Hi, I am new to these forums so if there is a thread with the solution please forward it to me. I got my HTC Desire last week and Sync'd it with our Kerio Mail Server 6.7.0 patch 1. Had to add the line to allow unsupported devices as it was giving some connection issues and then worked fine after that. The problem has been with the sync'ing of the contacts. It sync's fine for about the first few sync's and then it gives an error on the phone "failed to connect to the server" But it sync's mail and the calendar perfectly. The issue is that the sync'ing of the contacts is second on the list of 3 items to sync as per the phone. So it sync's mail first - fine, contacts second - error and then calendar - fine. I removed my contacts from my mail on the server and it still didn't update on the phone. So wasn't communicating with the server as per the error. If I delete my contacts on the phone, it then connects fine to the server and I get my contacts back. Works fine for about a few sync's and then without adding or deleting any contacts I get the error message back. Not sure what to do next from a Trouble Shooting point of view. Any ideas would help. Thanks in Advance.