How to fix ERR09

Launch Nvidea GeForce Experience
Find Dragons Dogma
Click details instead of play

As you can see here both the "CURRENT" and "OPTIMAL" setting are both set to fullscreen this is what's causing the error as the game can no longer be run in fullscreen so your gonna have to change that

Under "CURRENT" settings it shows what the games current settings are (no duh)
and under "OPTIMAL" it shows what the ideal settings are for a smooth and balnced game. If you were to it, it would mearly change to the recomended setting which would still be at fullscreen so don't do that.

Click on the litte wrench next to the optimize button

This will bring up custom settings and allow you to manually change the settings
Click on the tab that says Full-screen it will give you an option to play it in windowed, select this and hit APPLY in the bottom right corner