USB descriptor request failed. Resolving the error "USB device descriptor request failed"

When working with external devices, problems with USB ports often occur when connecting. Windows then displays: “USB device not recognized” or “Invalid device descriptor.” Such notifications do not provide a specific answer to the question of where exactly the problem occurred, so you need to check all possible options.

USB device is not recognized - what to do

The problem must be looked for by elimination:

1. Check the operation of the connected peripherals with other PCs/laptops/tablets.
2. If the connected peripherals work normally, look for a problem in the software or hardware of the PC.

Hardware

Important! Some users were helped by completely de-energizing the PC. To do this, you need to turn off the computer and remove the battery (+3V) from motherboard for a few minutes.

Driver setup

Check settings:

If the OS does not find a driver on the Internet in the “Other Devices” section, you can search manually:

The information we need will be displayed in the VEN (Vendor) and DEV (Device) parameters.

If the peripheral in "USB Controllers" is displayed with a yellow exclamation mark icon:

Important! Some users have found it helpful to remove outdated entries from previously connected equipment. Read about it below.

To delete records of all peripherals connected up to this point:

1. Disconnect all USB peripherals from the computer (except the mouse and keyboard).
2. RMB on Start → Command Prompt (Administrator).
3. Type the command and press Enter: set devmgr_show_nonpresent_devices=1
4. Then type into the command line and press Enter: start devmgmt.msc
5. Computer Management will open. Go to Device Manager → View → Show hidden devices.
   
6. One by one, in all categories, remove translucent icons. Do not remove dark ones.
7. Go to the USB Controllers section and completely remove all USB root hubs. When notified “Delete driver”, put a marker (to erase the installed drivers along with the mentions). Dismiss the "Restart PC" message and remove all USB hubs.
   
8. Restart your PC and wait until the drivers are installed and configured.
9. Then insert an unidentified peripheral into the USB port and check its operation.

Setting up the power supply

The problem is common among laptop users. After connecting the drive via USB 3.0 an error occurs - “ Unknown device" This is due to the power-saving feature of laptops, which turns off power to unused ports during idle periods. To disable the feature, go to:

1. Control Panel → Power Options → Select the scheme your laptop uses → Set up power plan.
   


2. In the “USB Settings” tab → Temporary USB disconnect port, change from “Allowed” to “Prohibited”.
3. Save the changes and connect the peripherals again. If necessary, reboot the system.

Important! After doing all of the above, is the error still there? Dig into the BIOS settings. Help fix the problem: reset BIOS settings default, BIOS firmware to the latest version (see motherboard manufacturer's website), software shutdown / USB connection 2.0 and 3.0 in BIOS settings.

If the advice in the article did not help,... Describe the problem in detail, we will try to figure it out and fix the problem together.

Perhaps, many users have encountered such a problem when, when connecting a Flash drive to a computer connector, the system did not recognize it. The failure can also be characterized as 43 USB error. Let's see what's what!

Removable media has become an integral part of consumer use. Owners of PCs and laptops use them every day for a variety of purposes. But what to do when the next time you connect a flash drive, the request for a USB device descriptor in Windows 10, 8.1 and 8, 7 fails? In fact, there is nothing super complicated here, but first it’s worth understanding the issue that interests us in more detail.

Descriptor is a collection of data about the device. This may include characteristics, various functions, as well as other information according to which Windows of your PC can easily initialize the device if, of course, the appropriate driver is available. If an unknown USB is displayed - the device is not recognized - this only means that the OS is unable to take all the data for the correct operation of the module. At the same time, in the register of failure sources it is worth considering not only purely hardware, but also software factors.

Computer hardware problems

An unknown device is the result of a device descriptor failure that occurred exclusively on physical level when, for example, the contacts of a port or flash drive become oxidized or contaminated. Although sometimes they may stop working altogether. You can often observe a situation where the power consumption of devices connected to the motherboard is too high.

