Libusb-win64 New! -

This is the most common source of confusion for hobbyists and engineers.

The device driver is installed, but the current User does not have permission to open it. Solution: On Windows, libusb-win64 typically uses the WinUSB stack which handles permissions automatically. However, if using the legacy libusb0.sys , you must run your application "As Administrator" or use inf-wizard to install a filter driver with relaxed security descriptors. libusb-win64

The most popular SDR dongle, the RTL2832U, requires libusb on Windows. Software like SDR# (SDRSharp), HDSDR , or CubicSDR uses libusb-win64 to stream IQ samples from the dongle at high speed (2.4 MSps). This is the most common source of confusion