Unknown USB Device Descriptor Request Failed [Fix]

If you have ever plugged in a USB device and seen the error “Unknown USB Device (Device Descriptor Request Failed)” on your Windows PC, you know how frustrating it can be. The device does not work, Windows fails to recognize it, and you are left guessing whether the problem is hardware or software related.

This issue commonly appears in Windows 11 and Windows 10, and it usually means your system is unable to read the USB device descriptor, which is essential for identifying and configuring the device. The good news is that this error is often fixable with a few practical steps.

In this guide, I will walk you through clear solutions to fix this issue.

Unknown USB Device Descriptor Request Failed Windows 11/10 [Fix]

The Unknown USB Device (Device Descriptor Request Failed) error occurs when Windows cannot retrieve information from a connected USB device. To fix it, try reconnecting the device, updating or reinstalling USB drivers, disabling USB power saving settings, running Windows troubleshooting tools, and checking for hardware issues such as faulty cables or ports.

Now let’s go through the fixes one by one.

Step 1: Reconnect the USB Device Properly

Sometimes the simplest fix works because the issue is just a temporary communication failure.

Disconnect the USB device from your computer and wait for a few seconds. Then plug it back in, preferably into a different USB port. If you are using a USB hub, connect the device directly to the computer instead.

Try restarting your computer after reconnecting the device. This allows Windows to reload drivers and reset USB communication.

If the device still shows the same error, move on to the next step.

Step 2: Restart Your PC and Perform a Power Reset

A power reset can clear temporary hardware glitches that normal restarts might not fix.

Shut down your computer completely instead of restarting it. Once it is off, unplug the power cable. If you are using a laptop, remove the battery if possible. Hold the power button for about 15 seconds to drain residual power.

Now reconnect everything and turn your PC back on. Plug in the USB device again and check if it is recognized.

This step helps reset the motherboard’s USB controllers, which often resolves detection issues.

Step 3: Update USB Drivers from Device Manager

Outdated or corrupted drivers are one of the most common reasons for this error.

Open Device Manager by right-clicking the Start button and selecting it. Expand the Universal Serial Bus controllers section. Look for any device labeled Unknown USB Device (Device Descriptor Request Failed).

Right-click on it and select Update driver. Choose the option to search automatically for updated drivers. Windows will attempt to find and install the latest version.

If Windows cannot find a newer driver, do not worry. Continue with the next step to reinstall the driver completely.

Step 4: Reinstall USB Controllers

Reinstalling USB drivers forces Windows to rebuild the connection from scratch.

In Device Manager, expand the Universal Serial Bus controllers section again. Right-click on each USB controller and select Uninstall device. Do this for all entries under that section.

Once done, restart your computer. Windows will automatically reinstall all USB controllers during boot.

After the restart, connect your USB device again and check if the issue is resolved.

Step 5: Disable USB Selective Suspend Setting

Windows includes a feature called USB Selective Suspend that saves power by turning off USB devices when not in use. However, this can sometimes cause recognition issues.

Open the Control Panel and go to Power Options. Click on your active power plan and select Change plan settings, then click Change advanced power settings.

Find the USB settings section and expand it. Disable the USB selective suspend setting for both battery and plugged-in modes.

Click Apply and restart your computer. This prevents Windows from shutting down USB ports unexpectedly.

Step 6: Turn Off Power Management for USB Root Hub

Another power-related setting can also interfere with USB functionality.

Open Device Manager and expand Universal Serial Bus controllers. Right-click on each USB Root Hub entry and select Properties.

Go to the Power Management tab and uncheck the option that says Allow the computer to turn off this device to save power.

Repeat this for all USB Root Hub entries. Restart your computer and test the device again.

Step 7: Run Windows Hardware Troubleshooter

Windows has built-in tools that can detect and fix hardware issues automatically.

Open Settings and go to System, then select Troubleshoot. Click on Other troubleshooters and run the Hardware and Devices troubleshooter if available.

Follow the on-screen instructions. The tool will scan for issues related to USB devices and attempt to fix them.

This step is especially helpful if the problem is caused by system-level misconfigurations.

Step 8: Update Windows to the Latest Version

Sometimes the issue is caused by bugs in the current Windows build.

Open Settings and go to Windows Update. Click Check for updates and install any available updates.

After updating, restart your PC and reconnect the USB device.

Microsoft frequently releases fixes for hardware compatibility issues, so keeping your system updated is important.

Step 9: Check for Hardware Issues

If none of the software fixes work, the problem might be hardware-related.

Try connecting the USB device to another computer. If it does not work there either, the device itself may be faulty.

Also, check the USB cable for any visible damage. If you are using an external drive or phone cable, try a different cable.

Inspect your computer’s USB ports for dust or physical damage. Sometimes, cleaning the port carefully can solve the issue.

Step 10: Update Chipset Drivers

The chipset driver controls communication between your motherboard and USB ports.

Visit your motherboard or laptop manufacturer’s website and download the latest chipset drivers for your model.

Install the drivers and restart your system. This can fix deeper compatibility issues that generic Windows drivers cannot handle.

Step 11: Disable Fast Startup

Fast Startup can sometimes interfere with hardware initialization.

Open the Control Panel and go to Power Options. Click Choose what the power buttons do and then select Change settings that are currently unavailable.

Uncheck Turn on fast startup and save the changes.

Restart your computer and test the USB device again.

Faqs

What does Unknown USB Device Descriptor Request Failed mean

It means Windows failed to read the basic information from the USB device, so it cannot identify or use it.

Can a faulty USB cable cause this issue

Yes, a damaged or low-quality cable can interrupt communication and trigger this error.

Is this a hardware or software problem

It can be either. Most cases are caused by driver or power settings issues, but hardware faults are also possible.

Will reinstalling Windows fix the problem

In rare cases, yes. But you should try all other fixes first because reinstalling Windows is time-consuming and not always necessary.

Why does the USB device work on another computer

If it works elsewhere, the issue is likely with your computer’s drivers, ports, or settings rather than the device itself.