[2023] Fossilize ERROR on launch

I have no idea what could cause that, entirely new error message to me.

What platform are you playing this on please? Just standard Windows 10/11 or something else?  

I see, I wondered because most Google hits I got on the Steam error were on Linux.

Has the game ever worked on this machine or it has always been like this?

What happens if you run ck3.exe directly from File Explorer?  

Gee, I wonder if we have a Steam and a game/Windows issue here.

The error in your OP here: do you see our launcher okay but that error occurs when you hit PLAY in it? Or that error is when you hit PLAY in Steam, before our launcher appears?


DXDIAG is a program you run from the Windows search box on the task bar. After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.

Please attach here your Documents/Paradox Interactive/CK3/pdx_settings.txt .
From your Documents/Paradox Interactive/CK3/logs/ folder, attach here system.log , error.log , exceptions.log