If your USB device is not being recognized or you are getting the "USB device descriptor request failed error", then don\u2019t worry as we have prepared an article with reliable and effective solutions to help you resolve this problem easily. USB devices are frequently used devices to transfer data easily from one to another device but it is quite prone to various types of malfunctions such as freezing issues and even the device descriptor request failed error. This sort of issue is also encountered by Windows 10 users when they are using an SD card reader. Before we start with the description of the methods to deal with the USB descriptor failure error, let me tell you a bit more about the USB not working error. Common Symptoms of the Device Descriptor Failure Error When we use a USB flash drive, pen drives, or memory cards to transfer data files then how would you understand after inserting the USB device into the USB port of your system that it is not responding?\u00a0 Well, you will immediately get some kind of error code or error message when you connect the USB device to the USB port. It will not be responding and you will not be able to open the USB folder. You will be seeing errors like \u201cUnknown USB device code 43\u201d or \u201cUSB device not recognized\u201d message. Other error messages seen are as follows: \t\u201cUSB device has malfunctioned\u201d \t\u201cTry reconnecting the device\u201d \t\u201cUSB DEVICE_DESCRIPTOR_FAILURE\u201d Also Know: Download, Install and Update MTP USB Device Driver for Windows 10,8,7 How to Recognize the Unknown USB Device Error? If your USB is not responding then you can go to the Device Manager. You will notice a yellow exclamation mark on the Universal Serial Bus controllers with a message like \u201cUnknown USB Device (Device Descriptor Request Failed)\u201d. If you open the Properties window, you might see an error message in the Device status under the General tab as shown in the image below. Why Does USB Failure Error Happen? Possible reasons behind the unknown Device Descriptor Request Failed error in Windows 10 are: \tThe USB device description is not found by the Windows. \tThe USB device is damaged or corrupted. \tThe BIOS system is not up-to-date. \tThe USB device is infected by some malware. \tThe USB device is unable to communicate with the PC. Some Quick Hacks to Fix USB Failure Error: If a request for the USB device descriptor failed, then you can try out some quick hacks before trying out the troubleshooting methods: \tRestart your system and connect the USB device again to see if it functions well now. \tConnect the USB device to another USB port. \tTry the USB device in another system to see if it's functioning normally there. If you see that the above hacks were unable to resolve the problem of the device descriptor failure, then you may proceed to follow the below detailed methods. Also Read: DNS Server Not Responding on Windows: How to Fix It? Reliable Methods to Fix USB Device Descriptor Request Failed Error: If your USB has stopped responding then you can use the below suggested hacks and fixes to troubleshoot this error and make your USB up and running again. Method 1: Remove and Reinsert the Power Supply Fix the issue of USB device descriptor request failed by reinserting the power supply. If the problem has occurred due to faulty power supply, then you can easily disconnect the power plug from the laptop. Then, you can reconnect the power supply again and restart your system. Post this, insert the USB device in the USB port of your machine and see if your USB device is responding now. If not, then it could be due to some other issue that would have to be dealt with the help of some other solution. Method 2: Uninstall the USB Driver When the device descriptor failure error happens then it could possibly be due to faulty drivers. How would the drivers become faulty? It can happen when the Windows Updates automatically tries to update the device drivers and mistakenly installs corrupted or the wrong drivers for the USB device driver. Hence we will see how you can address this issue by uninstalling and reinstalling the USB device driver with the help of the Device Manager. \tOpen the Device Manager and look for the Unknown USB Device (the one with the yellow exclamation mark sign) under the Universal Serial Bus controllers. \tClick-right on the Unknown USB Device and select the \u201cUninstall device\u201d option from the context menu. \tOnce the installation process completes, then unplug the USB device from the system. \tReplug it in the USB port. \tNow, on the Device Manager window, choose the option of \u201cScan for hardware changes.\u201d \tOnce the scanning begins, Windows will automatically look for the missing Unknown USB Device drivers. \u00a0 \u00a0 \u00a0 This should ultimately fix the device descriptor failure problem. Also Know: Quick & Easy Ways to Fix \u201cCould Not Connect to the Steam Network\u201d Error Method 3: Update the USB Driver Automatically with Driver Updater Tool If you are wondering how to update the USB driver then you can do so automatically with the help of the best driver updater tool. Installing Bit Driver Updater on your system can help you to scan your system properly. This would identify the device drivers that are corrupted and outdated. You can then install the updated versions of the drivers with the help of this tool and get rid of the device descriptor failure error. Updating the device drivers automatically is always recommended as you don\u2019t need to worry about downloading the correct drivers on your own. It is also quite a time saving method.\u00a0 Another plus point of using a driver updater tool is that it always scans and checks all the system drivers to ensure that they are never in an outdated state, so that your system is able to perform smoothly. However, you can also update the USB driver manually as described in the below point. Method 4: Update the USB Driver Manually with the Device Manager Alternatively, you can also update the USB driver with the help of the Device Manager. Here are the steps to do so: \tGo to the Device Manager and\u00a0 expand the Universal Serial Bus controllers section. \tRight click on the flagged Unknown USB Device and choose the \u201cUpdate Driver\u201d option. \tYou will get a prompt with two options. You need to click the first option of \u201cSearch automatically for updated driver software.\u201d \tWindows will automatically look for the drivers and download and install them on your system.\u00a0 \tRestart your system and access your USB files. Method 5: Switch Off Fast Startup Fast startup feature helps the computer to boot up faster. It is related to hibernate and shutdown of the system. But sometimes some users report that if this feature is turned on then it makes the Windows perform so quickly that it fails to detect the USB device and ultimately leads to the USB device descriptor error in Windows 10 computers. So there is a way in which it can be turned off. Here\u2019s how you can do so: \tGo to the Control Panel. \tThen click on the \u201cChoose what the power button does\u201d option from the side panel. \tAfter that click on the \u201cChange settings that are currently unavailable\u201d option.\u00a0 \tUncheck the box adjacent to the \u201cTurn off fast startup (recommended)\u201d option under the Shutdown settings. \tThen, save the changes and restart your computer. Also Read: How to Fix Windows Modules Installer Worker High CPU in Windows 10 Method 6: Troubleshoot the USB Device Descriptor Failure Error Now if the device descriptor error request failed in Windows 10, then you can try addressing the problem with the in-built Windows Troubleshoot tool to fix underlying issues. Here is how you can do it? \tSearch for the Troubleshoot tool in the Start menu search box and click to open it. \tThen, go to the Hardware and Devices option of the Troubleshoot window. \tThen, click on the \u201cRun the troubleshooter\u201d button and wait for it to finish. \tIf problems are found then it will be fixed automatically by the tool. USB Device Descriptor Request Failed Error: Solved We often come across the USB failure error in our day-to-day lives. But it is quite a fixable problem. Now that you have been through the symptoms, causes, and possible hacks and reliable solutions to fix your USB device descriptor request failed error, hopefully you will now be able to troubleshoot the error on your own.