Well, Windows has already told you that this program doesn't work properly.
I'd give anyone credit for persevering with a problem, but if it remains unsolvable after three years then I think it's time to kick the program into touch as not being compatible with your system.
It may be because of what you have installed on your machines and perhaps seeing if you have any better luck by trying what you want to achieve in a clean boot will produce better results - that will be for you to pursue.
It may be firewalls - I don't know.....