Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000001c65bc205d0

please help, I see this error and unreal engine crashes every time after loading into the editor for 1-2 mins and its so annoying that im not able to complete first 10 minutes of a tutorial video from youtube
im working on unreal engine 5.1 latest version
Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000001c65bc205d0

0x00007ffd7d263436 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7d0a03d2 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4caab3 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4c9460 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4c8e16 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4dd584 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4bee11 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4bdefb nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4bbb5c nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4cfe53 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4d0ff7 nvwgf2umx.dll!UnknownFunction []
0x00007ffd7e4ecc78 nvwgf2umx.dll!UnknownFunction []
0x00007ffdd1905381 D3D12Core.dll!UnknownFunction []
0x00007ffdd1904c8c D3D12Core.dll!UnknownFunction []
0x00007ffe0cf81c1d dxgi.dll!UnknownFunction []
0x00007ffe0cf8443d dxgi.dll!UnknownFunction []
0x00007ffe0cf30167 dxgi.dll!UnknownFunction []
0x00007ffe0cf03b8f dxgi.dll!UnknownFunction []
0x00007ffe0cf038ea dxgi.dll!UnknownFunction []
0x00007ffe0cf13f59 dxgi.dll!UnknownFunction []
0x00007ffe0cf130e0 dxgi.dll!UnknownFunction []
0x00007ffe0cf33836 dxgi.dll!UnknownFunction []
0x00007ffd8e2a612d UnrealEditor-D3D12RHI.dll!UnknownFunction []
0x00007ffd8e2a5b21 UnrealEditor-D3D12RHI.dll!UnknownFunction []
0x00007ffd8e2a8b24 UnrealEditor-D3D12RHI.dll!UnknownFunction []
0x00007ffded04bc7e UnrealEditor-RHI.dll!UnknownFunction []
0x00007ffded044fa5 UnrealEditor-RHI.dll!UnknownFunction []
0x00007ffded012927 UnrealEditor-RHI.dll!UnknownFunction []
0x00007ffded0529f4 UnrealEditor-RHI.dll!UnknownFunction []
0x00007ffdc470257d UnrealEditor-Core.dll!UnknownFunction []
0x00007ffdc4702ace UnrealEditor-Core.dll!UnknownFunction []
0x00007ffdcbae33b2 UnrealEditor-RenderCore.dll!UnknownFunction []
0x00007ffdc4e23a52 UnrealEditor-Core.dll!UnknownFunction []
0x00007ffdc4e1b860 UnrealEditor-Core.dll!UnknownFunction []
0x00007ffe110426bd KERNEL32.DLL!UnknownFunction []
0x00007ffe1248dfb8 ntdll.dll!UnknownFunction []
Crash in runnable thread RHIThread

1 Like

This error message suggests that there is a problem with the graphics driver or the GPU. The error “EXCEPTION_ACCESS_VIOLATION reading address 0x000001c65bc205d0” usually indicates that Unreal Engine is trying to access memory that it is not allowed to access. It could be caused by a problem with the GPU driver or the GPU itself.

Try these steps to fix this issue:

  • Make sure that you have the latest GPU drivers installed for your graphics card. You can download the latest drivers from the website of the GPU manufacturer (NVIDIA, AMD, etc.).
  • Try disabling any third-party software that may be interfering with the GPU, such as overclocking software or other system monitoring tools.
  • Disable any custom graphics settings in your game or in the Unreal Engine editor, such as custom resolution or anti-aliasing settings.
  • Check for any other software that may be conflicting with Unreal Engine, such as other game engines or graphics-intensive software.
  • Try running the game or the editor on a different machine to see if the problem is specific to your current setup.

It’s also worth noting that this error could be caused by a hardware problem with the GPU, such as overheating or a malfunctioning component. In this case, it may be necessary to replace the GPU.

3 Likes

it has not happened again till now so ig its solved thanks for your support

2 Likes

I have the same issue… I use the latest nvidia studio driver and still getting this error even though i tried what Elias Wick suggested… Thanks for your help

1 Like

I suggest you try to restart your PC, and have no other applications open when running Unreal Engine for some time to see if it resolves the issue.

