They don't seem to have a problem getting on, but I have difficulties even though its my server.
These methods will not allow you to set up a dedicated or LAN server but rather use Steam's servers to broadcast your world. Host & Play games are started via the regular Terraria application.
First, go to CMD on your windows and type "ipconfig" and… To play Terraria with friends using Steam you need to run and setup Terraria Server, which is a console app that is located at Terraria root folder.For example c:\SteamLibrary\steamapps\common\Terraria\start-server-steam-friends.bat.
Steam is the ultimate destination for playing, discussing, and creating games. If you want to create a dedicated server see Guide:Setting up a Terraria server. Not an internet problem, either. Here's how to get it set up. Other network or internet players can then join, by choosing "Join" from the multiplayer menu or "Join Via Steam" if they are friends on Steam. Run the game first; Find Terraria's root folder; Run the server; Setup the server
Go to Steam, right-click Terraria and go to Properties after which click on Local Files tab and Verify Integrity of Local Files. But beyond new items, biomes, bosses and golf, Journey’s End formalises mod support by releasing a fan-made kit as free DLC, putting Terraria’s future in the hands of the folks still playing it ten years on. I have a server running on my desktop pc for terraria that my brothers and myself try to play on. So, I try to join my friend's Terraria game via Steam, already restarted everything from game files, to my computer, but when I try to join it says "Connecting to " Literally, it doesn't even say my friends world name after, it just says "Connecting to". Today, I found out how to setup one of my favorite games, Terraria, so I could play with my brother over LAN. Dropping today, Journey’s End is an exhaustive final update for Re-Logic’s venerable block-building sandbox.
Steam Multiplayer for Terraria was introduced in 1.3.0.1, … However, if you're using Steam cloud saves, the files will be in a different location.