set ntpserver to DC (domain controller)

 On the domain controller with roles primary FSMO, open cmd as administrator, then:

(ony execute in the primary dc)

w32tm /query /status

w32tm /config /manualpeerlist:"yourNTPserver1,0x8 yourNTPserver2,0x8" /syncfromflags:manual /reliable:yes /update

(example: w32tm /config /manualpeerlist:"192.168.1.1,0x8 192.168.1.2,0x8" /syncfromflags:manual /reliable:yes /update )

w32tm /resync /rediscover

net stop w32time && net start w32time

w32tm /resync /rediscover

w32tm /query /status