I have made the .bat file and I also put in cmd in the third line so the Command window comes up so you can see the execution in case anything goes wrong. First day it was a dream and communication was open for hours. I check that with the Java 'Internet Connectivity Monuitor 1.41'. And when it stopped I reran the .bat and it was open again.
Yesterday and today nothing happened, it was still closed when I ran it. And it was closed when the file had been run.
I don't understand why, but that is what I see.
Many of the other methods has been hailed to work as well and after a day r two they all failed. Maybe MS have a small IT guy located inside the Win8.1 operating system?? Just to stop our efforts:-)