I just received the flirc today. Plugged it into my PC - running Win 10 Home x64 - and it showed up as an unrecognized device. Downloaded the gui and while that seemed to install ok, it showed my device was not attached. Tried deleting the device and plugging it back in, but same thing - device unrecognized. I tried updating the device driver and choosing both inf files from the installed driver directory, but that wouldn't work either. Finally I manually ran installer_x64.exe (or was it wdi-simple-64.exe - darn, I don't recall) as admin and then the device was recognized. So, my problems are solved but thought I'd let you know something isn't quite right with the installer. If there's anything I can do or provide to help, let me know.