Just had a problem where two domain controllers (2008) were out of sync by about 20 min. No problem – just change the time on the one that’s out (just happens to be a VM)? Well as soon as I changed the time – it reverted back to the wrong time??
Ran “w32tm /query /source” to find out where it was syncing to and it came back with :
VM IC Time Synchronization Provider
Aha! VM! So I took a look at the Hyper V host and sure enough – it was showing the wrong time! So fix the host and you fix all the clients….