If these hacks could not fix the problem and you are still wondering how to fix the unknown USB device (device descriptor request failed), then move onto the next methods.
Check if the USB device is functioning in another system, then it would indicate if its a device issue or system driver issue. Remove the power supply of the system and then connect it again. Change and connect the USB device to another USB port of the system. Reboot your computer and then reconnect the USB device to see if it is now functioning normally. You can try these hacks and tips to resolve some temporary glitch or issue easily: If you want to know how to fix the device descriptor request failed error, then read ahead to find the hacks and various troubleshooting methods in detail.īefore we explain the advanced methods, let’s take a look at some quick hacks that can resolve the unknown USB device (device descriptor request failed) easily. If the USB device driver is not found by the Windows, then also it could lead to this error.ĥ Ways To Fix Unknown USB Device Descriptor Request Failed Error. Another cause is when the USB device is unable to communicate with the system. If the USB device is infected with a virus or some form of malware, then it may cause this error. The BIOS (basic input/output system) system is not updated. The USB device could be faulty or corrupted. What Causes Unknown USB Device Error (Device Descriptor Request Failed)?Īfter gaining some familiarity with the device descriptor, let us now see what causes the unknown USB device (device descriptor request failed) error. It is a 16-bit field containing the number. 
IdProduct – This particular number is assigned by the manufacturer to a specific product for the purpose of identifying it. IdVendor – Every company that produces USB devices is assigned this number which is basically a Vendor ID. So, when a device is connected to the Windows operating system, then it uses these specially designated numbers to understand which device driver has to be loaded. There are specific numbers such as the idVendor and idProduct which are responsible for identifying the connected devices in a system.
The USB_DEVICE_DESCRIPTOR forms the main base of the descriptor tree. Method 5: Disable the Fast Startup Option What is a Device Descriptor?
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