Kamstrup A/s USB Devices Driver Download

The Unknown USB device (device descriptor request failed) in Windows Device Manager on HP and Lenovo would stop your USB devices like an Android mobile, flash drive or pen drive from being properly detected for use in Windows 10, 8 or 7, but we finally resolved the USB not recognized problem for you. In case any USB malfunction could endanger data, let EaseUS Data Recovery Wizard recover data from the inaccessible USB drive.

Unknown USB Device (Device Descriptor Request Failed) is a Windows Device Manager error under the 'Universal Serial Bus controllers' section. The current device status is demonstrated as 'Windows has stopped this device because it has reported problems. (Code 43). A request for the USB device descriptor failed.'

What Is a Device Descriptor?

Trusted Windows (PC) download Kamstrup USB Meter Reader 1.5. Virus-free and 100% clean download. Get Kamstrup USB Meter Reader alternative downloads. This page is about the Linux driver for the USB-connected devices that have the USBAT-02 processor from SCM Microsystems. The processor identifies itself with the numbers 0x04e6 and 0x1010). SCM provided us some specifications of the device (under non-disclosure).

The device descriptor (USB_DEVICE_DESCRIPTOR) is the root of the descriptor tree and contains basic device information. idVendor and idProduct of which are the unique members for the Windows operating system to identify the connected device and determine which device driver must be loaded.

Anyway, we don't care about the tech-savvy's jargon, but only get to know - how do I fix the device descriptor when the request failed?

How Do I Fix Device Descriptor Request Failed?

Driver issues take the most responsibility for an unknown USB device on HP, Lenovo, Dell, and many computers. As you've concerned, the device descriptor request failed error is a generic unknown USB problem, so it's reasonable to suspect a driver issue at present. The USB device here mentioned can be a flash drive, pen drive, Android, digital camera, and any digital gadget that is supposed to use on a Windows machine.

In the next part, we mainly show you the common troubleshooting methods for the device descriptor request failed error in Windows 10. As a matter of fact, Windows 7 and Windows XP users are also having the same problem. Never mind applying the solutions to your own Windows operating system. They're all-OS-versions compatible.

3 Quick Fixes to Unknown USB Device (Device Descriptor Request Failed) in Windows 10

In case that unknown USB device (device descriptor request failed) error happens because the USB port is not working or USB device is damaged, the following three fixes are significant to try before going to further troubleshooting.

  1. 1. Try plugging in a working USB drive to check whether the USB port is working or damaged.
  2. 2. Plug your USB into a different PC to check whether the USB drive is working or damaged.
  3. 3. Check if the USB device shows up in Disk Management. As long as the data matters, download EaseUS free data recovery software to recover data from the inaccessible USB device in advance.

Step 1. Run USB data recovery software.


Connect the USB flash drive to your computer and launch EaseUS USB data recovery software on your PC. Select your USB drive which marks as a removable disk, and click 'Scan' to start finding your lost files.

Step 2. Scan all lost files from USB.

EaseUS Data Recovery Wizard will thoroughly scan your USB flash drive and find all your lost data on it. After the scanning process, use the Filter feature to filter a specific file type. You can check and preview found USB files in this program.

Step 3. Restore all lost files from USB.

A double-click will allow you to preview the file results. Choose the target files and click 'Recover' to save them to a secure location on your PC or other external storage devices.

5 Advanced Fixes to Unknown USB Device (Device Descriptor Request Failed) in Windows 10

Due to the uncertainty of the exact factor that causes your USB drive malfunctioning in this way, the demonstrated solutions are not all supposed to take effect. Hence, take some patience to implement each solution until the problem solved.

1. Use Hardware and Devices troubleshooter

Kamstrup A/s Usb Devices Driver Download Windows 10

  • Press Win+R, type Control Panel and hit Enter.
  • Inside Control Panel in the search box type troubleshooter and select Troubleshooting.
  • After that select Configure a device under Hardware and Sound and follow the on-screen instruction.
  • Click on Apply this fix if any problem is found.

If the unknown USB device error is triggered by hardware issues, it will no longer appear after you try the above steps. If not, you need to move on to the next method to find a fix.

