How to Open an Orphan OST File in Outlook 2016?

OST is an offline storage table file that is used to store copies of an email from an exchange server. This is useful when you are not connected to the internet because you can still work in cache mode. Once you get an internet connection OST file gets synchronized with the mail server and becomes readable. Suppose for any reason if your OST file gets inaccessible and you are not able to access your Outlook account, you need to convert it, you cannot export items from the OST to PST via Outlook Import/Export wizard or you have accidentally deleted some important emails from your account.


However, you have an old OST file from which you can recover the emails. You have to convert OST files to PST format. Also when you have a large-sized OST file you may face a synchronization issue. Because it is difficult to download it from the server; to overcome this situation you can go for an OST to PST conversion method. For this, there could be two possible approaches, one is manual method and another is using third party application.

Manual way to open OST file in Microsoft Outlook 2016:-

First of all, you need to know that the newer version of MS Outlook such as MS Outlook 2016 does not support manual methods to import the OST file. But you can re-create an OST file using manual steps after that you can access their content in Outlook 2016.

Steps by step process of Re-creating OST File in MS Outlook:-

1.       First of all, Exit your MS Outlook.

2.       Go to the Control Panel and double-click on it.

3.       Select the Exchange Account on the E-mail Tab

4.       Now click on the Change option.

5.       Use the Cached Exchange Mode checkbox then clear it.

6.       Now, Click on More Settings.

7.       Then click on the Advanced Tab click on Offline Folder File Settings.

8.       Click on the Disable Offline, and then the dialog box appears, click on Yes.

9.       Again, click on the setting of the Offline Folder File.

10.     Click on the OK.

11.     Click yes on the dialog box that appears.

12.     Now, Use the Cached Exchange Mode checkbox under the Cached Exchange Mode Settings.

13.     Click on the OK.

14.     Then click Finish.

15.     Also a close button on both Account Setting and Mail Setup.

 Converting OST file to PST to open it in MS Outlook 2016-

The manual method only works when you have the access to the machine on which the OST file has been created for the first time. But, if you have OST file backup or some old orphan OST file which you need to open in your MS Outlook 2016 profile then in order to save OST files in PST file format; OST to PST converter is what you need.

Here you can use Magus OST to PST conversion tool. It is an advanced OST to PST converter that can convert all OST mailbox items, such as emails, contacts, tasks, etc. to a PST file. It can convert large-sized and encrypted OST files. Further, it saves the OST data in various other file formats, such as PDF, MSG, and EML.

Following are some features of Magus OST to PST conversion wizard:

1.       It converts complete data present with an OST file including emails, contacts, calendars, tasks, notes, journals, and additional folders.

2. It offers instant previewing of your data within your folder. Be it emails, contacts, calendar, tasks, notes, journals, etc.

3. It allows you to convert large OST files in less time.

4. It provides the preview of converted PST files so that you can check whether all the items are there or not.

5. You got an option to download attachments according to your need.

6. It has both options to open and convert files independently, you want only a preview of your OST or PST file you can use the "open file button".

7. Keeps the folder structure of OST file intact.

For more details and in-depth knowledge about the software you can check how the OST to PST file conversion is done. Once you create the PST file; you have all the options in the world to view the PST file in MS Outlook. You can now open, read, access the content of your OST file which was earlier inaccessible.