# Building UE 4.27 fails due to missing Physx headers on Microsoft Windows **URL:** \ **Category:** World Creation\ **Tags:** windows, physx, unreal-engine, GitHub, Physics, Visual-Studio, question, CPP\ **Created:** [June 8, 2021, 4:56pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568 "2021-06-08T16:56:58Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![NuLL3rr0r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@NuLL3rr0r](https://forums.unrealengine.com/u/NuLL3rr0r)\ **Post date:** [June 8, 2021, 4:56pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/1 "2021-06-08T16:56:58Z")
![340962-screenshot-2021-06-08-10-55-11-547552872.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/5/6/d56eef2226d1af332d836e52224cd91f314e2567.png) At first, it complains about some missing Physix headers e.g.: Severity Code Description Project File Line Suppression State Error (active) E1696 cannot open source file “Px.h” UE4 C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Public\PhysXIncludes.h 41 Then it gives the following errors: Severity Code Description Project File Line Suppression State Error C2232 ‘-\>TUniquePtr\::IsValid’: left operand has ‘class’ type, use ‘.’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 103 Error C2232 ‘-\>TUniquePtr\::IsValid’: left operand has ‘class’ type, use ‘.’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 106 Error C3668 ‘AActor::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\GameFramework\Actor.h 2912 Error C3668 ‘AActor::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\GameFramework\Actor.h 2912 Error C3861 ‘CreateMaterial’: identifier not found UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 105 Error C2065 ‘FAsyncPreRegisterDDCRequest’: undeclared identifier UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C2065 ‘FAsyncPreRegisterDDCRequest’: undeclared identifier UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C2504 ‘FChaosEngineInterface’: base class undefined UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Public\Physics\PhysicsInterfacePhysX.h 173 Error C2504 ‘FChaosEngineInterface’: base class undefined UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Public\Physics\PhysicsInterfacePhysX.h 173 Error C2653 ‘FChaosEngineInterface’: is not a class or namespace name UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 92 Error C2653 ‘FChaosEngineInterface’: is not a class or namespace name UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 105 Error C2653 ‘FChaosEngineInterface’: is not a class or namespace name UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 108 Error C2653 ‘FChaosEngineInterface’: is not a class or namespace name UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 109 Error C2582 ‘operator =’ function is unavailable in ‘FPhysicsMaterialHandle\_PhysX’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 105 Error C3861 ‘ReleaseMaterial’: identifier not found UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 92 Error C3861 ‘SetUserData’: identifier not found UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 108 Error C2923 ‘TSharedPtr’: ‘FAsyncPreRegisterDDCRequest’ is not a valid template type argument for parameter ‘ObjectType’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C2923 ‘TSharedPtr’: ‘FAsyncPreRegisterDDCRequest’ is not a valid template type argument for parameter ‘ObjectType’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C2976 ‘TSharedPtr’: too few template arguments UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C2976 ‘TSharedPtr’: too few template arguments UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C3203 ‘TSharedPtr’: unspecialized class template can’t be used as a template argument for template parameter ‘InElementType’, expected a real type UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C3203 ‘TSharedPtr’: unspecialized class template can’t be used as a template argument for template parameter ‘InElementType’, expected a real type UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1649 Error C3668 ‘UActorComponent::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Components\ActorComponent.h 375 Error C3668 ‘UActorComponent::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Components\ActorComponent.h 375 Error C3668 ‘UAnimInstance::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Animation\AnimInstance.h 1285 Error C3668 ‘UAnimNotify::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Animation\AnimNotifies\AnimNotify.h 94 Error C3668 ‘UCurveBase::PostEditChangeProperty’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Curves\CurveBase.h 82 Error C3668 ‘UCurveBase::PostEditChangeProperty’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Curves\CurveBase.h 82 Error C3668 ‘ULevel::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\Level.h 757 Error C3668 ‘ULevel::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\Level.h 757 Error C3668 ‘ULocalPlayer::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\LocalPlayer.h 277 Error C3668 ‘UNetConnection::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\NetConnection.h 814 Error C3668 ‘UNetDriver::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\NetDriver.h 1486 Error C3861 ‘UpdateMaterial’: identifier not found UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 109 Error C3668 ‘USoundEffectSourcePresetChain::PostEditChangeProperty’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Sound\SoundEffectSource.h 62 Error C3668 ‘USoundEffectSourcePresetChain::PostEditChangeProperty’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Sound\SoundEffectSource.h 62 Error C3668 ‘UWorld::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 2563 Error C3668 ‘UWorld::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Classes\Engine\World.h 2563 Error C3668 ‘UWorldSubsystem::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Public\Subsystems\WorldSubsystem.h 24 Error C3668 ‘UWorldSubsystem::GetWorld’: method with override specifier ‘override’ did not override any base class methods UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\Engine\Public\Subsystems\WorldSubsystem.h 24 Error C2664 ‘void FChaosEngineInterface::CreateActor(const FActorCreationParams &,FPhysicsActorHandle &)’: cannot convert argument 2 from ‘Chaos::TGeometryParticle\ \*’ to ‘FPhysicsActorHandle &’ HeadlessChaos C:\OPT\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1377 Error C2664 ‘void FChaosScene::AddActorsToScene\_AssumesLocked(TArray\ &,const bool)’: cannot convert argument 1 from ‘TArray\’ to ‘TArray\ &’ HeadlessChaos C:\OPT\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1395 Error C1083 Cannot open include file: ‘ShaderCompiler.h’: No such file or directory UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\NetworkFileSystem\Public\INetworkFileSystemModule.h 7 Error C1083 Cannot open include file: ‘TextureResource.h’: No such file or directory UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\SlateNullRenderer\Private\SlateNullRendererModule.cpp 12 Error MSB3073 The command “…\Build\BatchFiles\Build.bat HeadlessChaos Win64 Development -WaitMutex -FromMsBuild” exited with code 6. HeadlessChaos C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets 46 Error MSB3073 The command “…\Build\BatchFiles\Build.bat UnrealFileServer Win64 Development -WaitMutex -FromMsBuild” exited with code 6. UnrealFileServer C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets 46 Error C2027 use of undefined type ‘FPhysicsMaterialHandle\_PhysX’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 103 Error C2027 use of undefined type ‘FPhysicsMaterialHandle\_PhysX’ UnrealFileServer C:\OPT\UnrealEngine\Engine\Source\Runtime\PhysicsCore\Private\PhysicalMaterial.cpp 106 ---
**Author:** ![imnomad](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@imnomad](https://forums.unrealengine.com/u/imnomad)\ **Post date:** [June 15, 2021, 3:34pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/2 "2021-06-15T15:34:34Z")
I’m having the same issue with building UE5. ---
**Author:** ![patlj09](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@patlj09](https://forums.unrealengine.com/u/patlj09)\ **Post date:** [July 24, 2021, 12:19pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/3 "2021-07-24T12:19:51Z")
I’m also getting errors when trying to compile on Windows 10, Win64, Dev Editor, but from Chaos and stuff… origin/4.27, latest commit 2021-07-21. sha: acb99cb9fcff4b1952aeb196093819f76c952412 ``` Severity Code Description Project File Line Suppression State Error C2664 'void FChaosEngineInterface::CreateActor(const FActorCreationParams &,FPhysicsActorHandle &)': cannot convert argument 2 from 'Chaos::TGeometryParticle *' to 'FPhysicsActorHandle &' HeadlessChaos D:\Code\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1377 Error (active) E0434 a reference of type "FPhysicsActorHandle &" (not const-qualified) cannot be initialized with a value of type "Chaos::TGeometryParticle *" HeadlessChaos D:\Code\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1377 Error (active) E0434 a reference of type "TArray &" (not const-qualified) cannot be initialized with a value of type "TArray" HeadlessChaos D:\Code\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1395 Error (active) E1574 static assertion failed with "TAtomic is only usable with trivial types" HeadlessChaos D:\Code\UnrealEngine\Engine\Source\Runtime\Core\Public\Templates\Atomic.h 543 Warning The referenced component 'MobileDeviceInterface' could not be found. AutomationTool Error C2664 'void FChaosScene::AddActorsToScene_AssumesLocked(TArray &,const bool)': cannot convert argument 1 from 'TArray' to 'TArray &' HeadlessChaos D:\Code\UnrealEngine\Engine\Source\Programs\HeadlessChaos\Private\HeadlessChaosTestPhysicsScene.cpp 1395 ``` … ![344792-win64-ue-builderrors.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/c/3/ac3f50a868e13e1bf637a5e8a64c5e827329e83a.png) ---