The first thing, of course, is to look at the contacts, and if they are not in order, then clean them. It is also possible that when a flash drive is connected, it does not close tightly in the connector, which prevents it from functioning normally. It would seem like little things, but it’s worth paying attention to them. If you have a regular desktop PC, you can even open the lid of the system unit and vacuum everything inside: a fair amount of dust accumulates inside, so such cleaning will definitely not harm the computer. To clean the connectors themselves, you can use a special device called USB Port Cleaner.

Power Consumption Problems

Oddly enough, but a completely acceptable cause of the problem can be electricity consumption, the threshold of which has become higher than the normal amount. To accurately check this information, go to the system “Device Manager”, which can be opened from the “Control Panel”. You can also quickly call command line using the “Windows + R” button combination, and then enter the command devmgmt.msc in it and press “Enter”. You will see the installed USB controllers, from which you will need to select the line corresponding to the USB root hub.

Now right-click the dialog menu and click on the “Properties” line. On the power tab itself, accordingly, you will need to make sure that the power consumption is in this moment no more than the available value. If there is an excess, turn off all peripheral modules along with the PC. After completing the work, also unplug the power cord from the socket. After this, hold down the power button for a few seconds: this is necessary so that the remaining currents on the motherboard completely disappear.

After turning on the PC again and starting the OS, all previously deactivated devices must be turned on one by one so that you can easily identify the source of the failure.

Checking drivers for device descriptor request failure

It is quite possible that the problem lies in the drivers for the controllers. You can quickly check their current status again in the manager. Thus, when the device is not detected - the descriptor has failed - the drivers should be reinstalled. IN USB registry controllers, you should find all entries that directly relate to the Generic USB Hub, as well as root hubs and other composite devices.

Absolutely everyone needs to perform a driver update operation, which can also be called by opening the context menu. During the installation itself, you set a search on your PC or specify software from the list already installed drivers. But, as a rule, only a single driver that has integration should be reflected in the list.

After updating all drivers, there is a high probability that the problem will disappear. For example, a compatibility problem with Windows 10 for a USB 3.0 device is no longer solved by installing the usual one, functional driver from the local OS database, but by downloading the program from the official website of your electronics manufacturer. It is important to pay special attention to this if you have a laptop.

How to update drivers?

If the above method does not lead to success, and the OS continues to issue a notification that the handle has failed, you can resort to using third-party utilities. Automated algorithms quickly detect missing components software, download them to your PC and install them.

One such solution is free version programs Driver Booster– a link to it is given at the end of the page. Like another one a good option, we bring to your attention DriverPack Solution . Choose any of these applications and update all of your computer’s drivers at once, as well as selected elements. Both utilities access directly the resources of the manufacturers of the particular type of equipment used, after which they download the latest installation packages.

Chipset drivers

As a rule, malfunctions may occur precisely because of an incorrect version of drivers for the PC chipset. It is advisable to check unofficial or outdated software such as Intel Chipset Driver, or Management Engine and ACPI Driver and update it to the latest state. It is especially important to monitor them on Windows 8 and 10. To update, go to the hardware manufacturer’s website and download the latest drivers, having previously specified the OS and its bitness.

By the way, you can update everything using the same utilities that were mentioned just above: DriverPack Solution, as well as Driver Booster (either one at the user’s personal discretion) will cope with this task perfectly.

Setting Energy Saver

We also advise you to pay attention to the power saving scheme, which can be configured differently in each operating system. So, with some settings, in order to save electricity, the computer’s USB ports will be disabled, which, accordingly, will not allow you to normally connect any device to the connector.

“Device Manager” will again help us eliminate this unpleasant factor. We go into it, as we already did at the point where we tried to update the drivers, and open the “Properties” menu. In this case, you should already open the power management settings. You will see a line where you can set permission to turn off devices to save battery - uncheck the corresponding box.

It goes without saying that this procedure is done for all components, including the Generic USB Hub, as well as root hubs and other component devices that can affect the functioning of the ports. It is likely that after changing the settings and restarting the computer, everything will function normally, and the user will no longer encounter the problem.

