Kernel for Notes Calendar to Outlook is compatible with most of the versions of Lotus Notes, Lotus Domino Server, MS Outlook and MS Excel such as Lotus Notes 8.0/ 7.0/ 6.5; Lotus Domino Server 8.0/ 7.0/ 6.5; MS Outlook 97/ 98/ 2000/ 2003/ 2007/ 2010; MS Excel 97/ 98/ 2000/ 2003/ 2007/ 2010 versions.