On rare occasions when you click the UCCNC installer, it will seem like it is going to run but then nothing happens.  In order for UCCNC to properly install, it requires the .Net 2.0 framework and some Windows 10 machines, it is turned off by default.  You can turn this on easily by following this video.
If after watching this video, you are still having problems, please email our support team at support@stepcraft.us