Finally

If you want to quickly find exactly those drivers that perfectly integrate with your device, and not install one of the versions compatible with the equipment, then it is advisable to search for software not by its name, but by two parameters - VEN and DEV. They can also be viewed through the “Device Manager” menu by going to the details tab via ID.

Overall, this was all the information you need to know in case the USB system request fails. Be sure to share information Hide-Info with your friends and tell us which method helped you. Write reviews and rate! Thank you!

Why does the "USB Device Descriptor Request Failed" error occur?

In general, the situation when an error message appears when inserting a flash drive into a USB port is not at all unique. The user is given a message stating that “unknown USB device”. This problem is called USB Device Descriptor Request Failure. When you first install a flash drive into a USB port, automatic search the necessary drivers, after which the device is recognized by the computer within a few seconds. If the system cannot find the necessary drivers automatically, an error message is displayed. “Device descriptor request failed” or error code 43 indicates that the problem is in the OS software. How to deal with such a situation and what you need to know in order to cope with the error that has arisen on your own, we will learn from today’s episode.

The main causes of the error “USB device descriptor request failed on Windows 10”

The USB device descriptor request failure error can occur not only due to an OS failure, but also as a result of damage to the USB input or the flash drive itself. Experts report that the causes of error code 43 are the following factors:

— Malfunction of the USB device or computer connector. Chinese-quality flash drives, which are underpriced, often fail.

— The virus that contributed to the failure system files.

— The registry is damaged, which could have occurred as a result of installing or updating the operating system.

— Aging of drivers, as well as their damage or conflict situations.

There are more than enough reasons for the occurrence of the error in question. To eliminate it, you need to determine the source of the error and take appropriate action.

How to troubleshoot the error “USB device descriptor request failed” and ways to solve the problem with error “code 43”.

Sometimes, to resolve the error, it is enough to simply clean the USB port so that the computer recognizes the flash drive. In each specific case, the solution to the problem must be approached individually. If the flash drive is not detected by the computer in one port, then you should plug it into another USB connector of your computer or laptop.

I Equipment check

The first step in troubleshooting is to check the physical condition of the USB device, as well as its contacts and cable. Finding such a fault is not difficult on a computer, but with a laptop the situation is more complicated. The check is carried out by removing the cover from the system unit and conducting a visual inspection.

Plugs or connectors may become dirty, dusty, or oxidized, causing poor contact. Fault checking should begin exclusively at the physical level. The procedure at the physical level includes the following manipulations:

1. Cleaning contacts.

2. Connecting ports to other connectors.

3. Check ports on another computer.

Only after a check has been carried out at the physical level and it has been determined that the USB ports are in working order, you can resort to a research procedure at the software level. If Windows 10 OS again does not read the data, giving the same error with code 43, then you should check the status of the drivers. Let's look at how to check the status of drivers on Windows 10 in detail.

II Checking the status of drivers and updating them

1. Often the cause of the “USB device descriptor request failure” error is a driver violation. The second step towards fixing the problem begins with the need to update the Windows 10 OS drivers. Not many people know how to do this. The procedure is performed by performing the following manipulations:

Open "Device Manager" through "Start" and "Control Panel".

2. In the “Device Manager” window that opens, you need to find the section called “USB Controllers”. The “Device Manager” section displays a list of all equipment connected to the computer.

3. In the “USB Controllers” list, you need to find the “GenericUSBHub” item, as well as “USB Root Hub” and “Composite USB Device”. A number of certain manipulations should be carried out with each of these devices. They include carrying out the driver update procedure. To do this, on each element, right-click to open a submenu, and then select “Update drivers”.

4. After this, a window will open asking you to choose one of two options: “automatically search for updated drivers” or “Search on this computer.”

You need to select the second option, as shown in the screenshot above. After this, a window will open in which you need to click the “Next” button.

