crash on start up fresh install

General Feedback & Requests
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1

looking all over for a fix here, getting crash on start up with 5.6.0 and 5.5.4 no projects created yet havent gotten it too load up a single time with this PC used the Nvidia panel to install the game ready and the studio drivers no luck and have completely uninstalled and reinstalled engines and epic games launcher multiple times . no virus protection besides windows security.

this is the error list i get on start up
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000040

nvwgf2umx
nvapi64
GFSDK_Aftermath_Lib_x64
GFSDK_Aftermath_Lib_x64
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_RHI
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

my build is RTX 5070
Ryzen 7 9800X3D 8-Core Processor 4.70 GHz
32GB RAM

any feedback would be greatly appreciated thank you.

2

Hi,
I bet you have already tried to:

  1. “Verify” the Installation on the Epic Games launcher,
  2. Tried to running them as Adminstrator and
  3. checked if the “DefaultEngine.ini” file is inside the AppData/Local/UnrealEngine/…/Config folder.

This help is for the Epic Games Launcher and their UE-Games, but maybe it can be reproduced on your system… but installing latest BIOS is something I would not recommend to the normal User:

https://www.epicgames.com/help/en-US/c-Category_TechnicalSupport/c-TechnicalSupport_GeneralSupport/ue-crash-nvwgf2umx-a000087290

I hope someone can give you a detailed answer :grinning_face:

3

yeah i tried all the tricks in the link that was posted and i also updated the bios. still getting the same errors when crashing on start up. i have noticed if i try to launch the engine from the library tab in the epic store front i get this error code: LS-0013

4

so i was only running unreal engine in Admin i started the epic games launcher in admin as well now i no longer get the LS-0013 error and im getting more info on the start up crash now

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000040

nvwgf2umx
nvapi64
GFSDK_Aftermath_Lib_x64
GFSDK_Aftermath_Lib_x64
UnrealEditor_D3D12RHI!UE::RHICore::Nvidia::Aftermath::D3D12::RegisterResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12NvidiaExtensions.cpp:263]
UnrealEditor_D3D12RHI!FD3D12Resource::FD3D12Resource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Resources.cpp:135]
UnrealEditor_D3D12RHI!FD3D12Adapter::CreatePlacedResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Resources.cpp:998]
UnrealEditor_D3D12RHI!FD3D12PoolAllocator::CreatePlacedResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12PoolAllocator.cpp:485]
UnrealEditor_D3D12RHI!FD3D12PoolAllocator::AllocateResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12PoolAllocator.cpp:403]
UnrealEditor_D3D12RHI!FD3D12PoolAllocator::AllocDefaultResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12PoolAllocator.cpp:305]
UnrealEditor_D3D12RHI!FD3D12DefaultBufferAllocator::AllocDefaultResource() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Allocation.cpp:1567]
UnrealEditor_D3D12RHI!FD3D12Adapter::AllocateBuffer() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Buffer.cpp:200]
UnrealEditor_D3D12RHI!ConstructItems<TRefCountPtr,TRefCountPtr,int>() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12RHICommon.h:207]
UnrealEditor_D3D12RHI!FD3D12Adapter::CreateRHIBuffer() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Buffer.cpp:236]
UnrealEditor_D3D12RHI!FD3D12RayTracingCompactionRequestHandler::FD3D12RayTracingCompactionRequestHandler() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12RayTracing.cpp:737]
UnrealEditor_D3D12RHI!FD3D12Device::SetupAfterDeviceCreation() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Device.cpp:412]
UnrealEditor_D3D12RHI!FD3D12Adapter::InitializeDevices() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Adapter.cpp:1378]
UnrealEditor_D3D12RHI!FD3D12DynamicRHI::Init() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\Windows\WindowsD3D12Device.cpp:1382]
UnrealEditor_RHI!RHIInit() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\DynamicRHI.cpp:322]
UnrealEditor!FEngineLoop::PreInitPreStartupScreen() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:2971]
UnrealEditor!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:143]
UnrealEditor!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:128]
UnrealEditor!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282]
UnrealEditor!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:339]
UnrealEditor!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

5

Hey there @Victor4399! This error references the Nvidia dll file nvwgf2umx.dll there’s been some issues with recent driver releases, so I’d recommend trying to backdate the drivers if possible. If that doesn’t work, there’s a small collection of workarounds and (a couple of) fixes to some related issues with that dll.

6

Thank you i really appreciate it. i rolled back to a Nvidia Driver from march and UE launched and worked perfectly. thanks for taking the time too respond.

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