Question Gameserver on Windows Server 2016

[simonbck]

I bought a new PC and thought "Why not use my old PC as a gameserver". I installed Windows Server 2016 and tried my best Installing Minecraft as a first project. The server got up and running, i can connect via the internal ip of the old computer from my new one, but the public IP from the server can't be used to connect to the "server". Not even from my local network. I forwarded all ports, UDP and TCP on both my firewall and my router. I tried disabling the firewall. It still does not work. I tried to ping the server with the public IP, didn't work, but the local network IP worked. I don't know why the server does not recieve any requests via the public IP and i tried the whole day. I would appreciate any help. Thanks

 

[kanewolf]

Your router may not "hairpin" route. Try using your phone as a WIFI hotspot. You are guaranteed to have to use the public IP then.