5. After this it will begin manual search drivers. If the drivers need updating, the system will display a corresponding message. This will begin updating them, and after the installation is complete, the system will have to detect an unidentified USB device.

Rarely, the system cannot find the drivers on its own, so the problem can be resolved by downloading them from the official website. The above steps should be carried out for each item, and then check the serviceability of the USB device.

This is interesting! If you decide to download drivers manually, you should download them exclusively from the official Windows website. Downloading drivers from unverified resources may result in your computer becoming infected with viruses.

III Check for Power Consumption and Relieve Static Voltage

If the drivers are updated or do not require this procedure, then you can fix the “USB device descriptor request failure” error by checking the power consumption of the USB ports. To check the power consumption of USB ports, you should perform the following steps:

Open the “Power” tab, in which select the “USB Root Hub” section. In this section, you should make sure that the power consumption does not exceed the permissible parameters.

To enter the USB Root Hub section, you need to open Device Manager.

In this section, go to any equipment in the “USB Controllers” section, then right-click to open a submenu.

In this submenu, select the “Properties” item, after which the “Power Management” tab opens.

In this tab, uncheck the box next to “Allow the computer to turn off this device to save power.” After this, it is recommended to restart the computer and check that there is no error when inserting the flash drive into the USB port.

To relieve the static (residual) voltage that remains on the USB ports when you remove the flash drive in an unsafe way, you need to perform the following manipulations:

— Turn off your computer or laptop. After turning off the laptop, you need to remove the battery, and from the PC, unplug its plug from the socket.

— Now you need to press the power button and hold it for a few minutes.

— After keeping your device de-energized for 1 minute, you can start it.

- After this, the proper functioning of the ports is checked, as well as the disappearance of the “code 43” error.

— After performing such actions, the error should be eliminated.

What to do if the problem persists...?

What should you do if the problem with starting the flash drive still persists after the above steps? There are a number of other actions that will help solve the problem, but they should only be performed in the presence of an experienced computer technician.

— Reset BIOS settings. If you reset the settings in BIOS incorrectly, the consequences can be fatal, so it is better to entrust the procedure to an experienced specialist.

— Updating or reinstalling Windows 10 OS. Even a beginner can do this if you follow the appropriate instructions.

— If the above steps did not help fix the problem, then there is only one way left - replacing the USB ports.

Concluding today's post - USB device descriptor request failure, it can be noted that any problem can be solved if you find the right approach to fix it. You always need to start by looking for reasons, so go for it, because now the instructions are in your hands.

When connected to your computer or laptop mobile phone, flash drives, external hard disk, printer, scanner or any other device via the universal serial bus, you may encounter a very common error - USB device not recognized with the comment “One of the devices connected to this computer is not working correctly or cannot be detected.” It is found both in Windows 7 and on the most modern version of the Microsoft operating system - Windows 10. It looks like this:

In English versions this is the “USB Device Not Recognized” error:

Why this error appears and what ways there are to fix and eliminate it - we’ll talk today.

Reason 1. Cables, extension cords and hubs

Poor quality of cheap USB cables, adapters and splitters (aka “hubs”) are the most common source of various problems for devices connected via a universal bus. Therefore, when the error “USB device not recognized” appears, the first thing you should try is to exclude the intermediate link in the video of the extender or hub. That is, we connect a flash drive, 3G/4G modem and similar things directly to the USB port on the computer’s motherboard. The front connectors on the system unit case are also not suitable because they are also often the cause of malfunctions, which means you shouldn’t “trust” them.

In the case of a printer or scanner, pay attention to the integrity of the cable. If there is visible damage, use a different cable. It is inexpensive and will not stretch your budget at all.

Reason 2: Faulty USB port

The second very common cause of problems with work external devices- physical damage or even breakdown of the USB port. It’s a paradox, but often people who wash themselves two or three times a day do not at all monitor the cleanliness of the equipment with which they interact every day. They especially suffer from this system units. They often like to be “pushed” into the dustiest and dirtiest corner. As a result, dust gets into everything possible places, including USB ports. I even happened to discover mummies of various beetles and insects there. And dirty contacts also do not contribute to stable operation of the connector. In addition, there were cases when users plugged in a mouse, printer or flash drive so zealously that they simply broke the port.

Therefore, if the error “One of the devices connected to this computer is not working correctly” appears, carefully inspect the connectors for dirty contacts or damage. Try switching to the neighboring one and see if there are any errors on it. In addition, it’s worth opening Device Manager and looking at the USB controllers to see if any of them have a red cross. This usually means that it has failed and the motherboard needs to be repaired. Sometimes, however, installing an additional controller in a PCI slot helps.

Reason 3. Drivers and software failure

Problems when installing a driver for a particular gadget is another possible reasons emergence Windows errors"USB device not recognized." If you open Device Manager, then in the list that appears you will see a yellow triangular icon in the list of controllers.

In this case, it will be signed as “Unknown USB device (enumeration failure)”. This may happen because the operating system cannot find suitable drivers (for example, when upgrading the OS to Windows 10), or a conflict arises between already installed and new ones. To correct the situation, you must first find it on the Internet latest version drivers for the connected device, download and try to install.

If you don’t know what to look for specifically, then go to the device properties, open the “Details” tab and select the “Hardware ID” property from the list.

Identification lines will appear in the field below. We find two identifiers in them - VID And PID. We remember or write them down. We go to the Internet (for example, to the site pcidatabase.com) and look for detailed information about connected removable disk, phone, mouse, printer, scanner, etc. And then you need to search and install current version drivers.

But if you think that the “USB device is not recognized” error is due to a possible conflict between old and new drivers, then to eliminate it you will have to completely remove both. This is done either again through the Device Manager, or using third-party utilities. After you clean the system of faulty software, you will need to install the latest version and check the operation of the device.

Reason 4. Malfunction of the device itself

Yes, unfortunately, such troubles happen. This happens especially often with flash drives and external hard drives. Their controller either completely fails, or the area on which the microprogram for the chip is written is faulty. It cannot boot and therefore the computer does not understand what it is and labels it as “Unknown USB device”.
Check it works on another computer. If the same error appears there, then take it to a service center or to the trash. For example, it crashed for me this way wireless mouse. On another PC it worked without problems. Most likely there was a conflict between her radio module and something else in the room.
Sometimes a malfunction may occur due to insufficient power. This happens with external hard HDD drives. In this case, they must be connected not through one, but through two ports at once. There is a special cable included for this purpose.

Note: If, when you turn on various equipment or gadgets via USB, your computer or laptop begins to behave strangely: it turns off, reboots or freezes, then immediately unplug it and take it to a service center. As a rule, this indicates a malfunction of the connected device itself and further self-diagnosis can lead to even more dire consequences.

Probably, many users have encountered a problem when you insert a regular flash drive into a port, and the system, instead of recognizing it, displays the message “Unknown USB device (device descriptor request failed).” What this problem is connected with and how to solve it will now be considered.

USB device descriptor request failure: the essence of the problem

Let's start with the fact that a descriptor in the simplest sense is a kind of description of a device and its characteristics, roughly speaking, data by which, if there is an appropriate driver, the operating system can initialize it.

If for some reason a message is displayed stating that the device descriptor request failed (error code 43 “Device not recognized”), this only indicates that the system is unable to obtain the necessary data about the basic rules established for correct operation . In this case, both software and hardware problems can be the source of the failure.

Physical hardware problems

In the case when a device descriptor failure occurs exclusively at the physical level, the reasons may be, for example, oxidized contacts of a flash drive or port, non-working USB ports, bad or dirty contacts, etc. A situation with excessive power consumption of devices is often observed, connected to the motherboard.

