Possible Crash When Starting UEFN

General Announcements
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1

We are aware that some Fortnite developers may experience a crash when starting UEFN. We will let you know when we have more information or a fix.

As a temporary solution please try the following:

  • Inside the Epic Games Launcher, navigate to the Fortnite client menu with the ellipse (…)

  • Go to “Options”

  • Ensure “High Resolution Textures” is checked

  • Click “Apply”

2

hi All,

Please check Epic Games Public Status before trying to start/install the new version 38.00 of UEFN.

If your UEFN crash is like

================================================================

Fatal error: [File:Z:\UEVFS\Root\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 823]

Rendering thread exception:
Fatal error: [File:Z:\UEVFS\Root\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp] [Line: 248]

Failed to find parameter collection buffer with GUID ‘8CC222B44C6842ABBBD7B5A51B4DECE7’ for /Game/TimeOfDay/TODM_Sequence/Materials/Sky/MI_UEFN_Sky_Ch5.MI_UEFN_Sky_Ch5.
Currently 5 listed default instances:
0x000001DCD6B76990: MPC_UIKit_InputFieldCaretColor: 4276CB2D41D48DFD7AE477B6AAB71B67
0x000001DCCCFA3240: MPC_Water: B5A9ACFF4B0499E786A4F981E5B966F6
0x000001DCCD42D9B0: FortniteMaterialParameters: A49449A349668D6F22FD2DA33BB9124E
0x000001DCCD4232A0: Stencil_ID_Definitions: 044A64DD437E451F386E4F8EE322E501
0x000001DD44B800F0: MPC_FrontendUI: 7A32DC7A4DF6A575A68D2C899F3636A5

The line

0x00007ffb110247bf UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction

repeats many times

==============================================================

Please follow the past post above, changing the UEFN High Resolution Textures setting in the Epic Games Launcher

After several attempts to log in, UEFN crashed and fell back into the Epic Games launcher… then the EG Launcher WINDOW 11 app closed and could not log in

UEFN will not install correctly from the Launcher on any Windows 11 (eleven) version that needs to run Elevated "Run As Administrator - General / Issues and Bug Reporting

If UEFN 38.00 experiences random crashes. Please uninstall 37.** and install a new version of 38.00. Afterwards, use verify, as occasionally in the past, this has resolved the issue.

Please wait until the Epic Games Public Status shows all green before attempting to complete the UEFN 38.00 installation, possibly using the information provided in the post above.

Fortnite Login Issues

Resolved - This incident has been resolved.
Nov 2, 03:20 UTC

Follow the original post 1 procedure above before trying to use 38.00 UEFN

Please don’t add random posts on operational problems on this forum

Epic Launcher and UEFN down - General / Issues and Bug Reporting - Epic Developer Community Forums

Please follow the Known Problems thread

Fortnite Ecosystem 38.00 Known Issues Thread - General / Announcements - Epic Developer Community Forums

by setting the status at the bottom of the page from the default

“You will be notified if someone mentions your @name or replies to you.”

And in the drop-down, selecting “Watching” will give the thread status

“You will receive notifications because you are watching this topic”

3

Hi @Flak ; @Jimbohalo10

This workaround worked for me. Thanks so much!

1 Like