Tech Support > Microsoft Windows > Windows Server > Time Synchronization with External Time Source
Time Synchronization with External Time Source
Posted by rcir88 on January 15th, 2007


I’m following article 816042 in attempting to synchronize my domain server
running Windows 2003 with an external time source. Under “Configuring the
Windows Time service to use an external time source” step five, the following
instructions are given:

5. Select the poll interval. To do this, follow these steps:
a. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\W32Time\TimeProviders\NtpClient\SpecialPollInte rval
b. In the right pane, right-click SpecialPollInterval, and then click
Modify.
c. In Edit DWORD Value, type TimeInSeconds in the Value data box, and then
click OK.

Note TimeInSeconds is a placeholder for the number of seconds that you want
between each poll. A recommended value is 900 Decimal. This value configures
the Time Server to poll every 15 minutes.


This cannot be correct! It is impossible to type “TimeInSeconds” in the
Value data box. I had to leave this unchanged and hope for the best.

In the future, I hope MS will make this simple matter of synchronizing with
an external time source a little simpler and one that doesn’t involve
multiple changes to the registry.

Posted by rcir88 on January 15th, 2007


I'm responding to my own query. I see that you're not actually supposed to
insert the pharae "TimeInSeconds", which as the next sentence states is only
a place holder. So never mind.

Since we're on the subject, in the following steps, you're asked to insert a
value for MaxPosPhaseCorrection and MaxNegPhaseCorrection. For the poll
interval I chose 9600, and for these PhaseCorrections I choose 1800. My
choices were completely arbitrary. I also chose the NIST time server as the
external stratum 1 time source. Are there any potential problems with these
choices.

"rcir88" wrote:


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