Unable to sync server to new NTP server

Question

Hello, Recently added two Windows 2016 domain controllers and made one of the them the new PDC (the intention is to demote the old 2012 servers soon). After the change, when updating DNS settings in two file servers, they are unable to sync to the NTP and time keeps changing to CMOS, also state is pending (see screenshot) Registry was configured in the PDC with type NTP, the rest uses type NT5DS. If reverting at least one of the DNS server settings to the old server then the file server synchronizes properly. Other servers in the domain don't have this issue. ![81291-image.png][1] [1]: /api/attachments/81291-image.png?platform=QnA Thank you!

Answer 1

For your PDC emulator you can configure as below.

w32tm /unregister
net stop w32time
w32tm /register
net start w32time
w32tm /config /manualpeerlist:<ntp ip address> /syncfromflags:manual /reliable:yes /update
net stop w32time
net start w32time
then check the results
w32tm /query /source
w32tm /query /configuration

--please don't forget to Accept as answer if the reply is helpful--

Answer 2

Not clear what the issue is but Some general info

• All domain members should use NT5DS domain time.
• Desktops and member servers sync with any domain controller.
• Domain controllers sync with PDC emulator (one per domain)
• PDC emulator in child domain can sync with any domain controller in parent domain.
• PDC emulator in parent domain syncs with either a hardware clock or possibly an external source.
  https://blogs.technet.microsoft.com/nepapfe/2013/03/01/its-simple-time-configuration-in-active-directory/

--please don't forget to Accept as answer if the reply is helpful--

Answer 3

@Dave Patrick

Thank you for the general information, yes I can say that my domain matches all that, still I have not been able to resolve the issue.

Answer 4

@Dave Patrick

Thank you, with the command:
w32tm /config /manualpeerlist:<ntp ip address> /syncfromflags:manual /reliable:yes /update
I was able to force the time source in the offending server to the NTP server and it seems that it is keeping the setting, however when I run:
w32tm /configuration on that same server I get the following:

C:\Windows\system32>w32tm /monitor
GetDcList failed with error code: 0x8007054B.
Exiting with error 0x8007054B
C:\Windows\system32>

Running the same command in any other server gives me a list of all domain controllers. So there should be something else that I'm missing.

Answer 5

I'd check the Windows Time service is started, also post results of
w32tm /query /source
w32tm /query /configuration