Hi,
I have got a vCenter environment compromising of 5 ESXi machines. One of the machines does not belong to an HA/DRS cluster, but the other 4 are part of the cluster. I configured everything as per VMware VMware KB: Synchronizing ESXi/ESX time with a Microsoft Domain Controller
article. All my clients automatically sync to a time server, but not the ones that I specified. All of them have the same time, but it is different than the time on my DCs and the rest of the network. Even when I turn off the NTP server on my ESXi host and also turn off NTP client on my ESXi hosts and set the time manually, the time returns back within 30 seconds to the time before. This does not happen on the ESXi host that is not part of the cluster. I mean when I set the time manually on the ESXi host that is not part of my cluster, the time does not change. On all the other hosts, the time returns back to the same time with NTP server enables or not. Please helpppppppppppppppp.