There are several common scenarios where converting an OST file to a PST file becomes necessary:

The OST file has become inaccessible due to an unexpected power failure.

The Exchange Server has crashed, making the OST file unusable.

The OST file is orphaned due to changes in the Outlook profile.

The user wants to access another OST file on the same Outlook installation.

Unfortunately, Microsoft Outlook does not provide a built-in way to directly import OST files. Therefore, using a reliable third-party tool is essential for converting OST to PST format.

Recommended Solution: GoldyTools OST to PST Converter

I highly recommend using GoldyTools Best OST to PST Converter Software, which offers a simple and effective way to recover and convert your OST files.

Key Features:

Fast and Accurate Conversion – Quickly converts OST files to PST format with all mailbox items intact.

Multiple Export Options – Export OST data not only to PST, but also to EML and MSG formats.

Broad Compatibility – Supports all versions of Microsoft Outlook (both 32-bit and 64-bit).

Windows Support – Fully compatible with all versions of the Windows operating system.

You can try the free demo version to preview the first 20 items from each mailbox folder before purchasing the full version.