Hi @Warwin56,
A hotfix for this has just gone live. Could you download the update and see if this crash is resolved?
where can i downloade the MAJ on Steam ?
Thanks Shark
Yu are awesome FAST all rigth for me. Keep clm and carry on
Can you tell what the issue was, if you don’t mind me asking ?
My game slowed down significantly when a friend joined in the Keep and again when destroying a door, after which it crashed.
I deactivated all my mods and it’s now running fine, but I don’t know if it is because I turned all the mods off or thanks to the hotfix 
This specific matchmaking crash needed a code fix our side. That being said, disabling mods at the moment is likely a good shout, as there’s a few known issues.