CK3 Crash, will no longer launch

Moved to Tech Support

I can't see any previous reports of yours. Are you able to link it?  

coling1 said: . Last trouble ticket I made about it with paradox just was marked solved a day later with no message, change, or support.

Probably you submitted by direct email; those tickets do get closed automatically as we only accept them from logged-in Paradox accounts, to ensure we are only helping genuine Paradox customers. You would have got an automated email explaining that.


As to your won't-start issue, it is likely unrelated to your slow play in a campaign with a huge empire or large wars - that's pretty normal actually.

Please do a full **clean** re-install:

- move any valued save games elsewhere
- "uninstall" in Steam-CK3
- manually delete both the Steam/SteamApps/common/CK3 AND Documents/Paradox Interactive/CK3 folders - In particular make sure there are no files or folders left under either the Steam CK3 or Documents CK3 locations, before installing again.
- re-install game in Steam, run a Steam Verify when done.
- add CK3.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.

THEN 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