Thank you for writing us.
That warning is next to Add referenced assemblies to solution
as we forbid adding the assemblies to Solution for Web Site projects. The reason for doing this is that these assemblies are always deployed in the BIN folder of the project and there is no point in adding them to the Solution folder of the project.
With that said I want to encourage you to continue with your work and not to worry about the warning as it is for the Add referenced assemblies to solution
Please let me know if you have any questions.
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