Regardless of whether you turn on VMware Tools periodic time synchronization, time synchronization occurs when the VMware Tools daemon is started (such as during a reboot or power on operation), when resuming a virtual machine from a suspend operation, after reverting to a snapshot, and after shrinking a disk. When the operating system starts or reboots, and when you first turn on periodic time synchronization, synchronization can be either forward or backward in time. For other events, synchronization is forward in time. To disable time synchronization completely, you must edit the configuration file (.vmx file) of the virtual machine and set several synchronization properties to FALSE.
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2 Select the Time synchronization between the virtual machine and the host operating system check box.