supports executing the VBoxSVC in Windows session 0. This allows VBoxSVC to run like a regular Windows service, which in turn enables headless VMs to continue running even if the user logs out.

The feature is disabled by default and can be enabled by creating a REG_DWORD value ServerSession0 in the key HKEY_LOCAL_MACHINE\Software\Oracle\VirtualBox\VBoxSDS of the Windows registry. Specify 1 as the value's data to enable the feature, or 0 to disable the feature. A host reboot is needed in order to make the change effective.