Ensure the interface is plugged into a USB 2.0 port or a powered hub. Windows 11 sometimes has trouble with these devices on USB 3.0/3.1 ports.
Download the libusbK version of the uDMX driver, which is generally the most compatible with Windows 11. Reliable sources include ilLU[TZ]mination or the Zadig tool for automated installation. 2. Step-by-Step Installation Guide udmx driver windows 11