UnrealBuildTool Failed to Compile

The UnrealBuildTool.exe is missing from “UESource\Engine\Binaries\DotNET”

I am running into this problem as well… Anybody?

Hi ,

Did this error occur when you tried to run the GenerateProjectFiles.bat file after downloading the source code? Could you please try re-downloading the dependency files for the version you are trying to build to make sure none of those files were corrupted?

Hi ,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will offer further assistance.

Thank you.

I am currently running into that problem. Yes, it happened with the GenerateProjectFiles.bat. I have tried redownloading the dependencies, but that didn’t help. I then opened up the \UnrealEngine\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.csproj and tried to compile, and that error “Could not copy the file “obj\Debug\UnrealBuildTool.exe” because it was not found” came up. I am using the 4.3 branch.

EDIT: Solved by turning off my anti-virus.

If you are running in DotNet errors I found a fix by deleting NuGet.config from C:\Users\<Your username here>\AppData\Roaming\NuGet and re-running the GenerateProjectFiles.bat.

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