When I start iCloud control panel, then check the top box for calendars, etc. iCloud runs through its routine, showing calendar items being downloaded, etc. But then I get this error; Your setup couldn't be started because of an unexpected error. Error: 0x80040604: Up/POST:Conflicts Error: 0x80040604: Up/HdlPOSTr[p17-caldav.icloud.com/412/0#1/52] I have uninstalled iCloud Uninstalled Outlook Repaired the .pst I found a post in the Apple forum saying something like, This error is being investigated by Apple and the post will be updated when an answer is available." That was 3 years ago, no answer. I had iCloud syncing just fine for 6 months, then it quit. Any ideas? Thanks for your help!