Why can't I play with one specific friend on teraria?

I would still suggest removing and re-adding him as your friend on Xbox just to test.

If this will not work, try checking your privacy settings and make sure everything is allow on your privacy and online safety through this link:

https://account.xbox.com/settings

If the problem is the same, please reach out to the developer of the game to check with them on what is going on as this is already an in game problem.

Hi there! This is Ronnie, an independent adviser.

Nice to meet you and I hope you are having a great day!

I understand you need help on your issue playing with your friend.

What error message are you getting when you try to play with your friend on that specific game?

Have you tried deleting your friend from your list then adding him again?

Are both your NAT types open?

If there is no issue on your console or any other games, this could be specific to only this game.

You may also try reaching out to the game developer as well if that is the case.

No error message, it just says "lost connection."

I have not tried deleting this person, nor do I think it would work.

Both of our NAT types are open,

I can't play online either and I got it to play with friends online specifically

Okay, can you do me a favor and next time you try to connect with this specific friend, can you and our friend both submit a report through the Report a Problem app. You can download it from the store on the Xbox and please add [Xbox Forums] to the title. Once you do so can you please share the names of each report that both you and your fiend submit so that we can investigate on both ends.

Thank you,