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Free Online OST Viewer Tool – How do I view OST File with simple ways?

Free Online OST Viewer Tool - How do I View OST File with Simple Ways?


This write-up consists of several methods to open and view OST file in Outlook or without Outlook. OST file is created in Outlook and users can view it easily but there are many cases, where a user needs to open OST file without MS Outlook. At that time, this becomes a tough task for users. No need to bother, just visit this post and get solutions to see OST file with or without Outlook. Let us start this post with an introduction to MS Outlook and OST file.


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Introduction to MS Outlook


MS Outlook is a desktop-based renowned email client among business and home users. It comprises to store all contacts, email messages, notes, calendars, tasks, etc. It is available with Microsoft Office Suite and the latest version of Outlook is Outlook 2019 which has all advanced features that were not available in previous versions of MS Outlook.


OST file of MS Outlook plays a very important role for users by providing the facility to work in offline mode when users are not connected with Exchange Server. The changes which are made by the users in offline mode are automatically synchronized with the server once the connection is being made.


The users are allowed to add, delete or modify the content of OST file. The users can compose the emails but this can be sent only when synchronized with the server.

Synchronization consists of two parameters –

  • Headers – It consists of the name of the sender, subject of the email, time and size of messages.
  • Full items – The full items contain a header, message body, pictures, and attachments.

How to view/read OST file in MS Outlook?


OST files can be synchronized with the data present on the server with Microsoft Exchange. The users can make OST in the system without taking a backup of the previous file.


The list below is some of the locations to view the Outlook OST file.


Windows 7 and Windows Vista – Drive: \Users\user\AppData\Local\Microsoft\Outlook.


Windows XP – Drive:\Documents and Settings\\Local Settings\Application Data\Microsoft\Outlook

Methods to read OST file in MS Outlook

Method 1. To locate OST file in Outlook

Here are the steps to locate OST file in Outlook –

  • Open Outlook and go to File menu.
open outlook and go to file menu
  • Go to Account Settings and then choose Account Settings.
choose account settings
  • This will open the Account Settings window. Go to the Data Files tab and click on Open File Location.
open file location
  • This will open the location of OST file to your system.

Method 2. Transfer Outlook data to new PST file

To do this, below are the steps –

  • Launch MS Outlook
  • Make a new PST file in MS Outlook profile
  • Drag and drop the entire mailbox folder into new PST file

How to view OST file in absence of Outlook?


To read OST file without Outlook is not possible with any of the manual solutions. Therefore, users need a professional solution named Free OST Viewer Tool. This will help users to completely view OST file with all its components. The user can choose any folder and open OST file without any problem.

How does free OST Reader Tool work?

  • Launch the software successfully on your system.
  • Go to the Browse button which takes you to your system and by this, you can upload OST file here whom you would like to view.

Upload OST file
  • This will open the OST file. Users can pick any folder from the Preview pane and view the contents of that folder.

open the ost file

Is there any way to save OST file data?


Yes, you can save OST file data with the above-stated tool which not only provide viewing OST file but also allow users to save it into several formats like PST, EML, EMLX, MSG, MBOX, and VCF. By this, users can view OST file into several other clients.

Final Words

In this article, we have discussed solutions to read the content of OST file in both cases i.e. in presence and absence of Outlook. Users can choose the desired solutions as per their requirements and read the complete OST file with attachments.