USB device not recognized: the last USB device you connected to this computer malfunctioned (Device Descriptor Request F

Last checked 2026-10-26 · 4 fixes · reviewed answer

TL;DRWindows cannot communicate with a USB device because it failed to read the device's basic information, triggering error code 43.

Most likely cause: The USB device or its cable is faulty or damaged

Try first: Try a different USB port

Likely causes

Safest first: SafeChanges settingsDangerous

Try a different USB portSafe

Unplug the device and plug it into another USB port on the computer, preferably a rear port on a desktop.
Test with another cable or deviceSafe

If the device uses a removable cable, swap it with a known working cable or test the device on another computer.
Restart the computerChanges settings

Fully shut down and restart Windows to reset USB controllers.
Reset the USB device in Device ManagerChanges settings

Open Device Manager, find the unknown USB device under Universal Serial Bus controllers, right-click it and choose Uninstall device, then unplug and replug the device.
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No command line; use Device Manager GUI
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⚠ This removes the current driver entry but Windows will reinstall it on reconnect.

Check Event Viewer for more specific USB errors under Windows Logs > System

If the error occurs with multiple different USB devices or ports, have the computer's USB hardware inspected.

What does USB device not recognized: the last USB device you connected to this computer malfunctioned (Device Descriptor Request F mean?: Windows cannot communicate with a USB device because it failed to read the device's basic information, triggering error code 43.
What causes USB device not recognized: the last USB device you connected to this computer malfunctioned (Device Descriptor Request F?: The USB device or its cable is faulty or damaged. (most likely) Problem with the USB port or insufficient power. (possible) Corrupted USB driver or controller in Windows. (less likely)
How do I fix USB device not recognized: the last USB device you connected to this computer malfunctioned (Device Descriptor Request F?: Try these in order, safest first: 1. Try a different USB port. 2. Test with another cable or device. 3. Restart the computer. 4. Reset the USB device in Device Manager.
What if that didn't fix it?: Check Event Viewer for more specific USB errors under Windows Logs > System
When should I see a technician?: If the error occurs with multiple different USB devices or ports, have the computer's USB hardware inspected.