Windows Server 2008 guest system time changing

[itmv2]

I have Windows Server 2008 running as a virtual guest on a VMWare ESXi 6.5 host. Every few days the time on the server seems to change to a different time zone - it skips 2 hours backwards. For example I found this in the Event Viewer this morning, at a time when the server was unattended:

The system time has changed to ?2017?-?11?-?10T07:30:27.375595100Z from ?2017?-?11?-?10T05:25:54.594287500Z.

I have both the guest OS and ESXi host configured to update from the NTP server (time.windows.com). I also tried time.nist.gov as well but still got the problem.

Any idea why these unwanted updates are occurring?

[mhampto]

To rule out any interference form the ESXi host see Disabling Time Synchronization (1189).

Also if needed:

• Verifying time synchronization across an ESX/ESXi host environment (1003736)
• Timekeeping best practices for Windows, including NTP (1318)

[bhards4]

Hi,

Please install vmware tools into the virtual machine to sync the time with ESXi and the vm.

-Sachin