Run command as Administrator. On the DC you want to keep time:
net stop w32time w32tm /unregister w32tm /register net start w32time w32tm /config /manualpeerlist:0.us.pool.ntp.org,1.us.pool.ntp.org,2.us.pool.ntp.org,3.us.pool.ntp.org /syncfromflags:manual /reliable:yes /update
On your other DCs:
w32tm /config /manualpeerlist:FQDNofTimeKeeper /syncfromflags:manual /reliable:no /update
Reading:
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