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virtual domain controller time problems

Posted on 2010-09-17
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Last Modified: 2012-05-10
Hello Experts
here let me explain whole setup. we had only one domain controller (WIN SVR 2008) as physical box, then we converted it to virtual on Hyper V,
currently I have that old DC runnings as virtual,  got one more bkup DC running virtual. and recently added one more physical DC as well to ensure uptime incase if virtual DC's failes etc.

since long time we are having Time synchonising problems, clocks used to go behind the actuall time on all DC's and network PC's and if we dont update time manually on main DC , time on whole network goes back 4-5 min everyday. and yes its not just like that since last one week instead of getting behind now time is in future. currently all dc's and network pc's are 10 min more than actual time.

could anyone list the steps how to get time sorted properly, which server should synchorinise with what time source,  Hyper V guset time services to DC's etc , please suggest best setup in terms of time on virtual/phyiscal DC's
Thansk
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Question by:H-Singh
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Mike Thomas earned 1000 total points
ID: 33699898
Sounds like the DC responsible for times possibly syncing with the VM Host, if you disable this option things should go back to normal, also if you have not configured a time server use this guide.


http://www.windowsnetworking.com/articles_tutorials/Configuring-Windows-Time-Service.html
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by:H-Singh
ID: 33699927
I just disabled time sync service offerd to virtual machine from HYPER V to Main DC,

now if i run cmd w32tm /resync on main DC it says "the computer did not resync because no time data was avialable"  so i think main DC is configured to get time from hardware hyper v server,  
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by:Mike Thomas
Mike Thomas earned 1000 total points
ID: 33699935
If that is the case reconfigure the main DC to pull time from and external time source.
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Author Comment

by:H-Singh
ID: 33699967
I just corrected the time on main DC to current time manullay.

and run the cmd  w32tm /resync   on other DC's and network PC's they all got new time and now on current correct time,

but if I run cmd on HYPER V server to correct its time it says command completed successfully but time is still old out of clock, that means hyper v server not getting time from DC/Active directory.
PS: hyper v server are member of same domain that DC's running on it as virtual.

i need to configure main DC win server 2008 to get time from internet
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Author Comment

by:H-Singh
ID: 33700175
I think this works for me now.

removed time service intigrations offered by hyper v to all dc's.

applied this fix from MS site http://support.microsoft.com/kb/816042 

I will monitor for weekend and update topic how it goes till monday.

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Author Closing Comment

by:H-Singh
ID: 33745494
got hints from answer and changed more settings by following MS article
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