If you are experiencing issues connecting to the Intel XDK from AppPreview in the “Local Apps” tab on a Windows 8 on the same device, run the following command from the cmd prompt. It will allow the the XDK and App Preview to communicate. DO NOT copy/paste it, I had to type it in for it to work. If it works, it will return OK.
CheckNetIsolation.exe LoopbackExempt –a –n=appup.intelapppreview_8j3eq9eme6ctt