UE5(5.0.3) and visual studio2019 can't build

Development Programming & Scripting C++
, , ,
1

I create a blank C++ project, then build it in vs 2019, but it report the following errors:

Clean started...
1>------ Clean started: Project: P1, Configuration: Development_Editor x64 ------
1>Cleaning P1Editor and UnrealHeaderTool binaries...
1>UnrealBuildTool : error : Unable to delete E:\unreal\P1\Binaries\Win64\UnrealEditor-P1.dll (Unable to delete E:\unreal\P1\Binaries\Win64\UnrealEditor-P1.dll - 拒绝访问。
1>                        Processes with open handles to file:
1>                          16996: E:\Program Files\Epic Games\UE_5.0\Engine\Binaries\Win64\UnrealEditor.exe (started 2022/8/9 14:56:17))
1>c:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(39,5): error MSB3073: The command ""E:\Program Files\Epic Games\UE_5.0\Engine\Build\BatchFiles\Clean.bat" P1Editor Win64 Development -Project="E:\unreal\P1\P1.uproject" -WaitMutex -FromMsBuild" exited with code -1.
1>Done building project "P1.vcxproj" -- FAILED.
2>------ Skipped Clean: Project: UE5, Configuration: BuiltWithUnrealBuildTool Win64 ------
2>Project not selected to build for this solution configuration 
========== Clean: 0 succeeded, 1 failed, 1 skipped ==========

what does this mean? why can’t delete dll files in Binaries directory?

2

Because they are open in Unreal Editor. Try to close it (And kill all hanging processes of it) and then build again.

1 Like
3

Thanks, it works.
In previous versions, I used to open UE editor and vs2019 at the same time, and then compile with vs。
I should read UE5 release notes again, learn how to build C++ project in UE5.

1 Like
4

with vs2019 and ue5 you can ctrl+alt+F11 from inside vs and have it build in ue5

1 Like