Guest Fahad Posted February 2, 2008 Posted February 2, 2008 Dear; I synchronized my PDC with external H/W clock and it's successful. I noticed some client (windows XP) didn't sync successfully. How Can I force all client to sync with the PDC? also what si the update interval that the client use to sync with PDC? I'm confused when i check the registry on my client i found the following values: under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config MaxPollInterval = 15 UpdateInterval = 30000 under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProvider\NtpClient SpecialPollInterval = 3600 which one of these valuse will be used by the client to sync with the PDC?
Guest Steve Goddard Posted February 2, 2008 Posted February 2, 2008 RE: Time service on domain client In brief answer run w32time /resync to forced your client to resynchronize its clock. You could use the same command to run on all machines by a script remotely executed by psexec, or launch the same script on login by group policy or switch off the power to the site so everyone was forced to boot up again (kidding). Windows time service is a complicated one to understand, I believe if it syncs without errors four times in a specified time period it switches to a longer random time period. So after a period of time your clients will resync anyway and you will not have to force the command. Finally, if you still want to know what the reg keys are then look at this http://technet2.microsoft.com/WindowsServer/en/library/71e76587-28f4-4272-a3d7-7f44ca50c0181033.mspx?mfr=true You'll also find a wealth of information on how it works. -- Steve G. MCSA 2003 +M "Fahad" wrote: > Dear; > > I synchronized my PDC with external H/W clock and it's successful. I noticed > some client (windows XP) didn't sync successfully. > How Can I force all client to sync with the PDC? > also what si the update interval that the client use to sync with PDC? I'm > confused when i check the registry on my client i found the following values: > under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config > MaxPollInterval = 15 > UpdateInterval = 30000 > under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProvider\NtpClient > SpecialPollInterval = 3600 > > which one of these valuse will be used by the client to sync with the PDC?
Guest Steve Goddard Posted February 2, 2008 Posted February 2, 2008 RE: Time service on domain client In brief run w32tm /resync to force the client to resychronize its clock. You could then drop the same command into a batch file and remote execute it using psexec or use it in a group policy login script. I wouldn't bother as clients will eventually update their time on their next polling period. As for the reg keys and a lot of detail on how the service works you can find out it all here; http://technet2.microsoft.com/WindowsServer/en/library/71e76587-28f4-4272-a3d7-7f44ca50c0181033.mspx?mfr=true Basically as I understand the service, it checks for updates several times in a short period and if there aren't any errors it extends and randomizes the period it checks for resync;s. -- Steve G. MCSA 2003 +M "Fahad" wrote: > Dear; > > I synchronized my PDC with external H/W clock and it's successful. I noticed > some client (windows XP) didn't sync successfully. > How Can I force all client to sync with the PDC? > also what si the update interval that the client use to sync with PDC? I'm > confused when i check the registry on my client i found the following values: > under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config > MaxPollInterval = 15 > UpdateInterval = 30000 > under HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProvider\NtpClient > SpecialPollInterval = 3600 > > which one of these valuse will be used by the client to sync with the PDC?
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