GlobalConfiguration.Configure() not present after Web API 2 and .NET 4.5.1 migration
It needs the system.web.http.webhost which is part of this package. I fixed this by installing the following package: PM> Install-Package Microsoft.AspNet.WebApi.WebHost or search for it in nuget https://www.nuget.org/packages/Microsoft.AspNet.WebApi.WebHost/5.1.0