usb not recognized

Andreas Jäger 0 Reputation points
2026-09-07T15:14:04.39+00:00

usb with driver 10.0.26100.8972 is not recognized by my computer

Windows for home | Other | Devices and drivers
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  1. John Jefferson Doyon 86,635 Reputation points Independent Advisor
    2026-09-07T15:52:18.1466667+00:00

    Hi, @Andreas Jäger

    If you haven't tried anything yet, please try a different USB port first. If possible, also test the USB device on another computer. This will help confirm whether the problem is with the USB device or the PC.

    Then open Device Manager:

    • Right-click Start > Device Manager.
    • Expand "Universal Serial Bus controllers".
    • Look for any device with a yellow warning icon or "Unknown USB Device".
    • Right-click it > Uninstall device, then restart the PC.

    If issue still persists, to help narrow this down:

    1. What type of USB device is it: flash drive, external drive, printer, phone, or something else?
    2. What exact message appears when you connect it?
    3. Does the USB device work on another computer or another USB port on this PC?

    Click "Add comment" to let me know.

    Thanks!

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  2. AI answer

    2026-09-07T15:14:23.46+00:00

    Try these checks in order:

    1. Open Device Manager
      • Select Start, type device manager, and open it.
      • Find the USB device. If it has a yellow warning icon, right-click it and select Properties.
      • Check Device status for the error code.
    2. Use the error code to guide the fix
      • For most Device Manager USB errors, follow the troubleshooting steps for that code.
      • If the device shows Code 28, that means the drivers for the device aren’t installed.
      • If the device appears as Unknown USB Device with USB\UNKNOWN or VID_0000&PID_0000, Windows failed to enumerate the device correctly.
    3. Test the hardware connection
      • Try a different USB port.
      • If possible, try a different cable.
      • Avoid USB hubs while testing.
      • If the device works on another computer but not this one, the issue can be with the port or controller on the current PC.
    4. If it is a USB 3.0 device on an older Windows 8 system
      • Connect it to a USB 2.0 port instead.
      • Some non-compliant USB 3.0 devices can fail with Code 10 and an invalid serial number descriptor on Windows 8.
    5. If the device is a USB communications or CDC control device
      • Windows can automatically load the in-box Usbser.sys driver when the device reports:
        • USB\Class_02
        • USB\Class_02&SubClass_02
      • If the device does not report the expected class/subclass, Windows may not load Usbser.sys automatically.
    6. If the problem started after a Windows 10 update
      • A known issue could remove USB device drivers unexpectedly because of the Windows update reliability tool.
      • Blocking that tool is possible, but it uses permission-changing commands and should be treated as an advanced workaround.

    If the device is still not recognized after trying another port and cable, the most likely causes in the available guidance are:

    • a USB port or cable problem,
    • a device enumeration failure,
    • a missing or unmatched driver,
    • or a hardware issue with the USB device itself.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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