Joining game session attempt #1..#2..#3 Help

[Zmile]

When i to play with my friend by joining him it says joining game session attempt #1..#2..#3 etc.
We've tried almost everything but can't seem to find the solution, anyone got an idea on what to do?

Note! this only happens when we try to join eachothers parties even private and local, We can search a game by ourselves but, there's no fun in that.

[CursedKamov]

same problem to me

[^1Ma ^0Long]

restart router verify open ports, etcc

[Tailmon]

I have the same problem, I realised I had the NAT trype strict and I did this:

Originally posted by ^1Ma ^0Long:

restart router verify open ports, etcc

And for me, it didn't work. anyone knows what to do?

[Odin]

it doesn't have nothing to do with open nat or open ports. I get the same error everytime i try to join a friend (who also has open nat and ports), i can only join 1 friend, the only one who doesn't have either open nat and ports lol.
The MP is just broken and since the game is too old, IW doesn't care about it anymore.