Let’s see how to configure the NTP client synchronization on a Windows Server 2003.

For me the easyest way is using the CLI. Following are these two magic commands that do the trick.

w32tm /config /manualpeerlist:"0.pool.ntp.org" /syncfromflags:MANUAL /reliable:YES /update

And the second one:

net time setsntp:"0.pool.ntp.org"

Hope this helps.