This is often a power issue. Use a powered USB hub. Also, make sure the target chip is properly seated in the programmer’s ZIF socket.
The Willar software operates as a standalone executable ( WLPRO.exe ) and does not require a complex native installer. willar programmer software for windows 10 install
If you update Windows 10, it may overwrite unsigned drivers. If the programmer suddenly stops working after a system update, repeat Step 3 and Step 4 to reinstall the driver. This is often a power issue