2. Try to Uninstall USB Drivers

  • Open Device Manager (Right Click on Windows Logo and Click Device Manager).
  • Now find and expand Universal Serial Bus controllers. Now right-click on USB drivers and click Uninstall. Do for all USB drivers one by one.
  • Restart your PC then Windows will reinstall the device automatically.

Some people would find that uninstalling and reinstalling the driver only works once. The next time they plug in the drive, and the device descriptor request failed appears again. According to an experienced user who has been suffering the problem for long but finally found the cause of why this method does not work and how to make it work.

I found that going into Device Manager and 'Uninstalling the device', and then plugging in the USB I had been using at the time, before telling Device Manager to scan for hardware changes in the USB ports fixed this problem. I think it was because I've had this USB receiver for a mouse plugged into it for so long, that when I removed it from the port, the computer didn't recognize that it'd been removed and got caught in a loop trying to identify a device that wasn't there anymore, locking the USB port down. Works fine now.

3. Disable Fast Startup

  • Press Win+R, type Control Panel and hit Enter.
  • Click on Power Options and select Choose what the power buttons do in the left pane.
  • Click on Change settings that are currently unavailable.
  • Under Shutdown settings, uncheck the box next to Turn on fast startup (recommended). Then click on the Save changes button.

What Is A Usb Devices

4. Turn on Plug and Play in Windows Services

  • Press Win+R, type services.msc and hit Enter.
  • In Windows Services, find the name Plug and Play. Double-click on it to open the Properties window.
  • If the Startup type is currently Manual and the Service status is Running, try to turn it to Disabled and Stopped, save the changes; later change the Disabled and Stopped to Manual and Running again. Click OK and Apply.
  • If the Startup type is currently Disabled and the Service status is Stopped, switch to Manual and Running. Click OK and Apply.

Kamstrup A/s Usb Devices Driver Download 64-bit

Restart your PC and see if the unknown USB device problem has been resolved in Windows 10. if it doesn't work, try to perform a system restore to get rid of this issue.

5. Restore Your PC To Previous Recovery Points

Kamstrup A/s Usb Devices Driver Download Free

  • Press Win+R, type Control Panel and hit enter.
  • Now find and open the Recovery option.
  • Select System Restore, follow the on-screen guide and wait until all the recovery points are shown.
  • Restore your PC from the right recovery point.

Examples Of Usb Devices

  • Daniel Drake.
    (dsd at gentoo. org)
    Gentoo developer. One of his projects is to get the driver ready for inclusion in the 2.6 kernel.
  • Matthew Dharm.
    Maintainer of the usb-storage driver of the Linux kernel. He contacted SCM for the specifications. He delegated the development of the driver and is hoping to hear back from us when we are ready ;-)
  • Thomas Kreiling.
    Developer of the original 2.4 driver
  • Don Lin.
    (dong at research. bell-labs. com)
    Ported the driver to FreeBSD. Did some cleaning up of the code on the fly. Shared the resulting freebsd code with us.
  • Chris Niekel. (Netherlands)
    Has been very active though he had not that much time. He moved the usbat-02 project to sourceforge (which was a good thing :-)).
  • Mike Gibson. (U.S.A.)
    (gibson at cs. utah. edu)
    If you want to contribute, contact Mike, he can provide you with some information from SCM.
  • Hans Persson. (Sweden)
    Hans has made the original home page (before we moved to sourceforge) and has setup a mailing list.
  • Herald van der Breggen. (Netherlands)
    (usbat2 at breggen. xs4all. nl.)
    Herald was one of the first people who tried to write some useful lines to make a working driver, but was not very successful with that. Anyway, he made the home page at least... ;-)
  • Geoff 'Frodg' Patton.
    Geoff got Daniel interested in developing the driver and contributed lots of testing time and debugging reports.
  • Martin Emrich.
    Mikkel 'Kamstrup' Erlandsen.
    Steven J. Hill.
    Jon Lapham.
    Lindsay Haisley.
    Glyn Tebbutt.
    Kurt Wall.
    Ron ?.
    Spent time testing the 2.6 development releases + provided valuable feedback and debugging reports.