AndrewT

What happens if you run eu4.exe directly from File Explorer? If it still fails you should get a more clear Windows error.  

Installing any EU4 content or mod cannot have caused this to the launcher, as it is a separate app . Nor could deleting EU4 have fixed it as it resides in a different place.


For the launcher problem Please try this:

- uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.

Delete the following folders if still present:

- C:/users/{userName}/AppData/Local/Programs/Paradox Interactive/
- C:/users/{userName}/AppData/Local/Paradox Interactive/
- C:/users/{userName}/AppData/Roaming/Paradox Interactive/launcher-v2/
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.

- exit the Steam app entirely
- run steam.exe as the Windows Admin user
- run the game from the PLAY button in Steam

IF that doesn't help, in this folder are some .log files:
C:/users/{userName}/AppData/Local/Paradox Interactive/l... Read more

The 1638 errors there mean there are still remnants of the launcher installed.

You can use this MS tool to clear the stuck install/uninstall:

Fix problems that block programs from being installed or removed - Microsoft Support

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. ... Read more

Ah, that is usually an antivirus app getting in the way. What antivirus app do you use? You need to make sure all these apps are in its exceptions lists:

stellaris.exe and dowser.exe (in the Steam Stellaris folder)
C:/users/{username}/AppData/Local/Programs/Paradox Interactive/launcher-v2.2023.6/paradox launcher.exe
C:/users/{username}/AppData/Local/Programs/Paradox Interactive/bootstrapper-v2.exe

IF that doesn't help, also set each of those .exe files (EXCEPT stellaris.exe !) to run as the Windows Admin user.

Then the game should run from Steam/our launcher, and enable all the DLCs.


IF that still doesn't help, Right click on Documents in the left column of File Explorer, just under This PC there. Go to properties, location. What does it say in there?  

Kriegsspieler said: I just want to tag onto this thread and report that I too am having trouble with the launcher. It has been months since I last played ck3, and the first thing that happened when I started, of course, was that I was asked to close and install the new launcher. (I also installed a bunch of new mods, if that makes any difference, which I suspect doesn't). When I restarted the game, everything went fine, but after exiting the game, Steam thought the game was still running. I tried closing the game using the "stop" function in Steam, but that just hung up on "Stopping." All that was left at that ...

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Texa-Glorious said: can launch ck3.exe, but aow4.exe gives error message "EOS_ Invalid Auth"

That should be fixed in an update to the Epic version a day or two ago. Did you get that?


As for the launcher issue with CK3, I'm not sure what could cause that. Please try this:

- uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.

Delete the following folders if still present:

- C:/users/{userName}/AppData/Local/Programs/Paradox Interactive/
- C:/users/{userName}/AppData/Local/P... Read more

I can't see why that one building thinks it is on a separate grid.

What if you delete it and re-build it?  

Ujin said: Primarily because EU4 can't multi-core

That is not true.  

You might check with Epic, but I think its normal and WaD.  

Ujin said: 5700G is an APU but its performance is +- GTX 1050 and what does that mean?

I don't see that in that page? But APU means it's an integrated video system

...

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Mod errors in that log; please disable ALL mods while we work on this.

Dragazhar said: Crashed after opening Stellaris.exe properties and ticking Disable fullscreen optimizations in Compatibility tab and going in the launcher to change to fullscreen. turn Vsync off and cap framerate

That pdx_settings.txt shows borderless, try fullSCreen there. Any better? After that can we get a new pdx_settings.txt AND the settings.txt , thanks.

...

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If this worked on your old machine but not the new one, it is clearly not a bug in our game or launcher! It is absolutely the responsibility of Xbox to get items in your Xbox account online installed on your PC, we are simply not involved in that process.


I did get this from one affected Gamepass user:

In case anyone else had issues when they purchased the season pass from gamepass.
The season pass shows no downloads and the dlc by itself looks like you need to purchase it.
Click the dlc and click the purchase.
It’ll change and say you own this already.
Click the same box that now says you own this already and it’ll ask you to download it.
Do the download and boom it finally adds
You need to do it for all DLC downloads.

Please let us know if that... Read more

Please don't update old threads like this. Thanks.  

Can you run those games from ck3.exe and aow4.exe directly from File Explorer?  

Assuming you are on Apple Silicon, this will be the problem discussed here:

Surviving Mars - macOS Ventura fails to launch

Description macOS Ventura fails to launch Mac Steam What is your game version? can't launch app, ... Read more

I'm afraid we can't do that! When you post there you get to fill out a form to make sure that QA get all the info they need.  

Steam cloud saves are visible here:

Sign In

store.steampowered.com ... Read more

That means that either there is some app or utility running under the original user ID causing this to the game, or that profile is corrupted.

When running as that ID disable all startup utilities and apps you can then reboot. Does the problem still happen?  

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  

That report shows you have 13.2.1 not 13.3.1 - or is it that you have updated since your OP?