Security Exception for default MVC 5 application

Question

I got security exception when deploying the default MVC 5 app generated with VS 2013 to my hosting account.

Is there any quick solution for this problem?

Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. 

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   Microsoft.Owin.Host.SystemWeb.Infrastructure.DefaultTraceFactory.InitializeTraceSource(String key) +0
   System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory) +72
   Microsoft.Owin.Host.SystemWeb.Infrastructure.DefaultTraceFactory.GetOrAddTraceSource(String name) +52
   Microsoft.Owin.Host.SystemWeb.Infrastructure.DefaultTraceFactory.Create(String name) +28
   Microsoft.Owin.Host.SystemWeb.OwinAppContext..ctor() +43
   Microsoft.Owin.Host.SystemWeb.OwinBuilder.Build(Action`1 startup) +30
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.InitializeBlueprint() +70
   System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +115
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.Init(HttpApplication context) +106
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +418
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +172
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +336
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +296

Thanks, Khachatur

Answer 1

Thanks for your answers. It looks like I cannot use MVC5 with my hosting service (hostgator).

The current versions of ASP.NET now only support full trust. MS have stated in Release Notes: Known Issues that "ASP.NET MVC 5 no longer supports partial trust....". In particular the [assembly: AllowPartiallyTrustedCallers] attribute has been removed from the source code. You can read more about ASP.NET's official position in Levi's answer to is-trying-to-develop-for-medium-trust-a-lost-cause, which also includes further links to why support has been removed.

See: Deploying ASP.NET MVC Project