how to fix unable to join game session

[DomingoRTT]

I was having the same problem and what fixed the issue was updating steam even though I don't own an original copy of black ops 2 on steam.

[Maariannn12]

TheFitz Hello! What do you mean by updating steam? Thank you!

[ConnorTCM]

Closing steam then launching the game should fix this!

[Lightower]

I FOUND a semi-consistent FIX. When you invite your friend to your game don't leave the friend invite screen until they join the party. An example like, start your own custom zombies game -> pick a map -> press F to select your friend -> press invite and don't leave that window until they join. I found that to work more often than not.

[Frank_RsK]

te has fumado un porro que flipas

[ShaunX]

after closing out steam before launching it me and my friends were able to connect

[zTDK]

still cant join friends

[Bigley]

Yep some can join and some can't, its on and off, any fix or a known issue?

[maninozzz]

This post is deleted!

[Snaggycolt]

We found that running steam in the background fixes the issue

[gorel]

i cant join

[goobsoup]

im having the same issue and have yet to fix it

[3Pkrino]

allow it throgh fire wall guys

[Denichae]

3Pkrino how do you do that exactly?

[cstro]

I allowed everything through firewall, steam is updated and closed and still nothing is working

[mjed.ko]

what now ?

[moussets]

same for me

[bartoggy_v2]

Hi,

Same problem here, i can play with friends on online, but not zombie at all, open port 3074 and 4976, disable firewall and same error

[Cashewmilk]

same issue here

[LobotomisedRat]

I have the same issues, seems like there's a problem with plutonium instead of everyone here having a common probleme