Pyusb On Windows 8.1 - No Backend Available - How To Install Libusb?

Working on pyinstaller 3.1, python 2.7.9, and tkinter. Try to use pyusb instead of pyserial, but no backend available. Looking into Pyusb on windows - no backend available, PyUSB V

Solution 1:

I downloaded latest libusb windows binaries from here: http://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-1.0.20/libusb-1.0.20.7z/download then I copied libusb1.dll according to this: when you are on 64-bit Windows, MS64\dll\libusb-1.0.dll must be copied into C:\Windows\System32 and (for running 32-bit applications that use libusb) MS32\dll\libusb-1.0.dll must be copied into C:\Windows\SysWOW64. and then I copied libusb1.lib from binaries to lib dir in python directory and now pyusb works for me. hope it helps.