Not Working in Steam Offline Mode

Im getting a “Licence not verified. There is no Live Connection to Server” error message when starting the game in Steam Offline Mode.

I’m using Windows 10 on a MacBook Pro. I normally don’t use the internet while booting Windows and Steam is in offline mode all the time.
I only have a good internet connection once a week and use my phone (8 Kb/s) the other days.

So if I’m forced to be online to play the game, I’m always at risk disabling Steam for several days until I have a good connection if there is a Steam/Game update.

This is hugely disappointing.
Especially because I first heard about the game only two weeks ago and KCD is the first game I ever bought at release.

Being online, even via Phone the game starts without problem.