How to sync time on Windows 2008 R2 during startup

time-synchronizationwindows-server-2008-r2

I've got a remote Windows 2008 R2 Server which I'd like to sync up time during startup against a list of 5 NTP servers. How could this be accomplished?

EDIT:
Found the solution – I've use Windows Task Scheduler to run "w32tm /resync" on startup when there is network connection, with 30 sec delay.

Should solve the problem.

Thanks for the help.

Best Answer

Install ntpd. The builtin time synchronization in windows is far to imprecise to be useful. I use this implementation on my windows machine, pretty easy to setup, you edit a text-file and add your servers.

http://www.meinberg.de/english/sw/time-server-monitor.htm

Be sure to disable W32Time in your services to prevent it from synchronizing time with other services.

Related Solutions

Windows Server unable to synchronize NTP time reliably

Jeff, I found this article. Might be of some help to you. You might have already read this but I thought it was worth a shot.

HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags
This registry entry controls whether the local computer is marked as a reliable time server (which is only possible if the previous registry entry is set to NTP as described above). Change this REG_DWORD value from 10 to 5 here.

UPDATE As per Jeff, best source of reference is http://support.microsoft.com/kb/816042

Windows Domain – Time Not Propagating to Machines

Try this on the PDC hosting the correct time

NET TIME /SETSNTP:time.windows.com 
NET STOP W32TIME
NET START W32TIME
W32TM /config /reliable:YES
W32TM /resync /rediscover

then on each of the "client" NTP machines

W32TM /resync /rediscover

Best Answer

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Windows Server unable to synchronize NTP time reliably

Windows Domain – Time Not Propagating to Machines

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