PDC Emulator change and Windows Time Service

Eric Hammond
Eric Hammond used Ask the Experts™
on
The CPA firm that I work for is splitting, half is joining another firm and the other half will continue on with business as normal.  Server hardware will be split, the half that's leaving will be taking the DC (Server1) that held the FSMO roles.  I have already moved all FSMO roles to a DC (Server2) that's staying.  My question is what are the steps to reconfigure the network time service from Server1 to Server2?

Server1 & Server2 are both Server 2012 R2

Thanks in Advance

Server1

HKLM\SYSTEM\CurrentControlSet\Service\W32Time\Config

"MaxAllowedPhaseOffset"=dword:0000012c
"FrequencyCorrectRate"=dword:00000004
"SpikeWatchPeriod"=dword:00000384
"LocalClockDispersion"=dword:0000000a
"HoldPeriod"=dword:00000005
"PhaseCorrectRate"=dword:00000007
"MaxPollInterval"=dword:0000000a
"MaxPosPhaseCorrection"=dword:0002a300
"PollAdjustFactor"=dword:00000005
"AnnounceFlags"=dword:00000005
"TimeJumpAuditOffset"=dword:00007080
"MinPollInterval"=dword:00000006
"EventLogFlags"=dword:00000002
"MaxNegPhaseCorrection"=dword:0002a300
"LargePhaseOffset"=dword:02faf080
"UpdateInterval"=dword:00000064

HKLM\SYSTEM\CurrentControlSet\Service\W32Time\Paramaters

"ServiceDllUnloadOnStop"=dword:00000001
"ServiceMain"="SvchostEntry_W32Time"
"NtpServer"="”0.north-america.pool.ntp.org,1.north-america.pool.ntp.org,2.north-america.pool.ntp.org,3.north-america.pool.ntp.org"
"Type"="NTP"
"ServiceDll"=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,\
  00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\
  77,00,33,00,32,00,74,00,69,00,6d,00,65,00,2e,00,64,00,6c,00,6c,00,00,00

w32tm /query /status results

Leap Indicator: 0(no warning)
Stratum: 1 (primary reference - syncd by radio clock)
Precision: -6 (15.625ms per tick)
Root Delay: 0.0000000s
Root Dispersion: 10.0000000s
ReferenceId: 0x4C4F434C (source name:  "LOCL")
Last Successful Sync Time: 3/28/2017 8:52:49 AM
Source: Local CMOS Clock
Poll Interval: 6 (64s)
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Seth SimmonsSr. Systems Administrator

Commented:
you could export those registry keys on server1 then backup the same ones on server2 and restore the ones from server1 to server2 then restart windows time service
Server Administrator
Commented:
I have ran into an issue where the configured PDC emulator was still syncing as the CMOS clock. Here is an article I wrote for the solution: https://www.experts-exchange.com/articles/18450/Windows-Server-PDC-Emulator-Sync-Issue-with-Manually-Configured-NTP-Server.html

I also have a video on configuring the NTP time service on a Windows 2012 PDC emulator

https://www.experts-exchange.com/videos/511/Windows-Server-2012-Configuring-NTP-Servers-for-Time-Synchronization.html

Author

Commented:
Rodney,

After I get server2 configured should I execute the commands w32tm /unregister and w32 /register to reset  Server1  to default so it will use the domain time server hierarchy & not external servers or would  /syncfromflags:DOMHIER accomplish that?

Thanks
Rodney BarnhardtServer Administrator
Commented:
You should be able to do the following:

w32tm /config /syncfromflags:domhier /reliable:no /update

net stop w32time

net start w32time

This should correct server 1.

Author

Commented:
Solution worked exactly as described.

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