2 Likes

Awesome! Please feel free to mark this as resolved, if the issue is resolved! :slight_smile:

2 Likes

Hi:
When playing Train Sim World 2 and Bus Simulator 21, one through Epic and the other with Steam, I always end up with this error that prevents me from playing, crashing the game… does anyone know how to fix it? Thanks in advance!
Buenas:
Al jugar Train Sim World 2 y Bus Simulator 21, uno a través de Epic y el otro con Steam, siempre acaba saliendo este error que me impide jugar, crasheando el juego… alguien sabe como solucionarlo? Gracias de antemano!
LoginId:99854a0348f05aa10a44b5bc0b6915f3
EpicAccountId:3535f503fb894d009ca346aa6ac3c7da

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000000046bad9f08

BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
BusSimulator21_Win64_Shipping
kernel32
ntdll

2 Likes

LoginId:29732d3d44914c476b59bfb0fd696c5d
EpicAccountId:28adef77d90f43a3aeaef760170f4f96

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x000000b7537b0d00

UnrealEditor_Renderer!TRDGLambdaPass<FFogPassParameters,<lambda_6b25ed1cc5cb4ac6f03f256a3de5d326> >::TRDGLambdaPass<FFogPassParameters,<lambda_6b25ed1cc5cb4ac6f03f256a3de5d326> >() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Public\RenderGraphPass.h:588]
UnrealEditor_Renderer!FDeferredShadingSceneRenderer::RenderFog() [D:\build++UE5\Sync\Engine\Source\Runtime\Renderer\Private\FogRendering.cpp:395]
UnrealEditor_Renderer!FDeferredShadingSceneRenderer::Render() [D:\build++UE5\Sync\Engine\Source\Runtime\Renderer\Private\DeferredShadingRenderer.cpp:3901]
UnrealEditor_Renderer!RenderViewFamilies_RenderThread() [D:\build++UE5\Sync\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:4413]
UnrealEditor_Renderer!<lambda_3332acdaafdbf3c437080709986d7e10>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:4681]
UnrealEditor_Renderer!TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamilies'::87’::FDrawSceneCommandName,<lambda_3332acdaafdbf3c437080709986d7e10> >::DoTask() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Public\RenderingThread.h:209]
UnrealEditor_Renderer!TGraphTask<TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamilies'::87’::FDrawSceneCommandName,<lambda_3332acdaafdbf3c437080709986d7e10> > >::ExecuteTask() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:1310]
UnrealEditor_Core!FNamedTaskThread::ProcessTasksNamedThread() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:758]
UnrealEditor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:649]
UnrealEditor_RenderCore!RenderingThreadMain() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:416]
UnrealEditor_RenderCore!FRenderingThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:542]
UnrealEditor_Core!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableT

1 Like

What worked for what was crashing our project was to rewrite the engine.ini file to open another map and re-calibrate textures upon opening. I believe changing any of the Resolution settings (like r.ReflectionCaptureResolution) will force that recalibration.

1 Like

I have tried everything please help…

Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000029131a20000

0x00007ff84a6d142a VCRUNTIME140.dll!UnknownFunction
0x00007ff64be77c99 Wonderlands.exe!UnknownFunction
0x00007ff64cf6f489 Wonderlands.exe!UnknownFunction
0x00007ff64e50d49a Wonderlands.exe!UnknownFunction
0x00007ff64c64efd4 Wonderlands.exe!UnknownFunction
0x00007ff64be8d1b6 Wonderlands.exe!UnknownFunction
0x00007ff64e51472b Wonderlands.exe!UnknownFunction
0x00007ff64e51d8cd Wonderlands.exe!UnknownFunction
0x00007ff64e51b417 Wonderlands.exe!UnknownFunction
0x00007ff64cf7eadb Wonderlands.exe!UnknownFunction
0x00007ff64bdebc99 Wonderlands.exe!UnknownFunction
0x00007ff64bdf140e Wonderlands.exe!UnknownFunction
0x00007ff64bdf148a Wonderlands.exe!UnknownFunction
0x00007ff64bdfac19 Wonderlands.exe!UnknownFunction
0x00007ff64f48d44a Wonderlands.exe!UnknownFunction
0x00007ff8665c7344 KERNEL32.DLL!UnknownFunction
0x00007ff8668c26b1 ntdll.dll!UnknownFunction

I have updated windows, graphics card drivers, tried starting without any other applications except unreal and epic games and steam. Tried running it in dx11… nothing…

also just did sfc /scannow still not working.

