What does "USB Device Has Malfunctioned" mean on Windows?

The short answer

“USB Device Has Malfunctioned” means Windows detected something plugged into a USB port but couldn’t communicate with it properly. The device itself is usually fine — the connection just needs some troubleshooting.

Why does this happen?

This notification pops up for a few common reasons:

  • Loose or faulty cable — the USB cable isn’t fully plugged in or is damaged
  • The USB port is worn out — physical ports can degrade over time, especially on laptops
  • Driver issues — Windows doesn’t have the right software to talk to the device, or the existing driver is outdated or corrupted
  • Not enough power — some USB devices (like external hard drives) need more power than a single port can provide
  • USB hub overload — too many devices plugged into one hub can cause communication failures
  • Temporary glitch — Windows or the device had a one-time hiccup during connection

How to fix it

  1. Unplug and replug the device — remove it, wait a few seconds, and plug it back in firmly
  2. Try a different USB port — use a port directly on your computer, not a hub
  3. Try a different cable — if the device uses a detachable cable, swap it out
  4. Restart your computer — this resets all USB controllers and clears temporary issues
  5. Update or reinstall the driver — open Device Manager, find the device (it may have a yellow warning icon), right-click it, and choose “Update driver” or “Uninstall device,” then replug it
  6. Disable USB selective suspend — go to Power Options, change plan settings, and turn off “USB selective suspend setting” under USB settings
  7. Test on another computer — if the device fails everywhere, the device itself may be the problem

When should you worry?

Most of the time, this is a minor connection issue. But pay attention if:

  • The same device keeps malfunctioning across multiple ports and computers — it may be physically damaged
  • You see this error on every USB device you plug in — your USB controller or motherboard could have a hardware problem
  • The device contains important data (like a flash drive or external hard drive) — stop plugging and unplugging it repeatedly, as this can make data recovery harder