Windows "Fullscreen Optimizations" can sometimes conflict with how Anno 1800 handles window layering, leading to a crash when the game loses focus or tries to render a new frame. Deep-Level Solutions Modify Configuration Files
It sounds like you're referring to an error message in Anno 1800 : — likely a DirectX-related crash. anno 1800 present failed
If the problem persists, try limiting FPS or reducing graphics settings like shadows and anti-aliasing. anno 1800 present failed
It is a frustrating administrative hurdle in a game that is otherwise a masterpiece of logistics and administration. Ironically, Anno 1800 teaches you to manage complex supply chains; dealing with Ubisoft’s DRM teaches you to manage complex digital rights chains. anno 1800 present failed