Open the power-shell with Administrator rights and set the NTP-Server (i.e. to 10.xxx.12.61):

w32tm /config /manualpeerlist:"10.xxx.12.61" /syncfromflags:manual /reliable:yes /update
net stop w32time && net start w32time
w32tm /resync
w32tm /query /status
 
On the clients in the domain set the NTP to the domain-controller (i.e. "vdc" if that is the name of the DC):
w32tm /config /syncfromflags:manual /manualpeerlist:"vdc,0x1" /update
 
After that the NTP-Time should be set