There are several situations where converting an OST file to a PST file becomes necessary, such as:

The OST file becomes inaccessible due to a sudden power outage

Exchange Server crashes, making the OST file unreadable

The OST file becomes orphaned due to changes in the Outlook profile

You need to open an OST file from another system or user profile in Outlook

Unfortunately, Microsoft Outlook does not provide a built-in option to directly import or open an OST file. To access the data, you need to use a reliable third-party tool to convert OST to PST.

Recommended Solution: GoldyTools OST to PST Converter

I highly recommend GoldyTools Best OST to PST Converter—a powerful and user-friendly software designed to make OST to PST conversion easy, fast, and accurate.

Key Features:

⚡ Fast and Secure Conversion – Quickly converts OST files to PST format without data loss

🔄 Multiple Export Formats – Convert OST to PST, EML, and MSG file formats

💼 Full Outlook Compatibility – Supports all versions of Microsoft Outlook, both 32-bit and 64-bit

💻 Windows OS Support – Fully compatible with all Windows versions, including the latest builds

👁️ Free Preview Option – The demo version lets you preview the first 25 items per mailbox folder before purchasing

GoldyTools OST to PST Converter is a safe, standalone utility—it does not require Microsoft Outlook or Exchange Server to perform the conversion.

If you’re facing OST file access issues or planning to migrate your mailbox data, this tool is a reliable and efficient solution. Try the free version today to evaluate its features before committing to a license.
https://www.goldytools.com/blog/ost-file-corruption-reason-and-solution/