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...