How to Open OST File in Outlook – With or Without MS Outlook

Summary: This blog will highlight the most common query of the Tech community to open OST file in Outlook with or without Outlook installation. So, let’s dive into it. When it comes to email management, OST (Offline Storage Table) files are essential since they let users access their Outlook mailbox data offline. But there can be times when you need to use Outlook to view the contents of an OST file. In this blog post, we’ll highlight the problems you might face while opening an OST file and look at professional OST to PST Converter and manual ways to Convert OST to PST files with Outlook.

An overview of OST files:

Working with emails, calendars, contacts, and other Outlook items without an internet connection is possible with an OST file, which is an offline copies of your Exchange mailbox data. When connectivity to the Exchange Server is restored, OST files instantly synchronize. In situations where internet connectivity is irregular they play a critical role in ensuring constant access to vital data.

Why do we need to Open OST File?

The following situations may require opening an OST file in Outlook:

Offline Access: The main use of OST files is to access mailbox data when there isn’t an active internet connection. Users can easily view their emails and other mailbox items offline by opening them in Outlook.

Transferring or Changing Email Clients: Converting and reading OST files in Outlook can guarantee that historical mailbox data is still accessible even when email clients change or systems are migrated.

Gaining Access to Archive Data: OST files may contain archived or older data that users want to review or retrieve, even if it was not synchronized with the server recently.

How can you find an OST file on your PC?

The default locations of OST files in various Outlook versions are as follows:

For Outlook 2019 and 2016:

The default location of OST file in Outlook 2019 and 2016 is:


For Outlook 2013:

The default location of OST file in Outlook 2013 is:


For Outlook 2010:

The default location of OST file in Outlook 2010 is:


For Outlook 2007:

The default location of OST file in Outlook 2007 is:

C:\Users<username>\Local Settings\Application Data\Microsoft\Outlook

Please take note that the location of the OST file itself may differ based on your system configuration and Outlook settings. If it’s not in the default location, you can use Outlook to find the OST file by doing the following:

  • Open MS Outlook and click on the File tab.
  • Click “Account Settings,” then from the drop-down menu, choose “Account Settings” once more.
  • Navigate to the “Data Files” tab in the “Account Settings” window.
  • By selecting the desired OST file and clicking the “Open File Location” button, you can open the folder containing the chosen OST file.

How to Open OST File in Outlook Application?

While there are manual ways to open OST files in Outlook, they could differ based on the user’s requirements and the version of Outlook. The general procedures are as follows:

Using Import/Export Method:

  • Open MS Outlook and select “File” from the menu.
  • Click on “Open & Export” and then select “Import/Export.”
  • Tap “Import from another program or file” and choose it, then hit “Next.”
  • Click “Next” after selecting “Outlook Data File (.pst).”
  • Locate the OST file, click on it, and pick the necessary settings.
  • Press “Finish” to bring the process to an end.

Creating a New Outlook Profile:

  • Click “Control Panel” and select “Mail.”
  • To add a new Outlook profile, click “Add” after selecting “Show Profiles”.
  • To set up the profile, enter a name and adhere to the instructions.
  • The OST file will be available when you launch Outlook using the newly established profile.

Professional Method to View and Open OST File

Although manual techniques are feasible, they might not be appropriate in all circumstances, particularly when handling complicated problems like corrupted OST files or big files. Expert OST to PST conversion solutions provide a more dependable and effective option. TrijaTech OST to PST Converter is among them.

With the help of this reliable and result-oriented software, inaccessible OST files can be easily opened in Outlook by converting them into PST format.

In a Nutshell

In many cases, Outlook must open an OST file in order to perform tasks like offline access, data recovery, or email client switching. Although there are manual techniques, they might not be appropriate in all circumstances, particularly when handling complex issues like corruption. Expert products such as TrijaTech Converter for OST offer a dependable and effective solution, guaranteeing smooth access to Outlook mailbox data. To ensure that you always have access to your important email data, take into account the particular circumstances of your case and select the approach that best meets your needs.

Deckon Rock

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