NuGet Warning NU5100

The assembly 'bin\Debug\net461\project.dll' is not inside the 'lib' folder and hence it won't be added as a reference when the package is installed into a project. Move it into the 'lib' folder if it needs to be referenced.

Issue

The folder being packaged contains an assembly file that is not in lib folder.

Solution

While packaging a folder please ensure that all assembly files are placed inside a framework-specific folder under a lib folder. For more information on the folder structure, see Framework version folder structure.