If an authoritative time server has not been configured for a Windows domain then each of the individual servers (and workstations) in that domain will attempt to set their time from Microsoft–which isn’t always a reliable source. As a result, machines could all have different times set on them, and be out of sync–which is a whole other set of issues.
When we configure an authoritative time server, we want to configure the domain controller acting as the PDC emulator to access a reliable external time service. I use the time servers from http://www.pool.ntp.org/en/. After the PDC emulator has been configured, then all other internal servers should get their time from that server.
Utilize these two references to configure time synching for a Windows domain…
- How to configure an authoritative time server in Windows Server
- Configure a client computer for automatic domain time synchronization