Windows 8 and 8.1 Forums


USB2 Error 43 on Windows 8.1

  1. #1


    UK
    Posts : 11
    Windows 8.1

    USB2 Error 43 on Windows 8.1


    Since upgrading to Windows 8.1, something weird has been happening. Each time I plug in a USB2 device into the USB3 port on my Asus T100 tablet/laptop (Atom processor, 2Gb RAM and 32Gb SSD), it fails to recognise the device and then throws an Error 43 and complains that the device did not provide a suitable descriptor.

    Initially I thought it was a Hardware issue. USB3 devices in the same USB port worked correctly, so I figured it might be bent contacts. However, adding a USB3 hub with USB3 devices chained from it worked, but USB2 still did not work. I therefore suspect a configuration or driver issue, but I cannot figure out how to fix it. The following link seems to cover it

    How to Fix Windows 8.1 USB Code 43 Error

    but I cannot figure out exactly what the fix is.

    I have tried ever "re-install" style reset of Windows. It doesn't have any restore points to reset to.... so any suggestions gratefully received.

    Thanks in advance.

      My System SpecsSystem Spec

  2. #2


    Canada
    Posts : 1,950
    windows 8.1 Update 1 Pro 64bit


    This may be a driver issue.

    In Device Manager, expand the Universal Serial Bus Controller and uninstall all the drivers, one by one if need be.

    Reboot the system and Windows will scan automatically for hardware changes and reinstall hopefully the right the drivers.
      My System SpecsSystem Spec

  3. #3


    UK
    Posts : 11
    Windows 8.1


    Thanks for the reply.

    I have three options.


    • Intel (R) USB 3.0 eXtensible Host Controller - 0100 (Microsoft)
    • USB Composite Device
    • USB Root Hub (xHCI)


    I uninstalled USB Root Hub first. That removed all three. Rebooted, USB drive still does not work.

    I uninstalled "Intel (R)..." and it removed all three. Rebooted. Still didn't work.

    I uninstalled USB Composite device.... then the other two, one after the other. Rebooted, still no joy.

    Tried "updating" the drivers too. Selected "search automatically" and it takes about 2 seconds to say there is no better driver. Somehow I don't think it is really looking that hard.

    Any way to force a driver update check on Windows Update?
      My System SpecsSystem Spec

  4. #4


    Canada
    Posts : 1,950
    windows 8.1 Update 1 Pro 64bit


    Is kb2917929 installed in installed update? This was supposedly to fix the BOS descriptor of the USB ports.
    If not, download it from the Download Center and install.
    Download Update for Windows 8.1 (KB2917929) from Official Microsoft Download Center
      My System SpecsSystem Spec

  5. #5


    UK
    Posts : 11
    Windows 8.1


    Thank you for the reply.

    kb2917929 was already installed. Have gone and installed all of the optional updates just in case. Same problem... And I checked the USB drive on a different machine, so it's not that.
      My System SpecsSystem Spec

  6. #6


    UK
    Posts : 11
    Windows 8.1


    And I worked through this....

    Why does my USB device work on Windows 8.0 but fail on Windows 8.1 with code 43? - Microsoft Windows USB Core Team Blog - Site Home - MSDN Blogs

    I only get a “Get Full Device Descriptor” message, so it's not a BOS descriptor that Win8.1 does not tolerate.
      My System SpecsSystem Spec

  7. #7


    Canada
    Posts : 1,950
    windows 8.1 Update 1 Pro 64bit


    Which device are you trying to plug in or is it all USB2 devices?
      My System SpecsSystem Spec

  8. #8


    UK
    Posts : 11
    Windows 8.1


    It's any USB2 device. The one I am using for testing is a Kingston 16Gb USB thumb drive, DT160, but an old Lexar firefly doesn't work, nor does a Sidewinder game pad or a wireless keyboard/trackpad device.
      My System SpecsSystem Spec

  9. #9


    Canada
    Posts : 1,950
    windows 8.1 Update 1 Pro 64bit


    Is Legacy enabled in the BIOS under USB controller ???

    If it still does work, do a Windows Refresh. All apps will have to be reinstalled though but your data remains intact. Backup your data anyways before doing the following:

    Refresh Windows 8 suggest Option 2
      My System SpecsSystem Spec

  10. #10


    UK
    Posts : 11
    Windows 8.1


    If I recall correctly, the BIOS has two options, XHCI and EHCI. It is set to XHCI (was the default) and I changed it to EHCI to try to fix it. After this, USB3 stopped working.

    I tried each of the options for re-installing windows before posting the thread in a hope I would get back to Windows 8 and working USB.

    I tried "Refresh your PC without affecting your files". Then I tried "Remove Everything and Reinstall windows". After each I ended up with Windows 8.1 and broken USB2.

    However, looking at the link you posted it says

    If you have an OEM PC that came with Windows 8 preinstalled and updated to Windows 8.1, then when you refresh Windows, it will restore Windows 8. Afterwards, you will need to update to Windows 8.1 via the Store again.
    This sounds much more promising. I gave "Refresh your PC without affecting your files" a poke and it complained that it needed another 5Gb of storage space, so maybe I never tried it, although it didn't warn me that I would need to re-install Windows 8.1.

    I am away for a few days, so will have to wait til I get back to try this again.
      My System SpecsSystem Spec

Page 1 of 2 12 LastLast
USB2 Error 43 on Windows 8.1
Related Threads
Hello all, I have a desktop computer which has stopped allowing connection of storage (USB) devices to the motherboard. Also the card reader does not work. (see attached for device manager snap shot). notes I have isolated the issue down to a driver error between windows 8.1 and Intel but...
Lost all USB2/3 in Windows 8.1 in General Support
I was gone for 5 days and I came back to NO USB's working. There were no power outages or anything like that. I called Asrock my board iis Z87 Extreme11/ac P1.10, and the told me to reset the Cmos. F2 to UEFI then F9 hit enter then F10 hit enter. That worked after I talked to them. Then today...
Here is the deal .. Windows 8.1 and I have an Asus computer that is less than 2 months old. But the USB performance is pretty poor .. I thought it was my USB stick, so bought a new one USB 3.0. But it was worse in my test below. I did a test. Copied a 190 MB file to each USB Stick from my...
Hi there Just want to say that on a decent laptop (i5 processor) running Windows to Go from a standard external USB2 disk (using a 7200 RPM old laptop drive connected via a sata==>usb2 connector) performance is certainly totally ACCEPTABLE. Even running Photoshop is OK - and I've connected the...
I am trying to free up space on my 120GB SSD. I looked into reducing the page-file and/or moving it to my data HDD (500GB & 750GB). I have 16GB of ram, so the page-file will rarely if ever be used. I would like to have it completely off of my SSD to help with longevity of the drive. I like to have...
Every usb flash drive which works at other computers cannot be recognized unless is disabled at . Even though usb flash drives work by disabling it, the speed has become too slow in usb 1.1 mode. Is there any way to use usb flash drives without disabling Intel(R) 82801G (ICH7 Family) USB2...
Hi there Just running some tests on three average external USB2 HDD (self powered) 1TB drive -- Thicker older WD model -- not the Passport type but still self powered. On a USB2 connection the data transfer still around 50% FASTER than when formatted with standard MBR. Unless you NEED the...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook