I have been searching all sorts of forums in an attempt to find the correct CDO hotfix for the version I have on both the BES 4.0 and Exchange Server 2000 systems I am using. The version is 6.0.6249.0. It has been registered on the BES in both the system32 and exchange\bin folders. The question I have is where can I find the appropriate hotfix to eliminate the duplicate calendar events that keep occuring?