Fix: unknown usb device descriptor request failed

unknown usb device descriptor request failed

Fix: unknown usb device descriptor request failed

USB Device Descriptor Request Failed

If you are experiencing the USB device descriptor request failed error, one potential solution is to run the Windows Hardware and Device troubleshooter. This built-in tool can help diagnose and fix issues related to hardware devices connected to your computer, including USB devices. To access this troubleshooter, go to the Control Panel, select Troubleshooting, then click on Hardware and Sound.

Another option for resolving this issue is to recover or update the device drivers associated with your USB device. Outdated or corrupted drivers can sometimes cause errors such as the USB device descriptor request failed message. You can manually update your drivers through Device Manager by right-clicking on your affected USB device, selecting Properties, then clicking on Update Driver Software. Alternatively, you can download and install a driver updater program that will automatically scan for and update any outdated drivers on your computer.

What is a USB Device?

What is a USB Device

A USB device is a type of peripheral that can be connected to your computer via a USB port. It is used to transfer data between the computer and the device or to charge the device’s battery. USB devices come in various shapes and sizes, such as flash drives, external hard drives, printers, scanners, cameras, and smartphones.

When you plug a USB device into your computer for the first time, it will usually prompt you to install any necessary drivers or software. If your computer fails to recognize the device or displays an error message like “unknown usb device descriptor request failed,” there may be compatibility issues between the two devices. To fix this problem, you can try updating your computer’s drivers or choosing a different USB port.

Choosing a different USB port may also help if your current one is faulty or damaged. In some cases, using a USB hub can also cause issues with certain devices due to power supply limitations. Therefore, it’s essential always to choose reliable cables and ports when working with USB devices.

Causes of Error Message

Causes of Error Message

One of the most common causes of error messages such as “unknown USB device descriptor request failed” is driver issues. This usually happens when your computer’s operating system fails to recognize or find the appropriate drivers for a particular device connected through USB. To fix this, you can try updating your drivers by following these steps: (1) open Device Manager, (2) right-click on the unknown USB device, (3) select “Update driver software,” and (4) follow the prompts.

Another cause of error messages is hardware problems. In some cases, an issue with either the USB port or cable could be causing the problem. One way to troubleshoot this is to try connecting the same device to a different USB port or using a different cable altogether. If that doesn’t work, you may need to have your hardware checked by a professional.

Lastly, malware infections can also cause error messages when trying to connect devices via USB. Malware can corrupt files and interfere with normal system functions resulting in errors such as “unknown USB device descriptor request failed.” To prevent this from happening, make sure your antivirus software is up-to-date and perform regular scans on your computer system.



One of the most common problems associated with USB devices is the “unknown USB device descriptor request failed” error. This issue can be incredibly frustrating for users, as it prevents them from using their external devices properly. Fortunately, there are a few solutions to this problem.

One solution is to update the driver for the USB device in question. To do this, simply open up Device Manager and find the device that’s causing issues. Right-click on the device and select “Update Driver”. You’ll then be prompted to choose whether you want Windows to search online for an updated driver or if you want to browse your computer’s files for one.

Another option is to try uninstalling and reinstalling the USB controller drivers in your system. To do this, navigate back to Device Manager and locate Universal Serial Bus controllers. Right-click on each item under that heading and select “Uninstall device.” Once all USB-related devices have been uninstalled, restart your computer so that they can be automatically reinstalled upon reboot.

In some cases, simply disabling Fast Startup feature in your Windows operating system could resolve this issue.

1. Update Device Drivers

Update Device Drivers

Firstly, if you’re experiencing an issue with an unknown USB device descriptor request failed error message on your Mac, updating your device drivers might be the solution you need. This can be done by navigating to the “About This Mac” option under the Apple menu and selecting “Software Update.” Check for any available updates and ensure that all necessary drivers are installed.

