"Attempt by method 'System.Web.Http.GlobalConfiguration..cctor()' to access field 'System.Web.Http.GlobalConfiguration.CS$<>9__CachedAnonymousMethodDelegate2' failed."
Today when i was working on WebAPi and enabling CORS for WebAPI ,i confronted an error which took time to resolve and finally resolved.
To mitigate such issue you should have to install one of the possible insatalltion using NuGet Package Manager console.
Go to NuGet Package Manager console and select Default Project in which you would like to get this feature enabled and run the following command as shown below.
Install-Package Microsoft.AspNet.WebApi –IncludePrerelease
I will resolve an error and will help to proceed further with you business logic.