Notso9bit

The vanilla server with the .bat file and the forge server just by opening the jar. Could that be the problem?

When I search for java in my programs & features only one version comes up so I assume so. The only firewall I have on my PC is Windows firewall which didnt make a difference when I turned it off and ran the server. And for the router I have the 25565 port allowed for my PCs IPv4 address in the firewall rules.

ty for the reply, I added it in a spoiler

I have a problem. When I create a regular vanilla Minecraft server anyone can connect to it, because the 25565 port is forwarded etc. But if I create a forge server, only I can connect to it using "localhost" for the IP. The person trying to connect has the same mod installed, and the same version of forge, but cant connect to the server or even see that the server is online. And neither can I if I enter my public IP (like 36.75x.xx.137). Im using 1.10.2 forge. Log Properties: