Summary of Win11
- How to fix error a device attached to the system is not functioning?
- What does a device attached to the system is not functional?
- Why is a device attached device not functioning on my iPhone?
- How to fix error copying file or folder a device attached to the system is not functioning?
Search Results
AI Overview
AI Overview
When a device attached to your system isn’t working, the common fixes involve basic troubleshooting like
reconnecting the device, using a different USB port, or restarting the computer, alongside driver updates, running system file checks (SFC/DISM), checking for Windows updates, or reinstalling the device driver in Device Manager. The error often points to connection issues, corrupt drivers, or system file problems, especially with USB devices.
This video provides a quick overview of the solutions for this error:
02:12
Etechniz
YouTube • May 1, 2025
Initial Checks & Quick Fixes
Reconnect: Unplug the device, wait a few seconds, and plug it back in securely, as shown in this YouTube video.
Try a Different Port: Use another USB port, preferably a USB 3.0 port (often blue) if available, says
this YouTube video
.
Restart: A simple restart of your computer can resolve temporary glitches, according to this wikiHow article and this Microsoft Learn page.
Check Cables: Ensure the USB cable isn’t damaged; try a different one if possible, as noted by this YouTube video and this forum.
This video demonstrates how to check the device manager for issues:
1m
FixITKalia
YouTube • Oct 22, 2024
Driver & System Solutions (Windows)
Update Drivers: In Device Manager (Right-click Start > Device Manager), find your device (under Universal Serial Bus controllers or other categories), right-click, and select “Update driver,” suggests this Microsoft Learn page.
Reinstall Driver: Uninstall the device in Device Manager and then restart your PC to let Windows reinstall it, says this wikiHow article and this YouTube video.
Run System File Checker (SFC): Open Command Prompt as admin and run sfc /scannow to repair corrupted system files, notes this Microsoft Learn page and this DiskGenius article.
Update Windows: Install the latest Windows updates, as they often include driver fixes, notes this wikiHow article.
This video explains how to check for Windows updates:
55s
Shabd Tech Support
YouTube • May 28, 2023
Advanced Solutions
**
How to Fix “A Device Attached to the System Is Not Functioning”
How to Fix “A Device Attached to the System Is Not Functioning” * Reconnect the USB device. * Try a different USB port. * Restart …
wikiHow
A Device Attached to The System is Not Functioning [Fixed]
A Device Attached to The System is Not Functioning [Fixed] * Method 1: Reconnect your device. You may encounter this error because…
Driver Easy
A device attached to the system is not functioning – Microsoft Learn
7 answers. Sort by: Most helpful. Feb 15, 2022, 7:21 PM. Hi hiramj5077, Thanks for your post in Microsoft Community. It sounds lik…
Microsoft Learn
Show all
Show more
See screenshot, I’m really confused as to what is going on here: https://i.imgur.com/kW8o0pD.png
Tons of processes at the top level, less than 100KB private bytes each.
And always with the message “A device attached to the system is not functioning.”
Killing the processes doesn’t work. Access is denied, even as Administrator.
Most are firefox, but firefox is running normally: https://i.imgur.com/a2ro3CL.png
Anyone have any idea what’s going on here? It’s on a Lenovo Legion laptop with an AMD CPU, win11 install from the store: https://i.imgur.com/vbrOPpw.png
2
I find the amount of sessions weird, it goes up to at least 10. The high number of PIDs also tells me the system has been running a while. Does this happen pretty soon after a reboot or does it take days? Is this computer shared with someone else? Maybe have a look at the user name column.
Happens right after boot, they’re there immediately. Before I start firefox proper, too.
Username is all my username.
Not a shared pc(it’s a laptop). Never runs for more than a few hours.
Pretty sure the shutdown is a full shutdown on this system.
That thing that stands out to me is how small they all are.
And it’s not just firefox, it’s also a few XRiteColorAssistant, which is a tool that came pre-installed.
EDIT: Tried user NirCmd to elevate a powershell session to run as SYSTEM user. Then tried Taskkill /PID <pid> /F on such a PID. Still got “Access Denied”
4
Open classic System control, go to power settings, open the “what to do when pressing the power button” and make sure fast start is disabled. The next reboot should be a full one.
Or do an emergency reboot: Ctrl+Alt+Del, then hold Ctrl and click the power button. MAKE SURE EVERYTHING IS SAVED!
If you can’t kill a process it is either protected (like an anti virus service) or a zombie.