Step 1
Determine the PDC (Primary Domain Controller) Emulator in your AD domain.
On a server in your domain, open command prompt and issue the following command:
dsquery server -hasfsmo pdc
the output will be in quotation marks, and will start with a Canonical Name which will identify the PDC Emulator in your domain, such as:
"CN=INT-DC1, ...."
Go to that DC's console, and open a command prompt.
Step 2
Run the following command on the PDC emulator:
w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update
Note: the value 'time.microsoft.com' is a sample timeserver . you can use a space delimited list of your favorite time servers. check out http://www.pool.ntp.org/en/ or this suggested list.
Once done, restart W32Time service. To do this, from an elevated command prompt:
net stop "windows time"
and then:
net start "windows time"
Step3
Run the following command on *all* other domain controllers in the domain:
w32tm /config /syncfromflags:domhier /update
Once done, restart W32Time service, as shown above.
Reference: