Birkemeier Consulting Tech Blog

Monday, June 23, 2008

Fix Logitech Keyboard & Mouse "Unknown device" in device manager

When you move a logitech keyboard or mouse to a different USB port, you may find that you receive an error that the device was not install correctly, and in device manager you see "Unknown device" under the Keyboars and Mice groups. To fix this follw these steps:

1. delete the wdf01000.sys file usually located in the %systemroot%/system32/drivers folder

2. delete the "Unknown device" entrie from the Mice and other pointing devices group indevice manager.

3. Unplug you mouse from the computer count to 10 and plug it back in. You should see "Logitech HID-compliant ..." appear in device manager.

4. delete the wdf01000.sys file again.

5. This time delete the "Unknown device" entrie from the Keyboards group indevice manager.

6. Unplug you keyboard from the computer count to 10 and plug it back in. You should see "Logitech HID-compliant ..." appear in device manager unbder the keyboards group.

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