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How to Recover an Orphaned OST File to Exchange Server

A complete guide to repairing and recovering orphaned OST files for smooth Exchange Server synchronization.

Updated
5 min read
How to Recover an Orphaned OST File to Exchange Server

MS Exchange Server is a professional email application that is designed to meet both personal and business needs. Many companies that rely on MS Outlook often need to export Outlook data to Live Exchange for various reasons.

An OST file is an automatically generated file that operates even while working offline, while retaining the same data that exists on the Exchange Server. It synchronizes with the Exchange mailbox after connecting to the server. Sometimes it was disconnected from the Exchange Server for many reasons, in that the OST file became orphaned. Orphaned files increase the risk of data loss if you don't recover an orphaned OST file. In this article, we discuss some common reasons for orphaned OST files and ways to recover the OST files, whether it was damaged, orphaned, or corrupted.

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Common Reasons for orphaned OST files

Before learning how to recover an orphaned OST file to Exchange Server, it’s essential to understand the main causes that make an OST file orphaned:

  • Sudden server outages or hardware issues may break the link between the OST and Exchange Server.

  • If the Outlook or Exchange profile is removed or recreated, the old OST becomes invalid.

  • Moving mailboxes from one Exchange Server to another can leave OST files disconnected.

  • If an account is deleted from Active Directory, its OST file loses connection.

  • The OST file can also become corrupted and orphaned due to an Exchange server failure or crash.

These are some of the explanations of how OST files can become orphaned.

Approaches to Recover OST file to Exchange Server

Users can recover an OST file by 2 approaches: manually or with a professional.

Approach 1: Manual approach to recover the OST file

Microsoft Outlook offers an option to recover the OST file by using ScanPST.exe. This method can recover the OST file, but it may not be effective for files that are severely damaged or orphaned. Only those users can use this software who have technical skills or experience; novice users can't use this method properly. The manual method also increases the risk of file corruption or data loss.

Steps to recover the OST file

  • The ScanPST.exe file comes built-in with Microsoft Outlook.

  • Its location depends on your Outlook version, firstly, find it.

  • Double-click on ScanPST.exe to open it.

  • Select the OST file you want to recover and click Open.

  • Click Start to begin the scan (Depending on file size, this process might take time)

  • Click Repair to start the recovery process.

  • Once the repair process completes, click OK to close the tool.

  • Open Outlook again to check if the repaired OST file is accessible.

It works perfectly, but for a few files, when users have hundreds or thousands of OST files, this becomes a time-consuming task. It does not work without Exchange Server or MS Outlook.

Limitations of the manual Method

This tool can recover an OST file, but it comes with many limitations, like you can only save the OST folder from one file at a time, and this process doesn’t work if Outlook isn’t installed on the computer. That's why users often go to a professional tool for recovering an OST file, not only because of these limitations. It also has multiple limitations, such as: It increases the chances of data loss and file corruption. Work only for minor damaged or orphaned files, not for highly orphaned files, or for other reasons.

Approach 2: Professional Tool for Recovering OST File

When the manual process fails, the most reliable way to recover data is by using a professional OST recovery tool, like the FixVare OST Converter tool. This professional tool allows you to recover bulk or highly damaged OST files. The software gives a preview option that allows the user to review the OST file before the recovery process. A selective option helps you to recover needed data instead of complete OST files.

Steps to recover the OST File

It has simple steps to recover the OST file, even for novice/non-technical users. You just follow these steps to recover the file:

  1. Download the mentioned tool on your computer/PC

  2. Add the OST files you want to recover.

  3. Choose a desired folder to save the OST file.

  4. Use filters if you want to recover only the needed files.

  5. Click the Export/Convert option to recover the file and wait for a while until the process finishes.

Key features of FixVare OST Converter

It's not just the best and most reliable software because of its simple steps, but it also offers features that make it easier to use. It's not only user-friendly but also saves time and effort by recovering OST files quickly and without any inconvenience. It also has multiple features like: Compatible with all versions of Windows and MS Outlook for the recovery process No installation needed for Exchange Server and MS Outlook Convert or save recovered OST file data into multiple formats such as PST & EML. Ensures 100% safety with no data loss or corruption. Not require technical skill to operate it.

Conclusion

When Outlook loses connection to the Exchange Server, users often panic about losing their important data. However, knowing how to recover an orphaned OST file to Exchange Server can save valuable time and effort. While manual methods work for minor issues, they fail in severe scenarios like Exchange crashes or profile deletions.

In such cases, professional software like FixVare OST Converter offers a reliable and secure way to restore and repair mailbox data. By recovering the orphaned OST file to another format and re-importing it into Outlook, you can regain complete access to your mailbox—without losing a single email.