virtualmachine

1.Disable the time sync of your virtual machine:

1.1 Disable Host to Guest Timesync

VBoxManage setextradata <YOUR_VM_NAME> "VBoxInternal/Devices/VMMDev/0/Config/GetHostTimeDisabled" 1

VBoxManage setextradata <YOUR_VM_NAME> "VBoxInternal/TM/TSCTiedToExecution" 1
To revert back:

VBoxManage setextradata <YOUR_VM_NAME> "VBoxInternal/Devices/VMMDev/0/Config/GetHostTimeDisabled" 0
1.2 Disable GuestAddition Timesync

Use the regedit.exe to modify the registry.

Find this branch: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesVBoxService

Change the value in ImagePath from

system32VBoxService.exe
to

system32VBoxService.exe --disable-timesync
Restart your VM or restart the service "VirtualBox Guest Additions Service".

2.Disable the time sync of Windows.

Check the time settings. Disable internet time sync.

tools.syncTime = "0"
time.synchronize.continue = "0"
time.synchronize.restore = "0"
time.synchronize.resume.disk = "0"
time.synchronize.shrink = "0"
time.synchronize.tools.startup = "0"
time.synchronize.tools.enable = "0"
time.synchronize.resume.host = "0"

tools.syncTime = "FALSE"
time.synchronize.continue = "FALSE"
time.synchronize.restore = "FALSE"
time.synchronize.resume.disk = "FALSE"
time.synchronize.shrink = "FALSE"
time.synchronize.tools.startup = "FALSE"
time.synchronize.tools.enable = "FALSE"
time.synchronize.resume.host = "FALSE"