🎮 Game Error Codes What it means & how to fix it

Mistfall Hunter Fatal Error — 'UE-MistfallHunter Game Has Crashed and Will Close'

Mistfall Hunter (Bellring Games, launched 29 July 2026) runs on Unreal Engine 5, so its main crash is the 'UE-MistfallHunter Game Has Crashed and Will Close' fatal error — it hits right after you press Play, on the UE startup/compiling-shaders screen, or mid-match. The single fix most players miss: Windows Exploit Protection's Mandatory ASLR conflicts with the UE5 executable. Here's each cause and the fastest fix.

Error codes

'UE-MistfallHunter Game Has Crashed and Will Close' (fatal error on launch) Unreal Engine 5 threw a fatal error before or during startup

Cause: Windows Exploit Protection (Mandatory ASLR) conflicting with the UE5 executable is a confirmed cause on many rigs; missing Visual C++ runtimes and overclocks are the others.

Fix:
  1. Open Windows Security -> App & browser control -> Exploit protection settings -> Program settings, add the Mistfall Hunter .exe and set 'Force randomization for images (Mandatory ASLR)' to Off for that program.
  2. Install the latest Microsoft Visual C++ Redistributables (x86 and x64) — Mistfall Hunter needs them and missing versions surface as UE fatal errors.
  3. Turn off any CPU/GPU overclock (including XMP/EXPO stress and MSI Afterburner curves) — overclocks destabilise UE5 during shader compilation.
Crash on the 'Compiling Shaders' / startup screen The game dies while building the shader cache

Cause: Outdated GPU driver or a corrupted shader cache.

Fix:
  1. Update your GPU driver with a clean install (DDU, then latest Nvidia/AMD).
  2. Delete the game's shader cache in %LOCALAPPDATA% and clear the DirectX Shader Cache via Disk Cleanup, then relaunch and let it rebuild.
  3. Verify the integrity of the game files in Steam.
Random mid-session crash to desktop The game vanishes with no error mid-match

Cause: Thermal/VRAM pressure, overlays, or antivirus interference.

Fix:
  1. Cap the frame rate and lower texture/shadow settings a notch to reduce VRAM and thermal load.
  2. Disable Discord/Steam/GeForce overlays and add the game to your antivirus exceptions.
  3. Monitor GPU temps; if it crashes under load, undervolt or improve case airflow.

Fixes that work for most Mistfall Hunter (PC / Steam) errors

  1. Verify/repair the game files (Steam: Properties -> Installed Files -> Verify integrity) — this replaces corrupted files behind most UE5 fatal errors.
  2. Clean-install the latest GPU driver with DDU, and install the latest Microsoft Visual C++ Redistributables (x86 and x64) plus the DirectX End-User Runtime — stale drivers and missing runtimes cause most UE5 launch crashes.
  3. Clear the DirectX Shader Cache (Disk Cleanup) and delete the game's local shader/cache folder in %LOCALAPPDATA%, then relaunch so it rebuilds.
  4. Disable overlays (Steam, Discord, GeForce Experience) and any third-party antivirus/VPN, and run the game as administrator.

FAQ

Is 'UE-MistfallHunter Game Has Crashed' a virus or a broken install?

Neither — it's Unreal Engine 5's generic fatal-error wrapper. It usually points to the Mandatory ASLR conflict, missing VC++ runtimes, an overclock, or a stale GPU driver, not a corrupted download.

Why does turning off Mandatory ASLR help?

Windows' Exploit Protection can force address-space randomisation on the UE5 executable in a way it isn't built for, causing an immediate fatal error on launch. Excluding the game's .exe from Mandatory ASLR is a confirmed fix.

Other games