Hi, I have a USB Audio device that has firmware that complies with the USB Audio specification. When I plug it into an XP SP2 machine it loads properly and works ask expected using the inbox MSFT driver. But, when I plug into Vista the driver installs, but fails to start. I tried to debug it a bit and saw that the a return value was // // MessageId: STATUS_DEVICE_CONFIGURATION_ERROR // // MessageText: // // The I/O device is configured incorrectly or the configuration parameters to the driver are incorrect. // This was the return when it was trying to create filter factories. I believe it is a USB 2.0 Audio device. It supports stereo audio. Is there a known problem with the USB Audio driver in Vista? It seems to me that if it works under XP SP2, it should also work under Vista.