Further it is necessary that TCP and UDP are forwarded. If you changed the default port you also Need to use the new port on your router or cable modem.
The default port of Farming-Simulator is: 10823. Please activate the UPNP option on your router or cable modem. Last but not least, the player that hosts a network game might not have (properly) setup the port forwarding at his router. Do you use any mods? You also have to use the exact same mods as the host player.It is also important to check the filters setting, You might have not given the right information in order to find the desired game when you used the in-game filters.You can download the latest update on Updates First of all, please make sure that you use the same game version as the host player.This message can appear in several cases: