Not sure how this happened, but one of our client’s domains was running about 23 minutes ahead of time. Short of it having a flux-capacitor this needed to be fixed;
NB: Thanks to the very informative article at Microsoft (http://support.microsoft.com/kb/816042) and Windows Networking (http://www.windowsnetworking.com/articles_tutorials/Configuring-Windows-Time-Service.html)
Open up regedit on the PDC and navigate to;
This is the how the time service should be updated, change this to NTP (for sync’ing externally) NT5DS will check the server’s own CMOS clock.
Change this from 10 to 5.
Now this is your source of time. I use pool.ntp.org,0x1 (note the 0x1 is required when you use the DNS name); if using IP address (in this case pool.ntp.org), you can use 126.96.36.199.
Then restart your W32Time service; updates can take up to an hour so you can force update by using
- w32tm /resync /rediscover
Then just double-check your eventlogs and ensure that are no errors/warnings.