OST to PST Converter pro is an outstanding software tool to convert OST file into multiple like PST, EML and MSG file. It executes Windows OS like Win8 x32, Win8 x64, Win7 x32, Win7 x64, Window XP, Windows vista and below version and also supports all Outlook versions like 2013, 2010, 2007 and lower version, without passing any error message.