UEFN crashes on launch

General Issues and Bug Reporting
, ,
1

Summary

Recent #UEFN updates have rendered my laptop incapable of launching the app. Right as it’s about to start, UEFN closes and throws up a crash reporter with:

GPU Crash Dump Triggered
UnrealEditorFortnite_Win64_Shipping (x39 times)
kernel32
ntdll

Remedies tried: :thread:
ran as Admin
set Win8 compatibility mode
-dx11 command line arg
-dx12 command line arg
-sm5 command line arg
-sm3.1 command line arg
verify UEFN files
uninstall/reinstall UEFN
install dx 12 shaders
updated gpu drivers
downgraded gpu drivers
updated gpu drivers
updated windows
factory reset laptop
reinstalled windows
reinstalled launcher
reinstalled UEFN
deleted UEFN intermediate, saved, config files
Mange 3D settings–>UEFN = High Performance NVIDIA Processor
Regedit -->TdrDelay = 60
Regedit -->TdrDdiDelay = 60
Deleted pak files, verified installation

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

Open Launcher
Click Icon for Unreal Editor for Fortnite

Expected Result

UEFN runs

Observed Result

UEFN closes and throws up a crash reporter with:

GPU Crash Dump Triggered
UnrealEditorFortnite_Win64_Shipping (x39 times)
kernel32
ntdll

Platform(s)

Win 11 PC

2

omg! same problem. ive tried every method on the web but nothing seems to work. did you find a fix?

3

My Nvidia card needs 300 minimum to 500 for an early Nvidia graphics card
Regedit -->TdrDelay = 600

Then follow an old post
[RESOLVED] Issue with New Installations of UEFN - General / Announcements - Epic Developer Community Forums

dont use -dx12 -sm6
use -dx11 -sm5 UEFN does not NEED tDX12 his and dont use NVidia SLI or DLSS.

Ue5.5 UEFN does not support the and the support has been removed

finally try
Any version crash!!! - Development / Programming & Scripting - Epic Developer Community Forums

There is a patch in Latest EPGL Launcher 17.1 gives UEFN 32.11

1 Like
4

I finally fixed this, yes. I have now fixed 3 identical machines that had this issue. (HP Victus Laptops.)

You can read about the whole thing here:

In short: Had to go into the BIOS and force the machine to use the GPU rather than the integrated graphics hardware.

2 Likes
6

i also have a victus gaming laptop! thanks for the fix!