Multiplayer Issue

[rennerpetey]

Whenever I start the game and try to join a multiplayer server, either over LAN or over Internet, after I click join game, the game will not load and throws me back to the home menu. After I try this once, the multiplayer button turns grey and when I hover over it it says "Game state is corrupted. Please restart the game." Restarting the game yields the same results.

I've done this quite a few times and it never works. I've even uninstalled and re-downloaded with the same results. I have the Steam version. Help?

 

[AndrewT]

After I try this once, the multiplayer button turns grey and when I hover over it it says "Game state is corrupted. Please restart the game."

This is normal and by design.

The rest of what you report is not, of course. Start by going through my standard MP checklist for this game:

- make sure all players have opened the required Steam ports in all their active firewalls (each player may have up to 3)
https://support.steampowered.com/kb_article.php?ref=8571-GLVN-8711

- all players delete their documents/paradox/ck2/gfx/ folders, and let the game recreate them
- use no mods at all
- all players use the same language in-game
- when anyone gets an OOS error, re-host the game immediately, as it will almost certainly crash soon
- start your multiplayer games and wait half a minute or so before unpausing without any player performing any action at all. Only after the game has been unpaused should players begin doing actions like setting up councils, declaring war etc.