[2021] CK3 not working

In the game launcher please set Display mode to windowed. THEN go here:

The latest supported Visual C++ downloads

This article lists the download links for the latest versions of Visual C++. support.microsoft.com And run the x86 and x64 installers there.


IF that doesn't help, Has the game ever run OK on this computer? Or never?

IF NEVER:
Install ALL these Microsoft modules:

Download Microsoft Visual C++ 2015 Redistributable Update 3 RC from Official Microsoft Download Center

www.microsoft.com

Download DirectX End-User Runtimes (June 2010) from Official Microsoft Download Center

www.microsoft.com (run dxsetup.exe after extracting from this download)

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.


IF IT USED TO WORK:
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
- 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.
- start the game with no mods active and test

In particular make sure there are no files or folders left under either the Steam CK3 or Documents CK3 locations, before installing again.


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

mehman6000 said: i do not know why but when i try to reply to you it says that my reply is spam

Users with low post counts cannot include links in their posts. This is a forum anti-spam measure.

No mention of this game in that dxdiag which is unusual for a won't-start issue like this. But you may as well update that nVidia driver to the May 2021 version:
Download Drivers | NVIDIA
IF that doesn't help, Has the game ever run OK on this computer? Or never?

The previous game CK2 is free to play on Steam now, does it work okay?  

What happens if you exit the Steam app entirely then run ck3.exe ? Any error show up then, or what exactly do you see?  

Did you install these updates?

The latest supported Visual C++ downloads

This article lists the download links for the latest versions of Visual C++. support.microsoft.com And run the x86 and x64 installers there.

Because you dont actually mention them above.  

mehman6000 said: still doesn't work, i already tried running ck3 exe, same results as when i use steam

So you see no Windows error when you do that? What exactly do you see? Does the game appear in Task manager-processes at all, or just the launcher?  

This is a strange one, we still have nothing anywhere that points us to what the problem might be.

Please install and run the free utility Speccy. Send its output to a text file and attach that here, thanks.  

Click on File up the top left, then export to a text file.  

In there we see you have Norton AV app, but it is disabled. It can still get in the way like that. I suggest you remove it completely with the free Revo Uninstaller and Ccleaner utilities.

We also see you have Windows updates going beck to October that have failed to install. Run the Update app, does that go okay? Find anything to apply?

I haven't seen this before:
C:\Program Files (x86)\Hotspot Shield\10.9.3\bin\cmw_srv.exe
What does it do, can you disable it as a test?

I don't see anything else of concern in there.