Those who don’t know – ‘USB Device Descriptor’ is used to store information for USB drives. Basically, when you connect a USB device to your Windows 10 PC then, the USB device descriptor helps your system to recognize the connected device and also to determine which USB driver to load.
But, when this USB device descriptor malfunctions and unable to work properly on your Windows 10 PC then, unfortunately your system won’t be able to recognize any connected USB device and in turn, you’ll receive either of the following error messages—
All these messages indicate this “Unknown USB Device (Device Descriptor Request Failed)” particular error. It’s the most common error that shows up in the Device Manager of Windows 10 system.
So, if you also have recently experienced this particular error and are wondering “What Causes Unknown USB Device Descriptor Request Failed?” and “How to Fix Device Descriptors (Unknown USB Device) Request Failed?” error, then read out this entire post.
Here, you’ll understand why the unknown USB device error on Windows 10 occurs, as well as learn about the couple of methods to fix this encountered issue completely!
So, let’s get started—
Generally, the “Unknown USB Device (Device Descriptor Request Failed)” error occurs either due to system-specific or due to some hardware related issues.
So, as you never know, maybe you’re facing this issue of ‘Not able to use your USB device on Windows 10’ due to a “Hardware” issue therefore, your first step would be to check whether the problem lies with the operating system or within your respective computer device itself.
By doing so, you’ll be able to ensure whether you need to try restoring your computer device or you’ve to proceed with the below-listed methods to fix the system-originated issues!
However, if you’re wondering how you can check for any hardware issue then, let’s tell you, the two viable ways to check about the same are as follows—
You can use the other rear USB ports to connect your USB device and after getting connected, if it suddenly starts working then, you can predict that the USB port that you originally used is most likely broken.
Upon finding out that, what you can do is mark your originally used USB port as “Not functioning” and then, you can straightway look for its replacement.
As per this way, you can consider using the same hardware (USB Device) on another computer. There, if the hardware works smoothly and you won’t encounter any issue related to the same then, it simply means the issue is within your old system and needs to be fixed.
So, basically with the help of these two given ways, you can easily make a decision whether you need to move ahead and fix the encountered issue with this troubleshooting guide or you need not have to!
[Note: Right before you start the below-discussed troubleshooting actions, verify whether your USB drive contains some important data or not. If yes, then, it is recommended that you apply the data recovery of the same so that you won’t lose any of your data in fixing the encountered error.]
Well, sometimes this simple way out of temporarily plugging out the power supply from your laptop or any portable device you’re using and then re-connecting the USB device (that is showing errors) – may be able to help you get rid of the encountered Unknown USB device issue on Windows 10 error.
[Note: You must attempt this method only when you’re using a portable device, for instance, a laptop.]
In a more precise manner, what you can do is consider disconnecting all the charging cable cords from your respective laptop. And, in the meantime, until it’s running on its integral battery only; you can plug out and plug in the USB device back on the same spot to check if your system is now able to recognize it or not!
If your system is able to recognize the USB device then, it means you can fix the USB device error that you’re encountering by simply replacing your charger.
However, in the opposite case, you can just eliminate the power supply as a cause and try-out the next given method.
You can simply ‘Remove USB’ from your Windows 10 PC and then, ‘Scan’ it for any hardware changes. To do so, consider executing these following steps—
Now, you can plug in your USB back to your Windows 10 PC and check whether it’s able to recognize the connected USB device or not!
Next, if you’re using an outdated or corrupted USB driver, then no wonder why you’re receiving this error. Faulty USB Driver is considered as one of the possible culprits behind the ‘USB\Device_Descriptor_Failure’ issue.
So, having that in mind, you can try to resolve the same by simply ‘Uninstalling’ the unknown USB device (Device Descriptor Failure) drivers in Device Manager and then, reinstalling it via these steps—
[Note: If Windows O.S. can’t automatically reinstall the drivers correctly, then consider downloading (from the USB drive’s manufacturer site) and installing the latest drivers manually on your system.]
This way, most probably you’ll be able to get rid of the discussed unknown USB device error that you’ve been receiving!
According to this method, if a USB drive/disk carries a lot of bad sectors (that can’t be read or written) then, you have to either repair your USB drive or consider replacing it with a new one.
Out of these two options, if you choose the former one then, in order to repair the malfunctioned USB drive what you’ve to do is first download a software like ‘DiskGenius.’ And, after that, execute the below-given steps to clear all the bad sectors that your respective USB drive contains—
[Note: Right before executing the repairing process, it is important to note that clearing bad sectors may damage your data as well. So, it is recommended that you must perform a backup of your data in advance.]
However, as not everyone is able to successfully back up their data and instead lose it in the process of repairing bad sectors from their USB drive so, bearing that in mind, we’ve also mentioned the steps of retrieving lost data from the damaged USB flash drive. Have a look—
So, this way you’ll be able to repair all the bad sector areas that your damaged/ malfunctioned USB drive contains and at the same time will also be able to retrieve your data that you might have lost in the repairing process.
If you’re still not able to fix “Device Descriptor (Unknown USB Device) Request Failed Error” then, what next you can consider doing is ‘Disable your Windows 10 Fast Startup’ option. It’s a feature related to the shut-down and hibernate function of a PC.
Although it’s designed in such a way that it can make your computer boot faster, once in a while it works at such a speed that Windows 10 fails to detect the connected USB device and you end up encountering ‘USB device descriptor failure’ error.
So, having that in mind, you should disable the Fast Startup feature via with the help of these below-given steps—
Now, quickly restart your Windows 10 PC to see whether the discussed issue that you’re encountering gets resolved or not yet!
Another effective way to get rid of the error is to update the USB driver. Well, because you might be experiencing the unknown USB Device request failure for unknowingly using outdated or corrupted USB drivers.
So, consider updating the ‘Generic USB Hub Drivers’ and if you don’t know how to do so then, have a look at these steps—
Now, wait until the update gets complete and once it’s done, plug-in your USB device to check whether it starts working or not! If not, move onto the next method!
If, anyhow, the USB selective suspend setting is enabled on your Windows operating system then, the same will put the USB port in low-power mode leading to ‘USB device_descriptor_failure problem’ while you connect the USB drive to the port.
Therefore, this effective method suggests you to disable the USB Selective Suspend Setting in your Windows 10 PC to solve the encountered error.
For that, here are the steps you need to perform—
Last but not the least, if nothing helps, you can consider ‘Windows Troubleshooter’ for help. It’s an in-built Windows 10 tool that’s designed to help you find out and fix a lot of system-related issues.
So, simply execute these below-given steps to use Windows 10 Troubleshooter tool for resolving the encountered ‘Unknown USB Device Error’—
And, when this process gets complete, you have to close the ‘Troubleshooter’ and ‘Restart’ your computer to ensure whether the “Unknown USB Device (Device Descriptor Request Failed) in Windows 10” error has now been resolved or not!
That is all! These aforementioned 8 methods are the most effective solutions for the unknown USB device (Device Descriptor Request Failed) error. So, hopefully trying them will help you in troubleshooting this encountered error without the requirement of any further assistance.
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