Multiplayer-related Issues

Co-op / Multiplayer Instructions
For console users, make sure your PlayStation®Plus or Xbox Live Gold membership is still valid and follow the instructions below:  1. In order to play the...
Wed, 23 May, 2018 at 3:37 PM
Network ports used by Steam/PSN/XboxOne
In order for the multiplayer mode to work correctly, make sure that the official Steam/XBO/PS4 ports are unlocked. You can find the ports at their official w...
Wed, 23 May, 2018 at 3:37 PM
NAT settings
It is possible that your online experience is affected by your NAT type.  In general: NAT 1 can be connected with NAT 1, NAT 2 and NAT 3 NAT 2 can be co...
Wed, 23 May, 2018 at 3:39 PM
[XBOX1] Can't join a friend's game / Game session no longer available
How far are you and your friend into the game's storyline - does the game indicate about 93% of progression for any of you? Starting from around 93%,...
Wed, 23 May, 2018 at 3:40 PM
[Steam] Your game appears to be using modified data
Delete your Steam games, delete Steam software itself, then re-install Steam (preferably to its default directory) and, finally, re-install your games on the...
Wed, 23 May, 2018 at 3:41 PM
[PC] Game no longer available error
We advise you and your friend to complete just one more main quest and try connecting again after that.
Wed, 23 May, 2018 at 3:42 PM
Unable to invade players as the Zombie
Most likely, the players you are trying to invade do not wish to be invaded and have the option turned off or limited. Also, the mode works on a "first ...
Wed, 23 May, 2018 at 3:42 PM