ValkariandDemolich

My friend is making a server through Hamachi and it wont work. Every single time I try to connect it tells me Connection error: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. Any suggestions? I feel like he has tried everything, and he can't figure out how to port forward with his router, as it is really confusing.