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Windows time server on PDC

I have a small domain where one PDC emulator and 1 DC.

When I run 'w32tm /monitor', it shows times of DCs, but the PDC shows 'RefID: 'LOCL' [76.79.xx.xx]'
and the other DC shows RefID: PDC_Server_Name.

So, I assume the PDC is syncing to Local bios time.

My questions are;

1. How to check if any machine is syncing to what time source? The domain controllers shows the time source as 'RefID', but rest of PCs in the domain doesn't show any, so do I just assume, any PC is syncing to PDC or is there any way to find what source is being used?

2. If all clients and DCs are syncing to PDC, then I just change PDC's time source to time.windows.com by running 'w32tm /config /manualpeerlist: peers /syncfromflags:manual /reliable:yes /update'?

DCs are Windows Server 2003, clients are windows xp
3 Solutions
Darius GhassemCommented:
Adam BrownSr Solutions ArchitectCommented:
The PDC result you're seeing is actually telling you that the PDC is configured with a locally configured time source. That source is the 76.79 IP address that it shows. Basically, the way it works is the PDC syncs with an authoritative external time source and all the other DCs sync from the PDC.
You need to configure authorative time server refer below KB article.

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