How long does it take for the workstations to get their time from the PDC

The PDC Emulator in the root domain is generally configured to sync its local clock with an authoritative NTP server. This NTP server may be located on the internet, such as time.windows.com, or it can be a device on your internal network, such as a GPS atomic clock. The PDC Emulators in the child domains will synchronize their time with the root PDC Emulator. Domain Controllers in the domain sync with the PDC Emulator in their respective domains. Clients will then sync their clocks with the DCs in their domain. Time Synchronization is critical for the Kerberos protocol to authenticate successfully.

BR,
Andrei

how often do the clients sync with the PDC

what is the proper command on a 2008 server to set it clock to time.windows.com.  I tried net time /setsntp:time.windows.com, but it doesn't work.

http://technet.microsoft.com/en-us/library/cc758905%28WS.10%29.aspx

read here.

The article didn't help.  I used the syncfromflags:time.windows.com and got unknown parameter for syncfromflags: 'time.windows.com

I think I got it.  I ran w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update.  It stated it was successful.  Did I do it correctly?

yep, that`s correct.

Thanks.  FYI the post 34878754 has a typo.  /manualpeerlisteers, should be /manualpeerlist:peers

thanks

hope you're still monitoring this.  I have three locations.  one I enter the command
w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update. on one of the PDC's then run w32tm /query /source.  It states free-running system clock.  I tried three times?  why wont it change to time.windows.com?

I just looked in the registry and it states the NTPServer is time.windows.com