Borderlands: Game of the Year Edition players are reporting issues with matchmaking.
For several days now, players have been reporting issues on both the Gearbox forums and Reddit (thanks, Game Informer) stating players cannot join multiplayer lobbies, either with their friends or with random partners. Whilst initially it seemed to primarily affect players on PlayStation 4, Xbox One and PC users are reporting difficulties, too.
“I’ve seen a few pop up here and there as well searching different threads where several people were having this issue (PS4 & some XB1),” wrote r/MakeMercaUpvoteAgain. “I feel like this is a huge issue that is being overlooked. I bought this game for the sole purpose of playing with my brothers! It’s still an awesome game, but damn.. this is a pretty significant issue!”
Source: Eurogamer Gearbox is "actively working on a solution" for Borderlands GOTY Edition matchmaking issues