Windows Time: check and configure NTP synchronization

My local system’s clock differed from the time.windows.com NTP server by 11 seconds. I used the following checks before configuring the Windows Time service.

Open a command prompt and run the following command to check your local time service:

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w32tm /stripchart /computer:time.windows.com /samples:5 /dataonly

I trust Microsoft to maintain its time infrastructure, but I still performed two additional checks against nist.gov servers:

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w32tm /stripchart /computer:time.nist.gov /samples:5 /dataonly
w32tm /stripchart /computer:time-b.nist.gov /samples:5 /dataonly

Configure the Windows Time service

I am now manually configuring the Windows Time service to synchronize the local time with Microsoft's NTP peer:

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w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update

Three new events are generated in Windows Vista:

The time service is now synchronizing the system time with the time source time.windows.com (ntp.m|0x0|0.0.0.0:123->207.46.232.182:123).

The system time has changed to 3/7/2008 9:51:02 PM from 3/7/2008 9:51:13 PM. (My 11s ;-))

The system time has changed to 3/7/2008 9:51:02 PM from 3/7/2008 9:51:02 PM.

A final stripchart check shows an offset of 00.xxxx. Consider these steps for your Active Directory PDC domain controller and the time source for your domain. For more information, see this article.