Microsoft OST Viewer tool is an independent utility that helps to view OST files or user can also view OST into Microsoft Outlook 2007, 2010, 2013, etc. A cause of corruption in MS Outlook contains various levels. Some corruption cannot repair by ms outlook it depends 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. This Viewer application easily runs all Windows OS version like 2000, 2003, XP, ME, NT, Vista, Win7 and Win 8. 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, outlook 2010, outlook 2013 user can not be able to establish connection between MS outlook and MS Exchange server and cannot read OST file then MS OST Viewer tool will solve massive problem and easily View OST Files effortlessly.