[2021] EU4 won't launch using Epic games Launcher

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

Latest supported Visual C++ Redistributable downloads

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

IF that doesn't help, also Install ALL these Microsoft modules:

Download Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package MFC Security Update from Official Microsoft Download Center

A security issue has been identified leading to a vulnerability in MFC applications that are built with Visual Studio 2010 and ship the Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package. www.microsoft.com

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

This update is the latest in a cumulative series of feature additions and bug fixes for Microsoft Visual C++ 2015 Redistributable. 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 EU4.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.

Also if you have installed RivaTuner, RadeonPro, or a gaming VPN app called Evolve, or the MSI Gaming App, or Duet, disable it as it clashes with this game.

IF that doesn'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/EU4/settings.txt and pdx_settings.txt .
From your Documents/Paradox Interactive/EU4/logs/ folder, attach here system.log , error.log .  

Burz'Ro said: After nearly 10 hours of troubleshooting, I GOT IT WORKING!!!!

After all the stuff I explained that I did in previous posts, the thing that finally fixed it was to set it to borderless fullscreen.

Exactly as I said in post #3 above?  

WarpedGhost said: i tried doing what you said but it didn't work.

Erm, what? The first thing I said in post #3 was to try borderless display mode, which you now say fixed your problem .. ?!?  

Please update that nVidia driver to October 2021:

Download the latest official NVIDIA drivers

Download the latest official NVIDIA drivers www.nvidia.com
If that doesn't help please exit the Steam or EPic apps entirely then run eu4.exe directly from File Explorer. What happens then?  

oldmew said: My game doesn't work either.
It used to work well on another laptop I have, but ever since I change to this one, the game hasn't work even once.
And I tried all these, just don't work for me.

In future please make your own new thread, don't re-open old ones like this. The game has changed quite a bit since 2021.

If you have done everything in post #3 above, please provide the files I ask for there.

Then run eu4.exe directly from file explorer. Do you get a Windows error then, or what happens exactly?