There are dozens and dozens of posts for this all over the Internet and no one seems to have a solution that genuinely works. I'm running Windows Vista Ultimate SP1 with Windows Mobile Device Center v6 or v6.1 and I have a Samsung SCH-i760 running Windows Mobile v6.1. When I connect my device and attempt to sync it fails and an event is posted in the application log that says, "Windows Mobile-based device failed to connect due to communication (0x80072745) failure (see data for failure code)." I've tried everything: uninstalling/reinstalling WMDC, uninstalling/disabling firewalls, hard resets of my device, deletion/recreation of partnerships and nothing works. The only way I can get my device to sync is to delete its partnership and create a new partnership, afterwhich it syncs once and then goes back to failing again. Someone out there must have a true solution to this problem. Please help.