The first thing you need to do to make the device work is simply check the contacts or clean them. Maybe when connecting the same flash drive to a USB port, there was a loose contact between the contacts. In any case, such seemingly trifles are worth paying attention to. In the case of stationary PCs, you can try opening the lid and cleaning the insides with a vacuum cleaner (a lot of dust accumulates there). To clean ports, you can use a special USB Port Cleaner device.

Analysis of peripheral power consumption and static electricity problems

One of the reasons that the system displays a message that the USB device descriptor request has failed may be that the power consumption exceeds the nominal value.

To check this information, first you need to go to the “Device Manager”, which can be called either through the “Control Panel” or by command devmgmt.msc in the “Run” console (Win + R), and find the installed USB controllers there, and in section itself, select the item corresponding to the USB root hub.

If there is an excess, you should completely turn off everything along with the computer and unplug the cord from the outlet, then press the power button for a few seconds so that the residual currents disappear from the motherboard. After turning on and rebooting the operating system, the disabled devices should be connected one by one to find the source of the failure.

Unknown USB Device (Device Descriptor Request Failed): Check Drivers

If everything is fine with power consumption, the problem may be with the controller drivers.

You can check their status in the same “Device Manager”. If the device is not detected (the descriptor fails), the drivers will have to be reinstalled. In the list of USB controllers, you should find all entries related to Generic USB Hub, root hubs, and composite devices.

For each of them, you need to perform a driver update operation called from the right-click menu, and during installation, either search for local computer, or select a driver from the list of installed ones. Typically, only one compatible driver will be listed.

After reinstalling the drivers for all devices, the problem has a good chance of disappearing. Windows 10 compatibility issue for USB 3.0 devices is not solved by installing standard driver from the system’s own database, and downloaded from the manufacturer’s official website computer equipment. In particular, this problem affects most laptops.

How to install, reinstall or update the necessary drivers using third-party programs?

If the above described method did not help, and the system with enviable persistence displays a message that, for example, the BOS USB (mouse) descriptor request failed, again and again, you can do otherwise by using automated utilities to update drivers.

One of these is the well-known free Driver program Booster. It allows you to update drivers for absolutely all components of a computer system or perform a selective update, turning directly to the resources of manufacturers of equipment of one type or another.

Problems with chipset drivers

Another reason that the USB device descriptor request fails is that the chipset has unofficial Driver, ACPI Driver, Intel Management Engine Interface, etc., which are not recognized by the system. This applies to a greater extent to operating Windows systems 8 and 10.

The way out of this situation is obvious: you just need to go to the manufacturer’s website and find the appropriate drivers for your equipment and OS version, taking into account the bit depth, or, again, use the Driver Booster application.

Troubleshoot problems by adjusting power saving settings

Finally, another situation where the system reports that a USB device descriptor request has failed is when the power-saving scheme allows unused USB ports to be disabled.

To fix the problem, you need to use the same “Device Manager” and, as was shown in the driver installation section, enter the properties menu. But only in this case the power management tab is selected. Here you just need to uncheck the box that allows you to turn off the device in order to save money. Again, this procedure is done for all components, including the Generic USB Hub, root hubs, and composite devices. It is very likely that after saving the changes, the problematic USB device will start working normally.

And finally

It remains to add that it is best to search for drivers even on the equipment manufacturer’s website not by name, but by two parameters - DEV and VEN. They can be viewed in the device properties window in the “Device Manager” on the details tab, where the Hardware ID parameter is selected from the drop-down list. These two characteristics will help you make an accurate search, and not look only for compatible drivers, which may not work correctly after installation.

In some cases, when viewing information and driver files on the corresponding tab, it may help to roll back the driver or remove it, after which the system will reinitialize the hardware as unknown, and then install the most suitable driver. But it's better to download it directly. If the downloaded file is in INF format, you can try right-clicking context menu and select the installation line. If this option does not work (which most often happens), when installing or updating the driver using the system, you should use the installation from the specified location (in the corresponding field, use the browse button to select the location of the downloaded file).