The Device Descriptor Request failure error is typically due to hardware or system-specific problems. Top Reasons for the Device Descriptor Request Failed Error When you need to access essential data inside your USB devices, getting a device descriptor failure or a Generic USB Hub error message can easily cause delays. Since most computer users utilize all sorts of USB devices, this error can be frustrating. “Unknown USB Device (Device Descriptor Request Failed)” You will likely see an error message like this: Unfortunately, if the USB Device Descriptor Request Failed or Generic USB Hub error message occurs, your computer will not be able to recognize your USB device. ![]() In doing so, your PC can determine which device driver to load. The USB device descriptor is a utility that helps identify the connected device each time you try plugging in a USB device to your PC. ![]() What Is Device Descriptor Request Failed (Unknown USB Device) All About? See Also: Guide this device cannot start.
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