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Intermittent time sync error on domain computers

Posted on 2013-06-25
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Last Modified: 2013-06-27
Hi,
I'm having a problem where domain members are getting errors to the effect that synchronisation between the domain time server and the client has failed and they're unable to access network drivers - if they leave the computer be for 30 mins or so the problem appears to resolve itself but not always.  Also, if it run the net time command it displays the time which matches exactly with that displayed on the problem computer - the problem is intermittent and happening to about 15 of the 30 computers on the domain.

Domain controller - Windows 2000 Server
Member Servers - Win2k3 and Win2k8

Any suggestions please?  If you require further info please let me know.
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Question by:t38
6 Comments
 
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Jim P. earned 400 total points
ID: 39276894
Create a batch job at login for all machines via GP or some script. It doesn't really matter. Yo just want to get all the non PDC's in the domain. Even the BDC's need the synch.


net time /domain:DomainName /rtsdomain:DomainName /set
net time  /querysntp/setsntp:PDCName/

Open in new window


Then afterward have a scheduled task to that runs:
NET TIME \\TIMESRV /SET /YES

Open in new window

running on a regular basis.
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Expert Comment

by:eeRoot
ID: 39276964
Make sure the clients are syncing with a domain controller.
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Author Comment

by:t38
ID: 39277266
Thanks, I'll try the batch job and will report back.
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LVL 24

Expert Comment

by:Sandeshdubey
ID: 39277563
I would recommend to first check that authorative time server pararmeter is set correctly on PDC role holder server.http://support.microsoft.com/kb/816042

If any time GPO is deployed for server and client remove the same as it is not required and can cause conflict.By default domain cleints and member server follow domain hierarcy for time sync.http://support.microsoft.com/kb/223184

If the DC is configured on virtual env then you need to disable the time sync from host to VM.Refer below link to disable the same
Virtualizing Domain Controllers and the Windows Time Service
http://msmvps.com/blogs/acefekay/archive/2011/08/23/virtualizing-domain-controllers-and-the-windows-time-service.aspx

Also if there is any third party software install on DC for time sync remove the same as this could cause conflicts.

Please also make sure that udp port 123 which as direction the chosen NTP server is not blocked.

Hope this helps
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Assisted Solution

by:frankhelk
frankhelk earned 100 total points
ID: 39279530
More basically I would recommend to disable the Windows built in time service W32time - a thing  that I had a lot of hassle with - and use the classic NTP service. See this article for more info.

The script method mentioned above is nice, but it results in hard time steps on the machines running it. Some software might react unpredictable especially on hard steps that go into the past (aka stepping back a computer whose clock is running too fast).

The NTP service acts much nicer by permanently tuning the system clock frequency to get the system clock in sync with the time master and keep it in sync.
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Author Closing Comment

by:t38
ID: 39281895
Thanks for your input - the batch fixed the problem but it's good to know re. W32time...
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