Cannot create build due to 'unresolved external symbol WinMainCRTStartup'

Building the project with a non-editor build-configuration (i.e. Shipping, Development) leads to the following error:

1>------ Build started: Project: Spherion, Configuration: Shipping_Game x64 ------
1>  Performing full C++ include scan (building a new target)
1>  Performing 1 actions (4 in parallel)
1>  [1/1] Link Spherion-Win64-Shipping.exe
1>LINK : error LNK2001: unresolved external symbol WinMainCRTStartup
1>C:\SpherionOnC\Spherion\Unreal\Binaries\Win64\Spherion-Win64-Shipping.exe : fatal error LNK1120: 1 unresolved externals
1>ERROR : UBT error : Failed to produce item: C:\SpherionOnC\Spherion\Unreal\Binaries\Win64\Spherion-Win64-Shipping.exe

Any help is highly appreciated.

Kind regards.

Well, I think you are calling WinMainCRTStartup variables, but in some part of your project the library for CRT is missed that’s why you got a link message error.

Have you tried to Initializes global state needed by CRT?

Maybe you have the standard entry point and you need to set CRT entry at the beggining of your code.