Strange, since the patch today I get the Backend-Server-Error 1110. How to fix that?
First I was able to start the game till the mission selection. Then I got the above error and the game closes.
After that, I’m no longer able to get into the game getting Back-End-Error 1110 all the time.
I let the file check from Steam running over the installation and it found one corrupted file. After fixing it that way the game works. Very odd that a small patch is corrupting a file.