Installing the LibUSB-Win64 filter driver is necessary for developing USB device applications using LibUSB-Win64. Without the filter driver, LibUSB-Win64 will not be able to communicate with USB devices, rendering it useless. The filter driver is required for:
Run USBView to inspect the driver stack. You should see an entry: Lower Filter: libusb0 . libusb-win64 filter installer
This approach contrasts with static driver installation (e.g., using Zadig to replace drivers with WinUSB/libusb). Installing the LibUSB-Win64 filter driver is necessary for