How To

[Fixed] Device Descriptor Request Failed Error

Sometimes when you plug a USB drive into your Windows 10 PC,  appears a Device Descriptor Request Failed error, it doesn’t get access and it shows that your USB device is malfunctioned with an error message “The last USB device you connected to this computer malfunctioned, and Windows does not recognize it.”.

If you search in Device manager to fix the problem, you will see that your device is named as an Unknown USB Device (Device Descriptor Request Failed). Due to this, your external USB device is not recognized by your Windows, and meet Unknown USB Device (Device Descriptor Request Failed) error in Device Manager.

So in this article, we are going to talk about this error and we will show you methods to solve this error in your Pc. Let us first see what causes this error on your Pc and then we will talk about solving this error. So let us start:-


What Causes The Device Descriptor Request Failed Error?

Device Descriptor Request Failed Error can occur due to any of the following situations:

  • Malfunctioning of hardware might be the cause.
  • The currently loaded USB driver has become corrupt or unstable.
  • Your drivers can be outdated.
  • Maybe your computer requires an update on issues that were creating the problem with an external USB hard drive and Windows.
  • Maybe your Windows is missing some important hardware or software updates.
  • Your USB controller can be corrupt or unstable.
  • Maybe your external drive entering selective suspend.
  • Your computer motherboard might require updated drivers.

Fixing “Device Descriptor Request Failed” Error

First, you should check if the error is caused by a faulty USB driver or port so do the following:

  • Try connecting the device to a different USB port.
  • Connect the device to another PC.

Then you can try the following:

  • Remove the Power Supply
  • Disable Fast Start-up
  • Uninstall all the Unknown USB Drivers
  • Change the USB Selective Suspend Settings

Removing the Power Supply

One more solution to this error can be by simply rebooting your system by unplugging the Power Supply. This method will fix the problem if the problem is caused by Power Supply.

Step 1:- Remove the Power Supply plug from PC.

Step 2:- Restart the PC and connect the device to the USB port.

Step 3:- After that, plug in the Power Supply.

After reboot check, if the error device descriptor request failed error is solved or not. If not, move on to the next step to solve it.

Disable Fast Start-up

Fast start-up is a feature of Windows 10 which hibernates and then shutdown your Pc. By doing this your system restarts fast. USB device not recognized device descriptor request failed error can be solved by disabling it. You can disable this feature by following given steps:

Step 1:- Hold Windows key + r to open Run Command

Step 2:- Type “Control” and hit the OK button.

Step 3:- Locate Power options in the control panel, click on it to open it.

Step 4:- In the left side of the panel, you will see an option Choose what the power buttons do, select this.

Step 5:- Click – “Change settings that are currently unavailable”.

Step 6:- Lastly, uncheck the box of Turn on fast startup (recommended), you can find it in the Shutdown settings option.

Step 7:- Click on Save changes to save all the changes that you have made.

Step 8:- Simply restart your system.

After reboot check, if the error device descriptor request failed error is solved or not. If not, move on to the next step to solve it.


By Uninstalling all the Unknown USB Drivers

The problem of unknown USB device descriptor request failed might be occurring because of the Unknown USB drivers installed on your system. So either you can uninstall them or change them. We recommend uninstalling any unknown USB drivers present on your Computer. To uninstall them follow the steps:

Check this post: 10 Best Driver Updater Software

Step 1:- Open Run dialogue box on your device.

Step 2:- In the Run dialogue box type “devmgmt.msc”, and click on OK button.

Step 3:- Just click on the Universal Serial Bus controller’s option.

Step 4:- Now attach your USB to a system that is not recognized.

Step 5:- After connecting the device, a Universal serial bus controller list, unknown USB device option with a yellow sign will be displayed on your screen.

Step 6:- Now to uninstall, right-click on it and select the Uninstall option.

Step 7:- After the uninstallation process completed, restart your system.

After reboot, connect your device again to the system and see the unknown USB device Windows 7 error is gone and now you can do you work without any issue.


Change the USB Selective Suspend Settings

By changing the USB Selective Suspend setting can also help to recognize the USB on your computer. Since due to some unwanted changes this setting suspends your USB even before recognizing it. To stop it from doing so follow the steps given below:-

Step 1:- In Power Options, click on Show additional plans. (If you tried Method 2, you must know how to go to Power Options. If not, go back to Method 2 and refer the steps to open Power Options.)

Step 2:- Click Change settings that are currently unavailable.

Step 3:- Select High performance and click on Change plan settings.

Step 4:- Click on Change advanced power settings.

Step 5:- Click on Change settings that are currently unavailable.

Step 6:- Locate USB settings and expand it.

Step 7:- Expand USB selective suspend setting. Disable both On battery and Plugged in settings.

Step 8:- Click the Apply button and restart your computer.

After reboot, connect your device again to the system and see the unknown USB device Windows 7 error is gone and now you can do you work without any issue.


So that’s all for this article. We believe that you can now easily solve the error if it is occurring on your Pc. If you have any query or confusion in any part of this article. You can directly ask us in the comments section below. We will be more than happy to assist you there.


What Is Device Descriptor Request Failed?

Device Descriptor Request Failed means that your USB device is not being recognized by your PC or Windows computer.

What is a device descriptor?

The device descriptor has the basic device information of a connected USB device.

What does code 43 mean?

The code 43 error is when the Device Manager stops a hardware device. Often times because Windows has reported some sort of problem.

How do I identify an unknown USB device?

Open up a “Run Dialog Box” and type in devmgmt.msc and press “Ok”. Then locate the device you are trying to identify. Select details tap, as well as the Hardware ID information in the Property selection list. Additionally, locate the device Vendor ID and Product ID. After that, you can have the USB Device information be displayed in the Value List.

Can you fix a malfunctioned USB?

You can fix a USB device that had malfunctioned. All in all, you simply have to reinstall the USB device drivers.

How do I fix an unknown device on Windows 10?

Open Device Manager and right-click unknown device. Then you can select Update Driver from the context menu. Choose the “Search automatically for updated driver software.”

How do I fix a failed port reset?

First, open your Device Manager. Second, expand the category Universal Serial Bus Controllers. Thirdly, right-click on Unknown USB Device, as well as clicking Uninstall to remove the device properly. Finally, restart your PC or Windows computer and your device should automatically reinstall.

About the author

Jeff Peterson

Jeff is a tech geek whose hobby is to learn about the latest developments in the tech world. When he is not writing at you may find him coding or playing his favorite video games