id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 5738,"Error in opening a USB flash drive in ""Devices"" of Virtual Box guest of Windows Vista host",Octavio Tourinho,,"When trying to open a USB flash drive in the Devices menu item of a VirtualBox guest of a Windows Vista Host one gets the following message: Error: USB device is busy. Result code: E_INVALIDARG (0x80070057) Component: HostUSBDevice Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a} Caller: IConsole {6375231a-c17c-464b-92cb-ae9e128d71c3} In short, VirtualBox is unable to capture USB device. I suspect that the reason can be found in item 3.10 of the VirtualBox ""Help"": 3.10. USB support ... ""on windows hosts a kernel mode device driver provides USB proxy support"" ... However, since Windows Vista does NOT allow kernel mode device drivers, I suspect that USB support is being broken by Vista blocking the loading of the driver. ",defect,closed,USB,VirtualBox 3.1.0,obsolete,kernel mode device driver,,Windows,Windows