User need an expert tool. In case of OST file corruption or orphan. To complete the recovery of OST data, try Recover Data for OST to PST conversion software. The Exchange OST recovery software works proficiently on OST files & converts OST to PST in just couple of clicks. The Exchange OST recovery tool is set for multiple or unlimited OST files. As this Exchange OST recovery free tool normally designs for data conversion but it works as Exchange data recovery tool when it retrieves deleted emails from OST file after conversion. The Exchange OST to PST conversion tool supports all versions of Outlook 2010 to 95 thus, it restore data from OST file even if it contained data in ANSI or UNICODE format. The Exchange OST to PST converter tool easily performs recovery of Exchange OST file even if the size of OST file comes across to 49GB. OST to PST recovery tool is set for recovery of Exchange Server OST data with its exact formatting or style & do not put any effect on original OST file. OST recovery tool handles all OST files which turn in encrypted form & recover OST file data without any technical requirement needed. Thus, try this Exchange OST recovery software in freeware version on your machine for testing. The software OST recovery works exactly as full one & it helps people to repair OST file & convert OST to PST task. For more info over offline storage recovery software: http://www.recoverdatatools.com/exchange-ost-recovery.html