Question 1

Install fails or stalls?

Accepted Answer

Run the UC100 driver installer as administrator, unplug the controller until setup finishes, and temporarily pause antivirus. Match the driver to Windows architecture; reboot before reconnecting.

Question 2

Device not detected?

Accepted Answer

Try a direct rear USB port or powered hub, a known-good USB cable, and confirm the UC100 LED/power. Check Device Manager for UC100 or unknown USB device; reinstall the driver with the controller connected.

Question 3

Driver/plugin version conflicts?

Accepted Answer

Uninstall older UC100 drivers in Device Manager (delete driver software), remove old CNC software plugins, then install the driver and plugin versions recommended for your Mach3/CNC app. Reboot and test one version only.

UC100 CNC Motion Controller Driver