**Author:** ![weyniez](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@weyniez](https://forums.unrealengine.com/u/weyniez)\ **Post date:** [August 16, 2021, 11:12am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/4 "2021-08-16T11:12:15Z")
I’m having the same issue. Did either of you figure out what the problem was? ---
**Author:** ![NuLL3rr0r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@NuLL3rr0r](https://forums.unrealengine.com/u/NuLL3rr0r)\ **Post date:** [August 16, 2021, 11:24am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/5 "2021-08-16T11:24:08Z")
I switched to ue5-main branch and it builds fine on Windows. I skipped 4.27 for good. ---
**Author:** ![DanathMorrin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/danathmorrin/32/592574_2.png) [@DanathMorrin](https://forums.unrealengine.com/u/DanathMorrin)\ **Post date:** [August 21, 2021, 8:16am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/6 "2021-08-21T08:16:53Z")
Having the same issue when compiling 4.27 release. Any ideas how to fix? ![346872-427-build-error.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/e/b/bebc16417b5772221a1474fba2b796b34316dcdb.png) ---
**Author:** ![Wayne\_Koorts](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wayne_koorts/32/713752_2.png) [@Wayne\_Koorts](https://forums.unrealengine.com/u/Wayne_Koorts)\ **Post date:** [August 22, 2021, 3:09am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/7 "2021-08-22T03:09:00Z")
Exact same errors for me after upgrading my source to 4.27. ---
**Author:** ![GlenAJohnsonJr](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@GlenAJohnsonJr](https://forums.unrealengine.com/u/GlenAJohnsonJr)\ **Post date:** [August 23, 2021, 5:25pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/8 "2021-08-23T17:25:36Z")
I also am experiencing this same issue. ---
**Author:** ![olivierJT](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/olivierjt/32/1194659_2.png) [@olivierJT](https://forums.unrealengine.com/u/olivierJT)\ **Post date:** [August 25, 2021, 9:07pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/9 "2021-08-25T21:07:45Z")
Exact same errors. VS 2017 15.9.18 updated to 15.9.38 same. ---
**Author:** ![olivierJT](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/olivierjt/32/1194659_2.png) [@olivierJT](https://forums.unrealengine.com/u/olivierJT)\ **Post date:** [August 26, 2021, 2:18pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/10 "2021-08-26T14:18:52Z")
**Fixed it today!** Using VS 2017 I updated to the latest 15.9.38 _(thought that alone didn’t help)_ **I was missing** a _(new?)_ requirement **"NuGet Package Manger"** As stated here: [https://github.com/EpicGames/UnrealEngine](https://github.com/EpicGames/UnrealEngine) I had installed before a “Nuget targets and build tasks” but not the “NuGet Package Manger” **How to?** Go to: **C:\Program Files (x86)\Microsoft Visual Studio\Installer and launch vs\_installer.exe** Go to modify and then “individual components” Check “Nuget package manager” _(in My case for I have also the “Nuget targets and build tasks” checked)_ Unsure why it’s been a while. _Extra optional_ (not sure it did something) but I also updated my Window Kit. It usually comes with VS installation though. > **[Windows SDK - Windows app development](https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/)** > > The Windows SDK for Windows 11 contains headers, libraries, and tools you can use when you create apps that run on Windows. The last one is the one that comes with VS2019 _I don’t thing it’s a required step._ Rebooted after all that of course _(it may help)_ It then built without any errors. ---
**Author:** ![NuLL3rr0r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@NuLL3rr0r](https://forums.unrealengine.com/u/NuLL3rr0r)\ **Post date:** [August 26, 2021, 2:30pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/11 "2021-08-26T14:30:41Z")
Could you please checkout @olivierJT 's answer and let us know if it works for you? ---
**Author:** ![NuLL3rr0r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@NuLL3rr0r](https://forums.unrealengine.com/u/NuLL3rr0r)\ **Post date:** [August 26, 2021, 2:32pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/12 "2021-08-26T14:32:29Z")
Could you please checkout @olivierJT 's answer and let us know if it works for you? In case it works I’ll accept it as an answer for anyone else coming across this. ---
**Author:** ![NuLL3rr0r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@NuLL3rr0r](https://forums.unrealengine.com/u/NuLL3rr0r)\ **Post date:** [August 26, 2021, 2:32pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/13 "2021-08-26T14:32:56Z")
Could you please checkout @olivierJT 's answer and let us know if it works for you? In case it works I’ll accept it as an answer for anyone else coming across this. ---
**Author:** ![DanathMorrin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/danathmorrin/32/592574_2.png) [@DanathMorrin](https://forums.unrealengine.com/u/DanathMorrin)\ **Post date:** [August 26, 2021, 10:56pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/16 "2021-08-26T22:56:50Z")
I had NuGet Package Manger already installed. Installing Windows SDK didn’t help either. The problem is still there. Nothing changed. ---
