I want to stop Sync from windows virtual machine and Mac OS. to do this I set Time "Not Sync" option in "Other option" menu but after few minutes date re-sync. i've also disabled ethernet to avoid sync trough Internet. Nothing to do. Ho I can solve this problem??
Yes, Parallels tools is adjusting the clock and this is reported in the Windows Security log even though the VM is configured not to. This must be a bug.
https://forum.parallels.com/threads...al-or-utc-and-how-does-time-sync-work.329854/ Cause is that your VM is probably a bootcamp important VM and has EFI enabled.