NTP time 3 minutes out

I have set my Windows 2012 R2 PDC to sync from external source 0.uk.pool.ntp.org and 1.ntp.uk.pool.ntp.org, however, my domain time is 3 minutes out.

I believe syncing is occurring because if I manually change the time on the PDC it automatically resets back to 3 minutes out every 60 seconds (which is the polling interval). I have also ran w32tm debug and the log shows no obvious errors.

Where else can I check?

Or is there a more reliable external time source?

Any help would be greatly appreciated...
matedwardsAsked:
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MacleanSystem EngineerCommented:
Check that guess does not sync with host as per Chris his suggestion
Check that NTP is set on PDC
Check that you do not have a GPO telling systems where to get time from (You can, but they will usually go straight to PDC for this info, so it is not needed as GPO)
Check that you can manually sync from that source on the PDC (Change time, do a sync using w32tm /resync)
You can just point to uk.pool.ntp.org. You do not need to put all sub pools in individually.
From memory the cmd to run for setting this is as per below.

w32tm.exe /config /manualpeerlist:"uk.pool.ntp.org,0x1" /syncfromflags:manual /reliable:YES /update
w32tm.exe /config /update
sc stop w32time && sc start w32time 

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ChrisCommented:
Is you DC virtual? if so check that Guest services aren't syncing the Time from the Host to the Guest which will screw up time sync for the PDC

how have you setup the time sync, have you do it via group policy?
If so can you share the settings
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matedwardsAuthor Commented:
Thanks Chris.. It is indeed a VM (Hyper-V)
Will check host now..
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matedwardsAuthor Commented:
Yep, I have un-ticked Time Synchronization in Hyper-V and set w32tm to resync on the PDCe. There is no Group Policy, so expecting all clients will resync in good time.

Many thanks Chris for the first answer and Maclean for the comprehensive answer.
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matedwardsAuthor Commented:
Yep, I have un-ticked Time Synchronization in Hyper-V and set w32tm to resync on the PDCe. There is no Group Policy, so expecting all clients will resync in good time.

Many thanks Chris for the first answer and Maclean for the comprehensive answer.
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