[2022] Unable to start EU4 in Steam

If you run eu4.exe directly from File Explorer, does it start up then? If not is any Windows error shown?  

This game does not need any compatibility settings set, it's developed and tested on native Windows 10 and 11.

You mention working on your AV app has helped in the past. Which one do you use? It is possible that every time a new game patch comes out, its new eu4.exe will need to be added to the AV app's exceptions lists.


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 , exceptions.log  

The game is crashing in your AMD video driver:

+++ WER5 +++:
Fault bucket 2007797348385078691, type 5
Event Name: BEX64
Response: Not available
Cab Id: 0

Problem signature:
P1: eu4.exe
P2: 1.0.0.0
P3: 636b72c9
P4: atiumd64.dll_unloaded

which is from 2019. Please:

- uninstall it with this utility https://support.amd.com/en-us/kb-articles/Pages/AMD-Clean-Uninstall-Utility.aspx
- reboot
- install the very latest http://support.amd.com/en-us/download
- reboot again

Good luck!  

I cannot accept any form of payment from you, thanks all the same.

Glad we got there so quickly!