<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
<BuildConfiguration>
<ProcessorCountMultiplier>1</ProcessorCountMultiplier>
<bShadowVariableErrors>true</bShadowVariableErrors>
</BuildConfiguration>
</Configuration>
The url: https://www.unrealengine.com/BuildConfiguration points to a 404. Not a bug but something that probably should be fixed. I did find the documentation here however: https://docs.unrealengine.com/latest/INT/Programming/UnrealBuildSystem/Configuration/
Also the location of where to find it is listed wrongly here if I understood correctly: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums I found it through ctrl+f.