Microsoft OST Viewer Tool - Version 3.6 Microsoft OST Viewer tool is independent utility that helps to view OST files or user can also view OST into Microsoft Outlook 2007, 2010 etc. A cause of corruption in MS Outlook contains various levels. Some corruption cannot repair by ms outlook it depend on level then our software MS OST Files Viewer software eliminate error from corrupt OST File and user save every messages, contacts, tasks, emails, notes, calendar, journals and other important attachments.Microsoft Outlook 2007 OST Viewer software runs on most of Microsoft Exchange server such as MS Exchange server 2010(64bit), 2007, 2003, 2000, 5.5 and 5.0. When user not open password protected OST file then using this perfect MS OST Viewer Tool user can easily open password protected file. MS OST Files Viewer application easily runs all Windows OS version like 2000, 2003, XP, ME, NT, Vista and Win 7. Microsoft OST Viewer freeware software restores original file format of email like as Text, HTML, and RTF. If user have some problem with special version i.e. outlook 2007,