1>------ Build started: Project: UE4, Configuration: Development_Editor x64 ------
1>Creating makefile for UE4Editor (no existing makefile)
1>Building 8 actions with 16 processes...
1> [1/8] Module.Core.5_of_14.cpp
1>S:/UnrealEngine-4.25/Engine/Source/Runtime/Core/Private/Internationalization/Text.cpp(42): error C2375: 'FastDecimalFormat::Pow10': redefinition; different linkage
1> S:/UnrealEngine-4.25/Engine/Source/Runtime/Core/Private/Internationalization/FastDecimalFormat.cpp(715): note: see declaration of 'FastDecimalFormat::Pow10'
1>S:/UnrealEngine-4.25/Engine/Source/Runtime/Core/Private/Internationalization/Text.cpp(621): error C2065: 'Pow10': undeclared identifier
1>S:/UnrealEngine-4.25/Engine/Source/Runtime/Core/Private/Internationalization/Text.cpp(621): error C2568: '/': unable to resolve function overload
1> S:/UnrealEngine-4.25/Engine/Source/Runtime/Core/Private/Internationalization/Text.cpp(621): note: could be 'uint64 FastDecimalFormat::Pow10(const int32)'
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(46,5): error MSB3073: The command "C:\WINDOWS\System32\[chcp.com](https://chcp.com/) 65001 >NUL
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(46,5): error MSB3073: ..\..\Build\BatchFiles\Build.bat -Target="UE4Editor Win64 Development" -Target="ShaderCompileWorker Win64 Development -Quiet" -WaitMutex -FromMsBuild" exited with code 6.
1>Done building project "UE4.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 2 up-to-date, 0 skipped ==========
I have not change anything in the source, just downloaded, ran setup.bat, then GenerateProjectFiles.bat, then opened the solutions and tried to build the editor.
Was doing this to test building a dedicated server.