Set Windows server time =

First, locate your PDC Server. Open the command prompt and type: C:\>netdom /query fsmo
Log in to your PDC Server and open the command prompt.
Stop the W32Time service: C:\>net stop w32time
Configure the external time sources, type: C:\> w32tm /config /syncfromflags:manual /manualpeerlist:”,,”
Make your PDC a reliable time source for the clients. Type: C:\>w32tm /config /reliable:yes
Start the w32time service: C:\>net start w32time
The windows time service should begin synchronizing the time. You can check the external NTP servers in the time configuration by typing: C:\>w32tm /query /configuration
Check the Event Viewer for any errors.

List server configuration info
w32tm /query /peers
w32tm /query /configuration

Force a client time update
w32tm /resync
w32tm /config /update

Set client to update time from domain
w32tm /config /syncfromflags:domhier /update

net stop w32time
net start w32time

More info