2 Likes

In my case, it was caused by using GEngine->AddOnScreenDebugMessage() without an if check in a constructor. I don’t know detail.

summary indormmation:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000eb8

UnrealEditor_Engine!UEngine::AddOnScreenDebugMessage()[~]
UnrealEditor_SteamTest!UMyHomeMenu::UMyHomeMenu()[~\MyHomeMenu.cpp:19]
...

MyHomeMenu.cpp:19

GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Red, TEXT("SubsystemName is NULL."));

resolve

if (GEngine) {
    GEngine->AddOnScreenDebugMessage(-1, 15.f, FColor::Red, TEXT("SubsystemName is NULL."));
}
2 Likes

i’ve the same problem excepted this:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000028

nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
D3D12Core
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

Please help me

4 Likes

I’m having the same problem!

2 Likes

LoginId:02476da641ae8eadba26b2b33411c42c
EpicAccountId:8b52a53a8d74418e8bc225f6effc8c3b

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000002200000044

ucrtbase
ucrtbase
ucrtbase
EpicGamesLauncher
EpicGamesLauncher
EpicGamesLauncher
EpicGamesLauncher
EpicGamesLauncher
EpicGamesLauncher
kernel32
ntdll

I need help

2 Likes

I have been facing a similar issue on my workstation from past six months. It started to occur when I was working on a project with Metahumans. So I thought it has something to do with Metahumans. But it slowly started to occur on other projects as well. It even happens with the Epic Games Launcher. And eventually I started to get BSOD errors on windows with a similar error code.

I have tried the following fixes but nothing has fixed it so far.

  • Driver updates
  • GPU driver updates
  • GPU swap (RTX A5000 to RTX A6000)
  • OS updates
  • OS reinstall
  • RAM Tests (No issues found)
  • Disk Tests (No issues found)

Please help me resolve this issue.

1 Like

hi. how can i fix this errore EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000028?

2 Likes

Unfortunately that doesn’t say much. When does the error happen?

1 Like

I have got the same crash on startup issue as @drakesnake here in detail

LoginId:f4df2d11468844d4a64c3398adc85c6d
EpicAccountId:d32dd00b11ec4385a0315d8c7b8d9376

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000028

nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
D3D12Core
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
NahimicOSD
UnrealEditor_D3D12RHI!FD3D12Viewport::PresentChecked() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:661]
UnrealEditor_D3D12RHI!FD3D12Viewport::Present() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:732]
UnrealEditor_D3D12RHI!FD3D12CommandContextBase::RHIEndDrawingViewport() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:933]
UnrealEditor_RHI!FRHICommand<FRHICommandEndDrawingViewport,FRHICommandEndDrawingViewportString2188>::ExecuteAndDestruct() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Public\RHICommandList.h:1295]
UnrealEditor_RHI!FRHICommandListBase::Execute() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:477]
UnrealEditor_RHI!FRHICommandListImmediate::ExecuteAndReset'::35’::<lambda_4>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:788]
UnrealEditor_RHI!TGraphTask<TFunctionGraphTaskImpl<void __cdecl(void),0> >::ExecuteTask() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:1235]
UnrealEditor_Core!FNamedTaskThread::ProcessTasksNamedThread() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:758]
UnrealEditor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:649]
UnrealEditor_RenderCore!FRHIThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:330]
UnrealEditor_Core!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:149]

1 Like

Hey! This is a bit more helpful, but still too vague.

In essence, you get warnings about the graphics card. The dxgi is a set of components for rendering graphics and managing display devices. Then you also get a warning about NahimicOSD which is a sound enhancement software usually with laptops.

What I would do is to - Verify that the drives on your PC is properly installed or updated. If this is particular to when you do something, a file could be corrupt. You could try to move all your files to a new project to see if that helps with the development.

1 Like

So, I should try DDU installation for my graphics card? Because even with my newest driver I got this issue.

1 Like