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Problem: Synchronizing Time on 2k3 PDC with External Source

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26 replies to this topic

#26
pstraight

pstraight
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  • Joined 07-April 11
  • OS:2003 x86
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I've been having this same issue and hope it is related to the GPO settings like everyone else is saying. I am administering a Windows 2003 32bit SP2 machine. I only got hired a week ago and aparently the clocks here have always been about 12 minutes ahead of the real time.

Anyway, the network administrators before me set the default domain policy to configure the "Configure the Windows NTP Client" and the "Enable WIndows NTP client" to be enabled. Obviously since our domain controllers were in the domain that this policy was being issued to, they are getting these settings as well. I went ahead and made an OU and put the domain controllers in there and enforced the "Default domain controllers policy" GPO so that should override any settings the default domain policy issues. Of course, the default domain controllers policy has all three of the time settings discussed here set as "not configured". I went ahead and did a gpupdate /force on the domain controller with the PDC fsmo role and then logged off and logged back on. The problem was that I was getting the same error. Is this something that I will have to restart the domain controller for all the settings of the enforced "default domain controllers policy" to take effect? I really don't want to restart this domain controller seeing as it is running DHCP and DNS.

Thanks


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#27
jhill8

jhill8
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You have to be very sure you followed the instructions for using an external time source correctly. I've used these instructions on many a 2K3 server without issue, so to recap:

1. Change Windows to use the NTP protocol for time synchronization:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters
Value: Type
Data: NTP

2. Configure the AnnounceFlags value:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config
Value: AnnounceFlags
Data: 5

3. Enable the NTP server value:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient
Value: Enabled
Data: 1

4. Specify the NTP server to use:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Parameters
Value: NtpServer
Data: us.pool.ntp.org,0x1

5. Select the NTP polling interval:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient
Value: SpecialPollInterval
Data: 900

6. Configure the time correction settings:
Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config
Value: MaxPosPhaseCorrection
Radix: Decimal
Data: 3600

Key: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config
Value: MaxNegPhaseCorrection
Radix: Decimal
Data: 3600


After this, stopping and restarting the NTP service should get you working. If it does not, check the value configured in step 4 - this being misconfigured is the only time I've seen errors in the Windows Time service like the ones you've posted, so it's possible this is incorrect in your registry. I would also suggest using a time server OTHER than time.nist.gov, as it is a VERY busy time server and you are likely to miss one or two time syncs to it before you get a good one. I would suggest using another time server, preferrably a stratum-2 NTP server closer to you. You can find these listed here:
http://www.eecis.ude...tp/clock2a.html

Works great on my SBS 2003 server. Thanks!






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