A request for the USB device qualifier descriptor failed.Ī request for the USB serial number string descriptor failed. A request for the USB BOS descriptor failed. The USB device returned an invalid serial number string. A request for the USB device's port status failed. A request for the USB configuration descriptor failed. The USB device returned an invalid USB device descriptor. The USB device returned an invalid USB configuration descriptor. A previous instance of the USB device was not removed. A request for the USB device descriptor failed. In Windows 8, when such failures occur, the General tab in Device Manager displays a USB-specific error message that indicates the reason for failure. Typically, enumeration failures occur when requests sent to the USB device fail or the device returns incorrect descriptors.

At times, Windows can fail to enumerate an attached USB device. New USB-specific failure messages in Device Manager. For more information, see Setting Up a USB 3.Ġ Connection Manually. You can use USB WPP and event tracing to analyze USB interactions and troubleshoot USB device issues more easily. 0 kernel debugger extensions that examine USB 3. 0 debugging tools to improve diagnosing USB issues faster. Enhanced debugging and diagnostic capabilities. You can boot with your copy of Windows from those drives on various machines. The Windows to Go feature allows Windows to boot from a flash drive or an external drive. The new driver uses static streams for bulk endpoints, as per the official USB 3. Windows 8 includes a new USB storage driver that implements the USB Attached SCSI Protocol (UASP). For more information, see What's New for USB Client Drivers. The Windows Driver Kit (WDK) for Windows 8 provides new device driver interfaces (DDIs) that client drivers can call to use new features and improvements.

sys) implements function suspend and remote feature wake-up features, as per the USB 3. The new driver stack implements several new capabilities, such as static streams support.

0 device is attached to an xHCI host controller. The new stack includes drivers that are loaded by Windows when a USB 3. Windows 8 includes a new driver stack to support USB 3. Windows 8 includes the following new USB features.

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