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.

[Octavio Tourinho]

For some reason I cannot pinpoit the error has disappeared. Please disregard this bug report

Replying to otourinho:

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.

[Octavio Tourinho]

The error has reappeared and affects not only the USB flash drive, but also the USB to parallel adapter. Once it is unable to "connect", not even rebooting the virtual machine is capable of reverting the "busy" state on USB. I could not pinpoint what sequence of events led me to being able to connect successfully once before.