Solution to the problem that the system time in the VirtualBox virtual machine cannot be adjusted

The system time in the VirtualBox virtual machine cannot be adjusted. Because a software trial requires that the system time be set to a specific date, you can use the date/time adjustment function provided by windows to set the time, it takes several seconds to recover to the same time as the host, even if the Internet time server is disabled. I finally found a solution for online search. 1. First go to management tools> service, stop the "windows time" service and set it to manual start. 2. open the registry in the virtual machine, find the ImagePath key under HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ VBoxService, and change its value to system32 \ VBoxService.exe -- disable-timesync 3. restart the VM and adjust the date. The above is for virtual windows systems.