Time service on domain client

[Guest Fahad]

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]

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]

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?