if you find any freeware ost to pst converter software to convert all ost file data try ost to pst freeware converter software to convert all ost mailbox items in to office 365 account this freeware converter ost to pst software convert all unmounted and corrupted ost file data in to pst file this software is support all version 32bit and 64bit ost file this software is convert all ost file data using some simple steps. For more info visit this link Direct Convert OST to Office 365 Data | OST to Office 365 Converter Tool