulted files and start conversion process by hitting the Convert button.


When a user is required to access an orphan Outlook OST file, the operation becomes extremely difficult for him or her. As a result, in the preceding part of this article, we have presented a reliable and intelligent method for opening OST files without Outlook. The user may open and view an OST file without having to utilize any email client. The software is built with advanced data protection and security algorithms, ensuring that there is no risk of data loss or security breach while using it. Also, a free trial version is available of this OST Converter Software that users can use to view corrupt OST files for free.

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