: Switch from DirectX 11 to DirectX 9 or OpenGL via the launcher settings.
Since HOI4 is 32-bit, it needs contiguous memory. Windows often limits this.
Provide these details so we can find a targeted solution for your setup.
Minimal reproducible test
: A community-made Millennium Dawn Crash Fix is available on the Steam Workshop to address market access file errors that plague older versions.
: Disable "3D Buildings," "3D Units," and "Reflections" in the in-game options menu. 5. Adjust Gameplay Settings to Prevent Late-Game Crashes
Turn off 3D unit models. Use NATO counters. hoi4 millennium dawn crash fix 2021
Some users have found that disabling the Arms Against Tyranny DLC permanently fixed their random crashes in MD.
Navigate to Documents/Paradox Interactive/Hearts of Iron IV/settings.txt . Find render_driver= and change it from directx11 to opengl . Save the file and set it to (Right-click > Properties) so the launcher doesn't revert it.
Tips specific to 2021 issues
If your game runs fine in 2016 but crashes in 2020, it is a memory leak issue.
— End of report.