In today's era, most of the organization use Outlook application for the communication purpose. It stores its all data items in OST and PST format. However, an OST file is the offline storage table, which comprises the replica of data items that are stored on the Exchange server. But, sometimes, OST files are unable to connect with the Exchange Server mailbox due to many reasons. That is why OST file becomes orphan and users faces the error message when they try to open the OST files. Thus, users are looking for a reliable solution to recover orphaned OST file. With the help of this article, you will get to know how to restore data from an orphaned OST file.

Outlook OST and Orphaned OST File Explored

An OST file is very useful as it allows to work in offline mode. It creates replicas of mailboxes and stored in the database of Exchange Mailbox. In some situations, where the primary mailbox is removed from the server, Exchange then OST files gets orphaned or useless.

Some Common Reasons that Make OST Files Orphaned

When Exchange Server mailbox is deleted, then, OST file becomes orphaned and inaccessible. There are many reasons that will make your OST file orphaned. Moreover, you can classify all the reasons in two categories. They are: hardware reasons & software reasons.

Software Reasons:
  • Virus or other malicious software infect or damage the MS Exchange databases.
  • Delete, disable, or deny the access of the mailbox on the Microsoft Exchange Server.
  • Human misoperations such as delete database by mistake, mis-formatting the OS, mis-partitioning the storage device, etc.
Hardware Reasons:
  • Data storage device failure.
  • Controller card malfunction or failure.
  • Abnormal shutdown server or Power failure.
Microsoft Support to Recover Database Mailbox from Orphaned OST File

Microsoft is the developer of Exchange and Outlook client-server program for Windows platform. It advises that if the original Exchange account is not deleted or modified, then users can start the Exchange application offline by using old OST file. However, It can also restore the OST data by converting the OST files to PST formats. But, in case, if the MS Exchange account has been deleted or altered, then the OST files will be lost and it becomes orphaned and completely inaccessible. 

How to Restore Data From an Orphaned OST File?

As it is known that there is no any manual method available to retrieve the data from an orphaned OST file. In such case, the third party tool comes as an effective way to restore the data from orphan OST file. Out of which, one such tool is Offline OST to PST Converter Tool that recovers all the unparented data and stores it in a healthy PST file. The software is capable to retrieve the entire data by maintaining the integrity of OST files. The tool is designed in such a way that it supports the OST files both compressible and high-level encryption. The utility provides an option to split the large size PST into smaller parts after conversion. Moreover, it is not necessary to install the Outlook application. After recovering and restoring the data from orphaned OST files, the tool generates a status report for future usage.

The Final Words

When a user needs to open and access their unparented OST files, they need to recover the inaccessible data. So, in this blog, we have discussed how to restore data from an orphaned OST file. For this purpose, you have to convert your OST files into PST format in Outlook environment. There is an automated solution discussed here, which is capable access and recover orphaned OST file without Exchange Server environment.

About Author

Diptesh Kumar Bhakat is proud to be the author of fastest growing tech blogs. He is a tech savvy. Mr. Diptesh is currently pursuing his B.Tech in Mechanical Engineering. He has a very close attachment with the tech world and loves to blog on his fav topics. He has also contributed to many regional dailies and authored guest posts on some of the leading tech blogs. You can reach him through Facebook, twitter, Google+ and linked-in.

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