[ntp:questions] Time sync on a windows domain

Ryan Malayter malayter at gmail.com
Sun May 27 05:02:39 UTC 2007

On Windows 2003 with SP1 (or SP2, it has recently been released),
Windows Time Service works reasonably well. However, the resoluton of
Windows 2003 and older is limited to 16 ms, and typically you will see
32ms swings.

For more infomration see:

I have yet to test Vista or Longhorn server, but they should be at
least as good.

Incidentally, you can tweak many Windows Time Service settings via the
registry or change many machines network-wide via Group Policies. For
example, if you want your clients (and non-domain-controller servers)
to keep beter time, you need to increase the frequency at which the
system timer is updated by the time service (I can't remember the
paramter name right now, but Microsoft TechNet has all those answers).

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