I have a server 2008 Enterprise server that constantly loses exactly one hour. I reset it, reboot, it does it again. I checked all the obvious things. Time zone, DST, EST. I once found a command to run the time sync in cmd and ran it. It seemed to stick for a day or so, then started again. This is a virtual machine running on ESXi5 vCenter.
There is another vm in the network that does NOThave the problem. That other vm is set On the local host to sync time with the virtual machine. Maybe I should try making that same setting on the problem server and see what happens? The host time is always correct. The vm was not copied. What could be the issue?