request exceeds the configured maxQueryStringLength when using [Authorize]

Question

I have a MVC3 site in C#, I have a particular view being fed query parameters from

Answer 1

When an unauthorized request comes in, the entire request is URL encoded, and added as a query string to the request to the authorization form, so I can see where this may result in a problem given your situation.

According to MSDN, the correct element to modify to reset maxQueryStringLength in web.config is the element inside the element, see httpRuntime Element (ASP.NET Settings Schema). Try modifying that element.