So I recently built someone a computer and after installing FF14 on it, there seems to be some problem when hitting start at the main menu. They're able to sign in on the launcher and hit play but getting to the screen and trying to continue to character select causes the network connection to stop working on that computer. Nothing else that requires an internet connection will work either until the game 2002's and closes.

Does anyone know what might be wrong? That's the only online game installed on there so far so it's hard to test any others but I'm not too sure what to do.