id summary reporter owner description type status component version resolution keywords cc guest host 10844 Failed to attach the USB device to virtual machine Rony Shapiro "64bit Windows 7 host, various 32 and 64 bit Linux guest distributions, 4.1.18r78361 extensions package installed. Cannot get USB device to be recognized by guest (check via lsusb). Sometimes, selecting the device in the Devices->USB Devices menu just has no effect (entry doesn't get checked), and sometimes I get the following: Failed to attach the USB device Yubico Yubikey II [0224] to the virtual machine pws-deb6. USB device 'Yubico Yubico Yubikey II' with UUID {3c66074d-0580-47fd-921e-81da094dd391} is busy with a previous request. Please try again later. Result Code: E_INVALIDARG (0x80070057) Component: HostUSBDevice Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a} Callee: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb} --- Notes: - Other USB devices can be successfully attached. - Playing with the USB filter settings has no effect. - On another 64bit Windows 7 host, running the same versions of VirtualBox and guest, the same (physical) device is successfully passed through to the guest. (Unfortunately, I need this working on the machine that fails...). Please advise. P.S. The device vendor has offered to provide assistance, including device samples." defect new USB VirtualBox 4.1.18 USB E_INVALIDARG Linux Windows