Active Directory: Time Server

A quick one on running AD as an authoritative time server. My AD server and member servers, workstation etc had lost about 15 minutes over several months.

Fix:

Reference: Technet Forum

And the other trick that I actually think got it to work, was to untick the “Time Synchronisation” option under “Integration Services” in Hyper-V for the VM (where my AD servers are hosted). In essence, it was creating a circular reference:

Reference: http://rickgaribay.net/archive/2009/04/28/disabling-time-synchronization-with-hyper-v.aspx – thanks.

Windows Event ID: 35 gave me a clue:

The time service is now synchronizing the system time with the time source VM IC Time Synchronization Provider.

Update:

Having just turned on System Center VMM, my DC and all clients lost about 20 minutes. I went looking for a solution on Google and found this post (Question 4). According to the author, one should not disable the Hyper-V Time Synchronisation Integration service.

I haven’t looked too much into it at the moment and turning on SCVMM server might be a red herring. I reran the commands above and all was fine again.

There’s more information on how to do it right here.

Watch this space…

 

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