How to convert an OST to a PST for free?
To manually convert an OST file to a PST file, first, open Microsoft Outlook and go to "File" > "Open & Export" > "Import/Export." Select "Export to a file," choose "Outlook Data File (.pst)," and then select your OST file to export.
Alternatively, you can use Sysinfo OST to PST Converter which is the finest and most efficient utility for converting an OST file into an Outlook PST file with 100% accuracy and no data loss is a versatile software that not only converts OST to PST but also supports other formats such as MBOX, PDF, JSON, and more. This multi-functional tool ensures accurate conversion and preservation of data. https://www.sysinfotools.com/ost-to-pst-converter.php
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Callum
commented
You can complete this task manually, but it comes with some limitations, like taking a lot of time and increasing the risks of data loss. In this case, I recommend an effective solution like Softaken OST to PST Converter software. This professional application is designed to convert OST files to PST formats with just a few simple steps. It offers 100% accuracy; there is no worry about losing any data structure and formatting. The software supports both bulk and single files, so users can easily convert multiple OST files into PST format without losing valuable time. This application has a user-friendly interface that makes the whole conversion process easy for you. Moreover, it is fully compatible with all versions of Windows OS. Read more: https://www.softakensoftware.com/ost-to-pst-converter.html