Created a .net Standard 1.4 class library, and then used it in a web application created by targetting .netframework 4.6.2. when running web application the blow exception was thrown.

Could not load file or assembly 'System.Security.Claims, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

I tested same library with .net core web application and there was no error.
in .netframework web application manually installed system.security.claims 4.3 nuget package solved the problem.

I can't understand if this error is for Visual Studio 2017 tooling or Nuget package manager's package restore. but I think it should be solved.