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Restart the Willar software. It should now display at the bottom of the window. Quick Troubleshooting

If Windows still rejects the driver:

, provided you bypass its classic legacy limitations by installing the proper USB-to-UART bridge driver and manually overriding the virtual COM port assignments.

Look through the list for an item marked with a yellow exclamation point, usually listed under Other devices as "Unknown Device" or "Willar Programmer". Right-click the device and select . Choose Browse my computer for drivers .