almost 2 years ago - AndrewT - Direct link
Unlike Steam MS provide no way for us to distribute older or alternate game versions, I'm afraid.

Run ck3.exe from File Explorer directly, do you see any Windows error then?


If not, Right click on ck3.exe , properties, compatibility. Tick "disable fullScreen optimisations" untick every other box in that dialog, Apply and exit.
Then in the launcher Game Settings menu, select fullScreen display mode, Vsync off, cap refresh rate at 60.


If those don't help:
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  
almost 2 years ago - AndrewT - Direct link
That pdx_settings.txt is only partially there, not seen that before! Nor do I get that permissions error running ck3.exe - something outside the game is wrong here!

Would you say you are having issues with other games or apps?

Try this Windows repair tool:

Use the System File Checker tool to repair missing or corrupted system files - Microsoft Support

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista. support.microsoft.com support.microsoft.com