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Time Server issues 2008 Domain

Posted on 2013-11-28
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Last Modified: 2014-02-02
Evening All

I have a AD domain in a Hyper-v Cluster and have the following setup:

I have a 2003 DC outside of the Cluster, I have 3 virtual DC's in my Hyper-v environment which includes Lon-DC1 is the FSMO role holder for ALL roles.

I am how having issues with the time on all servers and clients being 10 minutes out.

I have tried changing the time on Lon-dc1, Lon-dc2 and Server9 which is the DC outside of my Hyper-V cluster. If I change the time then within a minute or two the time has changed back.

I have also tried changing the time on the two Hyper-V hosts but they also revert back.

Any help or tip would be greatly appreciated

Thank you
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Question by:cmlbaete
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6 Comments
 
LVL 53

Expert Comment

by:Will Szymkowski
ID: 39684458
You need to set the external time source on the DC holding the PDC role.

Use the link to configure this - http://support.microsoft.com/kb/816042

Once you have configure an external time source on the PDC go to your other DC's and run the following command...

w32tm /resync

This will then update its time from the PDC. All other authenticating clients will slowly resync there clocks automatically based on the DC they are authenticating to.

Will.
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LVL 14

Expert Comment

by:Andy M
ID: 39684882
We had this issue on a few of our client's Hyper-V systems, even with a physical DC running PDC. Turns out each VM was defaulting to use the Hyper-V host clock settings rather than the PDC.

You need to disable the time synchronization on the Hyper-V integrated services for each of the Hyper-V VM's then set each VM to use the domain hierarchy/PDC for time sync (if they don't change automatically).

Alternatively ensure the Hyper-V host is synchronizing it's time with the physical DC/PDC.
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LVL 1

Author Comment

by:cmlbaete
ID: 39695768
I have removed the Time Sync on all the of the VM's and set the DC's to the same time but they have managed to revert back.

Is it possible to see which server on the domain is the NTP server? I have tried changing the PDC but that does change back sadly.
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LVL 14

Expert Comment

by:Andy M
ID: 39698065
Hi

If you open command prompt and type:

w32tm /query /status

This will tell you where the server is getting it's NTP settings from (Source heading, about second from bottom of the list). You can run this on each server to find out where they are all getting their time from.
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LVL 1

Accepted Solution

by:
cmlbaete earned 0 total points
ID: 39815449
I have solved this one - It looks like the Server in China (our smallest office) has become the Time server. I am not sure how this happened but I did read that servers can "force" an election to enable another server to take over if the current one is offline or not responding. This doesn't appear to be the case here though.
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LVL 1

Author Closing Comment

by:cmlbaete
ID: 39827461
I believe I resolved the fault but my only concern is why another server with our lowest amount of user has taken over the role as the time server.
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