Open the Date & Time control panel, and go to the Network Time tab. Make sure Network Time synchronization is OFF (click the button to stop if necessary). Select MANUALLY, and enter an IP address for a Network Time Server (NTS) into the NTP field. There's a listing of appropriate servers at:
www.boulder.nist.gov/timefreq/service/time-servers.html
I used the actual IP address (instead of the server name) and it worked perfectly.

