Fix OST File - Version 5.5 Exchange OST file corruption is common issues which everyday users faced. Due to OST corruption users can't able to access OST information and unable to synchronized data with Exchange server. In this case OST fix utility gives right solution to fix OST file and convert into PST, EML & MSG file formats. This advance tool supports the entire Outlook & Exchange server editions, plus allows to fix OST file Outlook 2003, 2007 & Outlook 2010. We also recommend to use free demo before investing on it. Demo edition is restricted and only to show the preview of corrupt OST items. To fix OST file completely you need to buy full edition by investing small cost of $99 only.