To create a private match in killing floor 2 all you need to do is add your friends to the game and matchmake.
How to invite players in killing floor 2.
Killing floor 2 features cross platform multiplayer functionality on pc between epic games and steam.
Killing floor 2 private match how to play killing floor 2 with friends.
Step 1 search teh forums.
If they have then maybe they did not accept your invitation.
Lots of pc players want to know whether killing floor 2 is cross platform between steam epic games and consoles thanks to the shooter becoming a freebie.
If not then that is the problem.
To that end we re happy to announce that killing floor 2 will be coming soon to the epic games store.
You can add your friends to the game using the in game menu.
For killing floor 2 on the playstation 4 a gamefaqs message board topic titled creating squad problems.
Only these things i can think to cause your problem.
In theory that invite window shows those your steam friends who have the killing floor 2 and online.
I guess some of your friends have the killing floor 2 am i right.
When a friend is in a game and you get the server is not responding message then.