UnrealEditor.exe has exited with code 3221225775 (0xc000012f)

Development Getting Started & Setup
1

I have just migrated from EGS UE5 to Open Source from Github. I have finished building with the Development Editor Win64 configuration but now I get this error when I try to start UnrealEditor.exe: The program '[4632] UnrealEditor.exe' has exited with code 3221225775 (0xc000012f).

Here is the log file:

'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor.exe'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\ntdll.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\kernel32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\KernelBase.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\shell32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\msvcp_win.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\ucrtbase.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Core.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-CoreUObject.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\user32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\win32u.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\gdi32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\gdi32full.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\advapi32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\msvcrt.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\sechost.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-InputCore.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\rpcrt4.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\bcrypt.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\ole32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\combase.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\oleaut32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-MoviePlayer.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\setupapi.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\cfgmgr32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\shlwapi.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-MoviePlayerProxy.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Projects.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-RenderCore.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-RHI.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-ApplicationCore.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Slate.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\imm32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-TraceLog.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-SlateCore.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\ws2_32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-PreLoadScreen.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-InstallBundleManager.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-MediaUtils.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-DerivedDataCache.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\crypt32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-UnrealEd.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-DesktopPlatform.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\comdlg32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\SHCore.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\tbbmalloc.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-BuildSettings.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\winmm.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\vcruntime140.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\vcruntime140_1.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\IPHLPAPI.DLL'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\netapi32.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-HTTP.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\msvcp140.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\version.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\pdh.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Json.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-ColorManagement.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\dwmapi.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\UIAutomationCore.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\dxgi.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\uxtheme.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'C:\Windows\System32\powrprof.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Nanosvg.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-ImageWriteQueue.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Media.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-SignalProcessing.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-Zen.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-SSL.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\libfbxsdk.dll'. 
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-ImageCore.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-AssetRegistry.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-AssetTagsEditor.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-BSPUtils.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-LevelSequence.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-AnimGraph.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-AppFramework.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-CinematicCamera.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-CookMetadata.dll'. Symbols loaded.
'UnrealEditor.exe' (Win32): Loaded 'D:\Unreal Engine\UE_5.4\Engine\Binaries\Win64\UnrealEditor-CurveEditor.dll'. Symbols loaded.
The thread 21028 has exited with code 3221225775 (0xc000012f).
The thread 12928 has exited with code 3221225775 (0xc000012f).
The thread 26440 has exited with code 3221225775 (0xc000012f).
The program '[4632] UnrealEditor.exe' has exited with code 3221225775 (0xc000012f).

Edit: Nevermind. I managed to fix it on my own by deleting, redownloading, and rebuilding UE5 from source code. Also, if anybody has trouble with Generating project files, check if your environment variable for MSBuildSDKsPath is set to the SDK bundled with UE5, which should be something like this:

D:\Unreal Engine\UE_5.4\Engine\Binaries\ThirdParty\DotNet\6.0.302\windows\sdk\6.0.302\Sdks

2

The support on here sucks I can’t remember my sone email and when I search using his display name it just says they can’t send an email. Even if it could I don’t know the email so I would not be able to get it. What can I do?