The "Unknown USB Device" (Descriptor Request Failed) error typically occurs when Windows fails to recognize a USB device, often due to a problem with the device itself, its drivers, or the USB port. Here are several steps you can take to resolve this issue:
1. Restart Your Computer
- Sometimes, simply restarting your computer can fix the issue, especially if it’s a temporary glitch.
2. Try a Different USB Port
- Plug the device into a different USB port. If it works, the original port might be faulty.
3. Unplug Other USB Devices
- Disconnect all other USB devices from your computer to avoid conflicts, and then reconnect the problematic device.
4. Check Device Manager
- Open Device Manager by pressing
Win + Xand selecting Device Manager. - Look for the Unknown USB Device entry under the Universal Serial Bus controllers section.
- Right-click on it and select Uninstall Device.
- Disconnect the USB device, restart your computer, and then reconnect the device. Windows should reinstall the drivers.
5. Update or Reinstall USB Drivers
- In Device Manager, right-click on the Unknown USB Device and select Update Driver.
- Choose Search automatically for updated driver software to let Windows find and install the latest drivers.
- Alternatively, download the latest drivers from the manufacturer’s website and install them manually.
6. Disable USB Selective Suspend Setting
- Open Control Panel > Hardware and Sound > Power Options.
- Click on Change plan settings next to your active power plan.
- Click on Change advanced power settings.
- Expand USB settings > USB selective suspend setting, and set it to Disabled.
- Apply the changes and restart your computer.
7. Check for Windows Updates
- Ensure your Windows OS is up to date, as updates often include fixes for hardware issues.
- Go to Settings > Update & Security > Windows Update, and check for updates.
8. Test the Device on Another Computer
- Plug the USB device into a different computer to see if it works. If it does, the problem is likely with the original computer's USB port or drivers.
9. Check the USB Device for Faults
- The device itself may be faulty. If possible, try using a different USB cable or a different device to determine if the issue is with the hardware.
10. Run Windows Troubleshooter
- Go to Settings > Update & Security > Troubleshoot.
- Run the Hardware and Devices troubleshooter to automatically detect and fix problems.
If none of these solutions work, the USB device may be damaged or incompatible with your system. Consider contacting the device manufacturer for further assistance.
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