Additionally, if you have a specific device causing issues, it’s recommended to visit the manufacturer’s website and download any updated drivers or software. Be sure to follow their instructions carefully during installation.

Another helpful tip is to check for any loose connections or damaged cables as this could also be contributing to the problem. If all else fails, pressing the reset button on your device may do the trick in resolving any connectivity issues between your Mac and USB devices.

2. Uninstall & Install USB Controllers

Uninstall & Install USB Controllers

To fix the unknown USB device descriptor request failed error, one of the steps is to uninstall and reinstall USB controllers. To do this, open the Device Manager by searching for it in the Windows search bar or pressing Windows key + X and selecting Device Manager from the menu. Under Universal Serial Bus controllers, right-click on the affected device and select Uninstall device. Then click on Uninstall when prompted.

After uninstalling, restart your computer and Windows will automatically reinstall the USB controller drivers. If that doesn’t work, you can try updating or rolling back the driver by right-clicking on the affected device in Device Manager, selecting Properties, then going to Driver > Update Driver or Roll Back Driver.

Keep in mind that there may be multiple USB controllers listed under Universal Serial Bus controllers in Device Manager, so make sure to uninstall and reinstall them all if you continue experiencing issues with your USB devices.

3. Update BIOS/UEFI Firmware

Update BIOS/UEFI Firmware

Updating your computer’s BIOS UEFI firmware is an essential task to ensure that your device runs smoothly and securely. By upgrading its firmware, you can fix issues with your system’s hardware, improve stability, and even add new features. One of the most notable benefits of updating your BIOS UEFI firmware is enhanced compatibility with new devices and software.

However, updating the BIOS UEFI firmware can also involve some risks. If something goes wrong during the process, it can result in data loss or even damage to your system’s hardware. Therefore, it’s crucial to back up all your important data before proceeding with the update. Additionally, make sure you follow the manufacturer’s instructions carefully and avoid any interruptions such as power outages during the process.

If you encounter errors such as “unknown USB device descriptor request failed” after updating the BIOS UEFI firmware, there are a few things you can do to resolve them. Firstly, try connecting another USB device to check if it works correctly. If not, try reinstalling drivers for USB controllers or use a different port on your system. In case none of these steps work, consider seeking professional help from a data recovery service provider who can assist in retrieving lost files due to any failures caused by updating BIOS UEFI firmware.

4. Change Power Settings

Change Power Settings

When fixing the “unknown usb device descriptor request failed” error, changing power settings is one of the possible solutions. This can be done by going to Device Manager and accessing USB Root Hub Properties. Under Power Management tab, you can uncheck “Allow the computer to turn off this device to save power”. This will ensure constant power supply for USB devices.

Another change that can be made in power settings is adjusting the USB selective suspend setting. This feature allows Windows to automatically suspend inactive USB devices to save power. However, it may also cause issues with some USB devices. To disable this feature, go to Power Options > Change Plan Settings > Change Advanced Power Settings > USB Settings > Selective Suspend Setting and set it as Disabled.

Overall, making changes in power settings can help fix the “unknown usb device descriptor request failed” error by ensuring sufficient and constant power supply for connected devices as well as disabling features that may cause conflicts with certain USB devices.

Conclusion: Fixing the Error

In conclusion, fixing the error “unknown USB device descriptor request failed” can be a tricky task, but one that is not impossible. The first step in addressing this issue is to identify the root cause of the problem. This could be anything from outdated drivers or hardware malfunctions to incorrect settings on your computer.

Once you have identified the root cause of the error, it’s time to take action and fix it. One solution is to try updating your drivers or reinstalling them altogether. Another option would be to check if there are any hardware issues with your USB ports or devices by testing them on another computer.

It’s important to note that there may not be a one-size-fits-all solution for this error, so it’s essential to do thorough research and try out different solutions until you find one that works for you. In any case, taking the time and effort to fix this error will save you a lot of hassle in the long run and ensure that your devices function correctly without any errors popping up out of nowhere.