Strange mini Window showing when hovering over top task bar, then crashes unreal.

Development Programming & Scripting
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1

Hi,

I’m new to unreal, I am starting a new project on an RTX 5090, so I presume the performance should be great. However, whenever I hover over the top task bar, it creates a mini artifact window, which then crashes my unreal. I have tried changing to dx11 which has the same issues. I am getting this error code:

Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000028

0x00007ffe4f82f9a6 nvwgf2umx.dll!UnknownFunction
0x00007ffe4f841d40 nvwgf2umx.dll!UnknownFunction
0x00007ffe4fb80e87 nvwgf2umx.dll!UnknownFunction
0x00007ffe4fc6f997 nvwgf2umx.dll!UnknownFunction
0x00007ffe4fc7fc6b nvwgf2umx.dll!UnknownFunction
0x00007ffe4fc7fa02 nvwgf2umx.dll!UnknownFunction
0x00007ffd6c214030 D3D12Core.dll!UnknownFunction
0x00007ffe5e1513c0 dxgi.dll!UnknownFunction
0x00007ffe5e0db79b dxgi.dll!UnknownFunction
0x00007ffe5e0d9569 dxgi.dll!UnknownFunction
0x00007ffe5e0c0397 dxgi.dll!UnknownFunction
0x00007ffe5e0b33f4 dxgi.dll!UnknownFunction
0x00007ffe5e0b2b9a dxgi.dll!UnknownFunction
0x00007ffd6c5115a0 UnrealEditor-D3D12RHI.dll!FD3D12Viewport::PresentInternal() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\Windows\WindowsD3D12Viewport.cpp:368]
0x00007ffd6c5113a2 UnrealEditor-D3D12RHI.dll!FD3D12Viewport::PresentChecked() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:506]
0x00007ffd6c511093 UnrealEditor-D3D12RHI.dll!FD3D12Viewport::Present() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:567]
0x00007ffd6c512e92 UnrealEditor-D3D12RHI.dll!FD3D12CommandContextBase::RHIEndDrawingViewport() [D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:756]
0x00007ffd8c330ef8 UnrealEditor-RHI.dll!FRHICommand<FRHICommandEndDrawingViewport,FRHICommandEndDrawingViewportString2359>::ExecuteAndDestruct() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Public\RHICommandList.h:1471]
0x00007ffd8c32ec4a UnrealEditor-RHI.dll!FRHICommandListBase::Execute() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:429]
0x00007ffd8c35acc7 UnrealEditor-RHI.dll!FRHICommandListExecutor::FTranslateState::Translate() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:906]
0x00007ffd8c3176e7 UnrealEditor-RHI.dll!FRHIComputeCommandList::EndBreadcrumbGPU'::2’::<lambda_1>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:871]
0x00007ffd8c330302 UnrealEditor-RHI.dll!FRHICommandListExecutor::FTaskPipe::Execute() [D:\build++UE5\Sync\Engine\Source\Runtime\RHI\Private\RHICommandList.cpp:627]
0x00007ffd8c3323e6 UnrealEditor-RHI.dll!TGraphTask<TFunctionGraphTaskImpl<void __cdecl(ENamedThreads::Type,TRefCountPtr const & __ptr64),0> >::ExecuteTask() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:634]
0x00007ffd91fc2722 UnrealEditor-Core.dll!UE::Tasks::Private::FTaskBase::TryExecuteTask() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Tasks\TaskPrivate.h:504]
0x00007ffd91fb7d4a UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:779]
0x00007ffd91fb81ee UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:668]
0x00007ffd8c61d8b6 UnrealEditor-RenderCore.dll!FRHIThread::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:269]
0x00007ffd925ec0ad UnrealEditor-Core.dll!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:159]
0x00007ffd925e35cf UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:79]
0x00007ffe622ee8d7 KERNEL32.DLL!UnknownFunction

Crash in runnable thread RHIThread

Any advice will be very much appreciated! Thank you.

2

It has to do with nVidia drivers which are in “sorry state” right now to say the least. My suggestion would be using older version of said drivers which are more stable. I had this exact same issue, on a different card, but “downgrading” my drivers seemed to do the trick. I haven’t had a single crash since.

3

Hey there @Josifweller! Welcome to the community! This is indeed an issue with the way the engine uses the Nvidianvwgf2umx.dll I would agree with Don, backdating of the drivers or swapping to the Studio variant may correct the issue. Alternatively there are other causes of this issue possible, and here’s a thread with some compiled workarounds or fixes:

4

(post deleted by author)

5

Thank you for the response!
I have tried all the past drivers and still seem to be having the exact same issue, I’ve uninstalled unreal and the graphics drivers, tried studio and game, changed to DX11. absolutely nothing is working! absolute nightmare…

6

Thank you for the response!
I have tried all the past drivers and still seem to be having the exact same issue, I’ve uninstalled unreal and the graphics drivers, tried studio and game, changed to DX11. absolutely nothing is working! absolute nightmare… I’ve tried everything on the list to, no idea what’s going wrong.

7

Hmmm, that’s not great considering most of these workarounds and fixes should at minimum get you in engine with a reduced RHI target. I have a vague memory of users having issues with new Slate windows when they appeared, but this was due to an issue with a Linux windows manager (Wayland(?)) and the fact the windows weren’t marked transient by the engine.

Do you happen to have a high DPI monitor? What are your full PC specs (to see if there’s a pattern of issues reported with a part of the environment in relation to hardware). Do older Unreal versions have this issue? (Specifically 4.27?)