**Author:** ![color\_working](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@color\_working](https://forums.unrealengine.com/u/color_working)\ **Post date:** [August 27, 2021, 12:54am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/17 "2021-08-27T00:54:49Z")
Fix it by install “ **Nuget targets and build tasks** ” by Visual Studio Installer. (I had NuGet Package Manger already installed) Using Visual Sudio 2019 and Windows SDK 10.0.18362.0 ![347441-snipaste-2021-08-27-08-53-27.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/c/2/bc254f958cd325ad63b650e3f771ec7efe819a88.png) ---
**Author:** ![Wayne\_Koorts](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wayne_koorts/32/713752_2.png) [@Wayne\_Koorts](https://forums.unrealengine.com/u/Wayne_Koorts)\ **Post date:** [August 27, 2021, 1:10am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/18 "2021-08-27T01:10:34Z")
I already had Nuget and build tools installed (I do a lot of C# development too). FWIW I also installed the newer version of the Windows SDK. No improvement for me, same errors unfortunately. ---
**Author:** ![DanathMorrin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/danathmorrin/32/592574_2.png) [@DanathMorrin](https://forums.unrealengine.com/u/DanathMorrin)\ **Post date:** [September 3, 2021, 9:48am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/19 "2021-09-03T09:48:54Z")
“Nuget targets and build tasks” didn’t help with VS 2017. May be we need to try your configuration of Visual Sudio 2019 + WinSDK 10.0.18362.0. Last time I did it for 4.26, but I couldn’t build the Engine from source with VS 2019. The same 4.26 build with VS 2017 was OK. May be now it’s opposite situation. It’s strange that nothing told about it in the documentation. It’s ritten in p.2 “Install Visual Studio 2017”. Silent VS 2019 migration? ---
**Author:** ![Wayne\_Koorts](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wayne_koorts/32/713752_2.png) [@Wayne\_Koorts](https://forums.unrealengine.com/u/Wayne_Koorts)\ **Post date:** [September 3, 2021, 9:48am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/20 "2021-09-03T09:48:56Z")
Does anyone know what the 4.27-chaos branch is for? That seems to have a working version of the GTEST\_TEST in HeadlessChaosTestPhysicsScene.cpp, wherein it calls FChaosEngineInterface::CreateActor() with the expected FPhysicsActorHandle parameter as the second parameter as opposed to TGeometryParticle in the broken 4.27 version. Link to the line in question: [https://github.com/EpicGames/UnrealEngine/blob/4.27-chaos/Engine/Source/Programs/HeadlessChaos/Private/HeadlessChaosTestPhysicsScene.cpp#L1511](https://github.com/EpicGames/UnrealEngine/blob/4.27-chaos/Engine/Source/Programs/HeadlessChaos/Private/HeadlessChaosTestPhysicsScene.cpp#L1511) ---
**Author:** ![Wayne\_Koorts](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wayne_koorts/32/713752_2.png) [@Wayne\_Koorts](https://forums.unrealengine.com/u/Wayne_Koorts)\ **Post date:** [September 3, 2021, 9:52am UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/21 "2021-09-03T09:52:17Z")
I’m not a C++ expert by any means but I just cannot for the life of me see a way that this function call can work. There is no overload of FChaosEngineInterface::CreateActor, enabled by macros or otherwise, which takes a TGeometryParticle as the second parameter in the release branch. I’m using a stock version of the engine, I haven’t even started building my game and the engine doesn’t build ☹ 4.26 was fine. ---
**Author:** ![pjenness](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@pjenness](https://forums.unrealengine.com/u/pjenness)\ **Post date:** [September 19, 2021, 11:35pm UTC](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568/22 "2021-09-19T23:35:42Z")
HIya. Im getting issues too. Fresh cloe of 4.27 release (as of 19th Sept) Get this error ``` 1> [45/115] Module.HeadlessChaos.4_of_5.cpp 1>V:/UnrealEngine/UE427/Engine/Source/Programs/HeadlessChaos/Private/HeadlessChaosTestPhysicsScene.cpp(1377): error C2664: 'void FChaosEngineInterface::CreateActor(const FActorCreationParams &,FPhysicsActorHandle &)': cannot convert argument 2 from 'Chaos::TGeometryParticle *' to 'FPhysicsActorHandle &' 1> V:\UnrealEngine\UE427\Engine\Source\Runtime\PhysicsCore\Public\Chaos/ChaosEngineInterface.h(333): note: see declaration of 'FChaosEngineInterface::CreateActor' 1>V:/UnrealEngine/UE427/Engine/Source/Programs/HeadlessChaos/Private/HeadlessChaosTestPhysicsScene.cpp(1395): error C2664: 'void FChaosScene::AddActorsToScene_AssumesLocked(TArray &,const bool)': cannot convert argument 1 from 'TArray' to 'TArray &' 1> V:\UnrealEngine\UE427\Engine\Source\Runtime\PhysicsCore\Public\Chaos/ChaosScene.h(108): note: see declaration of 'FChaosScene::AddActorsToScene_AssumesLocked' ``` [Next page](https://forums.unrealengine.com/t/building-ue-4-27-fails-due-to-missing-physx-headers-on-microsoft-windows/484568.md?page=2)