A fix to play the game on Windows 10.
Just download the archive and copy the dll into the game directory.
I’ve tested this fix with the steam version and the german retail version. The game is playable, but still very unstable. Save often!
There is a known crush which occurs if you want to start a battle in specific provinces. This crush can be avoided if you set the resolution and detail level on a low/mid level.
It could need several times, until the game starts, even with this fix. If the game crashes at the first try, try again ;).