OST PST Conversion Tool Freeware - Version 3.5 OST PST Conversion Tool Freeware: Freeware solution to recover OST file from Exchange Server when OST file become inaccessible due to generate error in file. OST file injured due to following reason: Upgrading Exchange Server, database corruption, CRC error. This software successfully runs on all versions of Windows OS and effectively conversion Offline Storage files into Personal Storage files (.PST) as well as supports all MS Outlook Versions. Software also works as Microsoft outlook 2010, 2007, 2003, 2000, 98 and Microsoft exchange server like as 2010, 2007, 2003, 2000, 5.5 and 5.0 etc. you can purchase full version of our software just at $99. Get more info and download this software follows link-:http://www.convertostfile.com/