UEFN Crash prior to selecting a project. Unable to launch.

General Issues and Bug Reporting
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1

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Assets

Summary

After the most recent patch I consistent get both:

“Fatal error: [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 253]
Ran out of memory allocating 48 (0.0 MiB) bytes with alignment 1807115696. Last error msg: The operation completed successfully…”

and

“Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x0000000000000000”

Attempting to launch UEFN results in one of those two errors.

Logs:

[2024.03.20-17.09.42:608][  0]LogSkeletalMesh: Building Skeletal Mesh Face_Archetype...
[2024.03.20-17.09.42:633][  0]LogSkeletalMesh: Display: Waiting for skinned assets to be ready 0/1 (Face_Archetype) ...
[2024.03.20-17.09.43:390][  0]LogSkeletalMesh: Display: /MetaHuman/IdentityTemplate/Face_Archetype.Face_Archetype ComputeTangents MikkTSpace function: Compute a zero length normal vector.
[2024.03.20-17.09.44:000][  0]LogMemory: Warning: Freeing 33554432 bytes (32.0 MiB) from backup pool to handle out of memory.
[2024.03.20-17.09.44:000][  0]LogMemory: Warning: MemoryStats:
	AvailablePhysical 52491653120 (48.89 GiB)
	 AvailableVirtual 181579829248 (169.11 GiB)
	     UsedPhysical 5511704576 (5.13 GiB)
	 PeakUsedPhysical 5797314560 (5.40 GiB)
	      UsedVirtual 7015587840 (6.53 GiB)
	  PeakUsedVirtual 7507927040 (6.99 GiB)
[2024.03.20-17.09.44:000][  0]Allocator Stats for Mimalloc: (not implemented)
[2024.03.20-17.09.44:000][  0]LogWindows: Error: appError called: Fatal error: [File:D:\build\++Fortnite\Sync\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 253] 
Ran out of memory allocating 24 (0.0 MiB) bytes with alignment 1128418960. Last error msg: The operation completed successfully..



[2024.03.20-17.09.44:000][  0]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2024.03.20-17.09.44:200][  0]LogThreadingWindows: Error: Runnable thread Background Worker #23 crashed.
[2024.03.20-17.09.44:200][  0]LogWindows: Error: === Critical error: ===
[2024.03.20-17.09.44:200][  0]LogWindows: Error: 
[2024.03.20-17.09.44:200][  0]LogWindows: Error: Fatal error: [File:D:\build\++Fortnite\Sync\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 253] 
[2024.03.20-17.09.44:200][  0]LogWindows: Error: Ran out of memory allocating 24 (0.0 MiB) bytes with alignment 1128418960. Last error msg: The operation completed successfully..
[2024.03.20-17.09.44:200][  0]LogWindows: Error: 
[2024.03.20-17.09.44:200][  0]LogWindows: Error: 
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff663469a3d UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff66347f6a3 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff6634be3ef UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff6634bf88f UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff66345e248 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff657f8ae59 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff659fc9aca UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff659fc9491 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff659fc953c UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff65d0bc189 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff65d0bdc5c UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff65a019530 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff657dba044 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff6636c4c79 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff6636c7c76 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff657e3ea85 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff663445e70 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff66342e590 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff6634c4d34 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff663681bf7 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ff663681a19 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: [Callstack] 0x00007ffb568b7344 KERNEL32.DLL!UnknownFunction []
[2024.03.20-17.09.44:200][  0]LogWindows: Error: 
[2024.03.20-17.09.44:200][  0]LogWindows: Error: Crash in runnable thread Background Worker #23
[2024.03.20-17.09.44:210][  0]LogExit: Executing StaticShutdownAfterError
[2024.03.20-17.09.44:212][  0]LogWindows: FPlatformMisc::RequestExit(1, FRunnableThreadWin::GuardedRun.ExceptionHandler)
[2024.03.20-17.09.44:212][  0]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, FRunnableThreadWin::GuardedRun.ExceptionHandler)
[2024.03.20-17.09.44:212][  0]LogCore: Engine exit requested (reason: Win RequestExit)

Tried:
Windows Memory Test
Rebooting PC
Starting epic launcher as admin
Reinstalled UEFN

Steps to Reproduce

Just starting up UEFN on my system.

Expected Result

UEFN works

Observed Result

It doesn’t

Platform(s)

PC

2

The status of FORT-723779 incident has been moved from ‘Needs More Info’ to ‘Closed’. Resolution Reason: ‘Unresolved’

1 Like
3

The status of FORT-723780 incident has been moved from ‘Needs Triage’ to ‘Needs More Info’.

1 Like
4

This is happening to me as well. I can not get into UEFN at all. It keeps crashing at 73%.

I am getting this in the crash reports log.

LoginId:4954345e4456241c5a97ceb1a15296b1
EpicAccountId:e3586bd17dfe4a02b9d1441a36a2fd5a

Fatal error: [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 253]
Ran out of memory allocating 48 (0.0 MiB) bytes with alignment 1576543664. Last error msg: The operation completed successfully…

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

I really need to get into UEFN too.

5

Hi @DonnySC

Could you DM me your project and logs so we can take a look?

1 Like
6

A fix was given to me through twitter which involves replacing your local files with the local files of a fresh download on another device.
Removing/renaming the local files and then having them installed by the client on the same device would NOT work.

They are the files found in C:\Users(AccountName)\AppData\Local

1 Like
7

Thank you, Donny!

1 Like