id summary reporter owner description type status component version resolution keywords cc guest host 8414 Cannot restore snapshot with USB pack uninstalled romkyns "If the Extras pack is not installed, it is perfectly possible to START a VM that has USB configured. It warns that USB will actually be disabled, and gets on with it. Everything works fine. If you then make a snapshot and try to restore it, it will say that USB is enabled but not installed, and hence the snapshot cannot be restored. I haven't found a way to convince VirtualBox to disregard USB, so for now it's a snapshot-loss bug, which is quite serious. ""Implementation of the USB 2.0 controller not found!"" Result Code: E_FAIL (0x80004005) Component: Console Interface: IConsole {515e8e8d-f932-4d8e-9f32-79a52aead882} " defect closed other VirtualBox 4.0.4 duplicate other other