The OST to PST Converter by Corbett Software is undoubtedly the best solution for this situation. Designed with advanced algorithms, this tool caters to the multiple needs of users thoroughly. Not only does it support bulk conversion of OST files but also allows selective conversion of users' data. With an incredibly easy-to-navigate GUI, this software can be effortlessly used by all users, whether professional or novice. Moreover, this tool is fully supported by all versions of the Windows OS, thus, you can use it on any Windows machine without any restrictions. Simply put, this is a well-designed tool to convert even highly corrupted, damaged, password-protected, or orphaned OST files, and that too, without any difficulties.
For more information, check out: https://corbettsoftware.com/convert/ost/pst.html