{"id":49810,"date":"2020-01-31T20:38:00","date_gmt":"2020-01-31T20:38:00","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=49810"},"modified":"2025-07-23T17:59:59","modified_gmt":"2025-07-23T17:59:59","slug":"open-ost-file-in-outlook-2019-2016-2013-2010-2007","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/open-ost-file-in-outlook-2019-2016-2013-2010-2007\/","title":{"rendered":"How to Open OST File in Outlook 2019, 2016, 2013, 2010, 2007?"},"content":{"rendered":"

The Outlook OST file is created when you set up an Exchange account, IMAP, Office 365, or Outlook.com email account in Outlook. The file binds to a particular Outlook profile and is encrypted by default with the MAPIEntryID GUID<\/strong> key. If the user profile is deleted or the mailbox has been disabled from the server, the OST file associated with the profile becomes an orphan or inaccessible. Thus, it can’t be opened, imported, or accessed directly in any other Outlook profile or account.<\/p>

However, you can import and open mailbox items from OST<\/strong> files in Outlook 2021, 2019, 2016, 2013, 2010, and 2007 after converting the offline OST file into Outlook supportable PST file format. Unlike OST, Personal Storage Table( PST) is an Outlook data file that can be opened and imported into any Outlook profile or account.<\/p>

Methods to Open OST Files in Outlook<\/h2>

If your Outlook profile is active and accessible, you can export the mailbox items from your Exchange, Office 365, Outlook.com, or IMAP email profile to PST format using Outlook Import\/Export wizard. If you have OST files that belong to deleted or disabled accounts or old email accounts that are no longer accessible, you can use a third-party OST to PST converter tool<\/a>, such as Stellar Converter for OST<\/strong>. The software converts the inaccessible or orphaned OST files into PST file format with the original folder structure and hierarchy. Further, it can export the mail items from OST directly to the existing Outlook profile, live Exchange Server, or Microsoft 365 (Office 365).

Below we have discussed methods to open OST file(s)<\/strong><\/em> in Outlook 2021, 2019, 2016, 2013, 2010, and 2007.<\/p>

Method 1: Outlook Import\/Export Wizard<\/strong><\/h3>

To use this method, you must have Microsoft Outlook with an active IMAP, Exchange, Office 365, or Outlook.com profile.<\/p>

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Note<\/em><\/strong>: Outlook does not export meta-data from OST to PST, such as message rules, blocked lists, and folder properties. Also, you can only export mailbox items from your accessible Outlook account. It can’t convert an orphaned or inaccessible OST into PST.<\/em><\/p>\n<\/blockquote>

The steps to export or open OST file to PST via Outlook account are as follows:<\/p>

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  1. Open Outlook <\/strong>and go to File <\/strong>> Open & Export <\/strong>> Import\/Export<\/strong>.<\/em><\/li>\n<\/ol>
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