Convert Microsoft 2013 OST to PST 2013 and view your emails with the help free OST to PST Converter. The latest version 4.2 of Outlook OST Converter ensures that that every bit of data from the damaged or orphan OST files is retrieved. Convert Microsoft 2013 OST to PST 2013 that supports all the versions of Windows OS. This Microsoft OST Converter 4.2 supports the OST files (ANSI & Unicode) created on any version of Outlook email client.