i can not open ue 5.1, it always crash at 45%

Development Programming & Scripting
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1

i am newbie and this is my first time installing unreal engine.
this is what i get:
LoginId:e775d7174d94e777f9787a892f8314f0
EpicAccountId:8897666baa2047d9a6fba4dfae4c19bc

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 7999] Failed to compile global shader FOcclusionMainRG . Enable ‘r.ShaderDevelopmentMode’ in ConsoleVariables.ini for retries.

UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

**And in unreal.log file :
2 Shader compiler errors compiling global shaders for platform PCD3D_SM5:

Shader debug info dumped to: “C:/Users/Ntanh/AppData/Local/UnrealEngine/5.1/Saved/ShaderDebugInfo/PCD3D_SM5/Global/FDefaultMainCHS/0”

C:/Program Files/Epic Games/UE_5.1/Engine/Shaders/Private/RayTracing/RayTracingBuiltInShaders.usf(): Shader FDefaultMainCHS, Permutation 0, VF None:

error: validator version 1,3 does not support target profile.

C:/Program Files/Epic Games/UE_5.1/Engine/Shaders/Private/RayTracing/RayTracingBuiltInShaders.usf(): Shader FDefaultMainCHS, Permutation 0, VF None:

D3DCompileToDxil failed. Error code: Unspecified error (0x80004005).

Errors compiling global shader FDefaultMainCHS :

error: validator version 1,3 does not support target profile.

D3DCompileToDxil failed. Error code: Unspecified error (0x80004005).

appError called: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 7999]

Failed to compile global shader FDefaultMainCHS . Enable ‘r.ShaderDevelopmentMode’ in ConsoleVariables.ini for retries.

i enabled ‘r.ShaderDevelopmentMode’ in ConsoleVariables.ini but nothing changes.I am unsure how to proceed and would welcome some support. Can someone please help?

2

There was a winsdows update last week
try to reinstall your video drivers.

3

thanks for your reply.I just reinstalled windows a few days ago,so I don’t think that’s the reason.but i solved it by reinstalling ue5 and it works magically