TestExecution encountered unexpected failures System.IO.FileNotFoundException: Could not load file or assembly 'System.Net.Http, Version=4.2.0.0, or one of its dependencies. The system cannot find the file specified.

TestExecution encountered unexpected failures System.IO.FileNotFoundException: Could not load file or assembly 'System.Net.Http, Version=4.2.0.0, or one of its dependencies. The system cannot find the file specified. #1585