I want to download old version of MAPI, but i can't find it any more, does anyone know where can i download? Thanks! Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1 Version:6.5.8153.0 Here always shows the latest one: http://www.microsoft.com/downloads/en/details.aspx?familyid=E17E7F31-079A-43A9-BFF2-0A110307611E

Anyone knows

Hi The old version of Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1 isn’t supported from official web site. Maybe you can get it from 3rd party website or msdn forum.