This tip was submitted to the SearchWinSystems.com tip exchange by member Andy Macdonald. Please let other users know how useful it is by rating it below.
Do you ever get the "USB device malfunction" message on your fully-patched Windows XP SP2 box? Sometimes, the 'Unknown Device' error still reappears under the "Universal Serial Bus controllers" category even after you've tried disabling the system as I suggested in my previous tip (
This is when it's time to use Registry Editor. You will need to use the modern Registry Editor, regedt32.exe, because you must give yourself rights to delete a key. (The usual caveats apply -- if you make a mistake, serious consequences may arise.)
- In regedt32 go to: HKEY_LOCAL_MACHINE\System\CCS\Enum\USB.
- Look in each folder labeled Vid_Xxxx. There should be subfolders containing information about one of your USB devices in each.
- Right click on the Vid_Xxxx folder that contains a folder labeled 'Unknown Device' in it and click Properties.
- Check Allow Full Control, then right click on the same Vid_Xxxx folder and delete it.
- Reboot and plug the device in.
Do you have comments on this tip? Let us know.
This was first published in February 2005