[2021] Stellaris won't launch

In the game launcher please set Display mode to Borderless.

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

IF IT USED TO RUN:
Please do a full **clean** re-install:

- move any valued save games elsewhere, and user_empire_designs.txt from /Documents/Paradox Interactive/Stellaris/ if you have made any custom empires or races.
- "uninstall" in Steam-Stellaris
- manually delete both the Steam/SteamApps/common/Stellaris AND Documents/Paradox/Stellaris folders
- re-install game in Steam, run a Steam Verify when done.
- add stellaris.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 you need to make sure there are no files or folders left under either the Steam Stellaris or Documents Stellaris locations, before installing again.


IF NEVER:
Install ALL these Microsoft modules:

Download Microsoft Visual C++ 2010 SP1 Redistributable Package (x86) from Official Microsoft Download Center

www.microsoft.com

Download Microsoft Visual C++ 2010 SP1 Redistributable Package (x64) from Official Microsoft Download Center

www.microsoft.com

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 stellaris.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 FRAPS or the MSI Gaming App or Rivatuner installed, disable it as it clashes with this game.

If that doesn't help:
DXDIAG is a program you run from a command prompt or the Windows start menu 'run' dialog box (or 'search programs' in Windows 7 or later). 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/Stellaris/settings.txt and pdx_settings.txt .
From your Documents/Paradox/Stellaris/logs/ folder, attach system.log , error.log .  

I have seen that Windows error c06d007e against Stellaris before, but we never found the root cause:

Stellaris Fails to Launch

Hello, Ever since the release of 2.7, I have been entirely unable to launch Stellaris through any means. I have tried everything in the 'Known Issues and Solutions' thread, but I've seen no difference. The only solution I've found on my own is... forum.paradoxplaza.com
Basically they did a Windows Reset and it came good, so clearly there was a Windows problem of some sort. Is that something you could contemplate? Are you having any other Windows problems, would you say?  

You don't have the same problem, actually. In future please make your own fresh thread, thanks.

The game is crashing in poco.dll:

Windows Error Reporting:
+++ WER0 +++:
Depósito con errores 2018054904893317855, tipo 5
Nombre de evento: BEX64
Respuesta: No disponible
Identificador de archivo .cab: 0

Firma del problema:
P1: stellaris.exe
P2: 1.0.0.0
P3: 60a29fd0
P4: poco.dll_unloaded

which i believe comes with the nvidia software. Please try this:

- uninstall your nVidia driver and all other nVidia software
- reboot
- install the latest (June 2021) from here:
Download Drivers | NVIDIA - reboot again

Good luck with that!