Attempt by security transparent method 'Microsoft.Web.Helpers.PreApplicationStartCode.Start()' to access security critical method

Question

I have two MVC Websites in my Solution, converted to MVC5. For an specific test, I need both sites running, because one communicates with the other via Web API. They are using IIS Express to run.

When I start one of them inside Visual Studio (2012) and access the started one, everything works fine. When I try to access the other one, I have the following message:

Attempt by security transparent method 'Microsoft.Web.Helpers.PreApplicationStartCode.Start()' to access security critical method 'System.Web.WebPages.Razor.WebPageRazorHost.AddGlobalImport(System.String)' failed.

As suggested by other answers, I updated all my packages and uninstalled DotNetOpenAuth packages from one of them, with no result.

This is the package.config at site #1:

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="AntiXSS" version="4.2.1" targetFramework="net45" />
  <package id="Antlr" version="3.4.1.9004" targetFramework="net45" />
  <package id="BeginCollectionItem" version="1.2.1.0" targetFramework="net45" />
  <package id="Code52.i18n.MVC4" version="0.2.8" targetFramework="net45" />
  <package id="CSS-Filters-Polyfill" version="1.0.0" targetFramework="net45" />
  <package id="DotNet.Highcharts" version="2.0" targetFramework="net45" />
  <package id="DotNetOpenAuth.AspNet" version="4.3.4.13329" targetFramework="net45" />
  <package id="DotNetOpenAuth.Core" version="4.3.4.13329" targetFramework="net45" />
  <package id="DotNetOpenAuth.OAuth.Consumer" version="4.3.4.13329" targetFramework="net45" />
  <package id="DotNetOpenAuth.OAuth.Core" version="4.3.4.13329" targetFramework="net45" />
  <package id="DotNetOpenAuth.OpenId.Core" version="4.3.4.13329" targetFramework="net45" />
  <package id="DotNetOpenAuth.OpenId.RelyingParty" version="4.3.4.13329" targetFramework="net45" />
  <package id="EntityFramework" version="6.0.1" targetFramework="net45" />
  <package id="Facebook" version="6.4.2" targetFramework="net45" />
  <package id="Faker" version="1.2" targetFramework="net45" />
  <package id="Faker.Net" version="1.0.3" targetFramework="net45" />
  <package id="Galleria.js" version="1.2.9" targetFramework="net45" />
  <package id="HtmlAgilityPack" version="1.4.6" targetFramework="net45" />
  <package id="ImageResizer" version="3.3.3" targetFramework="net45" />
  <package id="iTextSharp" version="4.1.2" targetFramework="net45" />
  <package id="jQuery" version="1.10.2" targetFramework="net45" />
  <package id="jQuery.Cookie" version="1.3.1" targetFramework="net45" />
  <package id="jQuery.MaskedInput" version="1.3.1.1" targetFramework="net45" />
  <package id="jQuery.UI.Combined" version="1.10.3" targetFramework="net45" />
  <package id="jQuery.Validation" version="1.8.1" targetFramework="net45" />
  <package id="jquery-globalize" version="0.1.3" targetFramework="net45" />
  <package id="knockoutjs" version="2.2.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Providers" version="1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Providers.Core" version="1.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.Razor" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebHelpers" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages.Data" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages.OAuth" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages.WebData" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.Bcl" version="1.1.6" targetFramework="net45" />
  <package id="Microsoft.Bcl.Build" version="1.0.13" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="2.0.30506.0" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="2.0.30506.0" targetFramework="net45" />
  <package id="Microsoft.Net.Http" version="2.2.18" targetFramework="net45" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
  <package id="ModelMetadataExtensionsWithBugfix" version="0.1.2" targetFramework="net45" />
  <package id="Modernizr" version="2.6.2" targetFramework="net45" />
  <package id="Moq" version="4.0.10827" targetFramework="net45" />
  <package id="morelinq" version="1.0.16006" targetFramework="net45" />
  <package id="MvcMailer" version="4.5" targetFramework="net45" />
  <package id="MvcScaffolding" version="1.0.9" targetFramework="net45" />
  <package id="Newtonsoft.Json" version="5.0.8" targetFramework="net45" />
  <package id="PagedList" version="1.16.0.0" targetFramework="net45" />
  <package id="PagedList.Mvc" version="4.3.0.0" targetFramework="net45" />
  <package id="RazorGenerator.Mvc" version="2.1.1" targetFramework="net45" />
  <package id="RazorGenerator.Testing" version="2.1.1" targetFramework="net45" />
  <package id="RazorPDF" version="1.0.0" targetFramework="net45" />
  <package id="ReflectionMagic" version="2.0.0" targetFramework="net45" />
  <package id="RestSharp" version="104.1" targetFramework="net45" />
  <package id="SendGrid" version="1.1.1" targetFramework="net45" />
  <package id="System.Management.Automation" version="6.1.7601.17515" targetFramework="net45" />
  <package id="System.Web.Providers" version="1.2" targetFramework="net45" />
  <package id="T4Scaffolding" version="1.0.8" targetFramework="net45" />
  <package id="T4Scaffolding.Core" version="1.0.0" targetFramework="net45" />
  <package id="WebActivator" version="1.5.3" targetFramework="net45" />
  <package id="WebActivatorEx" version="2.0.4" targetFramework="net45" />
  <package id="WebGrease" version="1.6.0" targetFramework="net45" />
</packages>

And packages.config at site #2:

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Antlr" version="3.4.1.9004" targetFramework="net45" />
  <package id="BeginCollectionItem" version="1.2.1.0" targetFramework="net45" />
  <package id="CSS-Filters-Polyfill" version="1.0.0" targetFramework="net45" />
  <package id="EntityFramework" version="6.0.1" targetFramework="net45" />
  <package id="Facebook" version="6.1.4" targetFramework="net45" />
  <package id="ImageResizer" version="3.4.2" targetFramework="net45" />
  <package id="jQuery" version="1.9.1" targetFramework="net45" />
  <package id="jQuery.MaskedInput" version="1.3.1.1" targetFramework="net45" />
  <package id="jQuery.UI.Combined" version="1.10.3" targetFramework="net45" />
  <package id="jQuery.Validation" version="1.9.0.1" targetFramework="net45" />
  <package id="jQuery-Timepicker-Addon" version="1.0.0" targetFramework="net45" />
  <package id="knockoutjs" version="2.1.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc.Facebook" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.Razor" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.2" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.HelpPage" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.OData" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.SelfHost" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Tracing" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebHelpers" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages.Data" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages.WebData" version="3.1.1" targetFramework="net45" />
  <package id="Microsoft.Bcl" version="1.1.6" targetFramework="net45" />
  <package id="Microsoft.Bcl.Build" version="1.0.13" targetFramework="net45" />
  <package id="Microsoft.Data.Edm" version="5.6.0" targetFramework="net45" />
  <package id="Microsoft.Data.OData" version="5.6.0" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="2.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="2.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.Net.Http" version="2.2.18" targetFramework="net45" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
  <package id="Modernizr" version="2.5.3" targetFramework="net45" />
  <package id="MvcFlash.Core" version="2.0.1" targetFramework="net45" />
  <package id="MvcScaffolding" version="1.0.9" targetFramework="net45" />
  <package id="Newtonsoft.Json" version="5.0.8" targetFramework="net45" />
  <package id="System.Spatial" version="5.6.0" targetFramework="net45" />
  <package id="T4Scaffolding" version="1.0.8" targetFramework="net45" />
  <package id="T4Scaffolding.Core" version="1.0.0" targetFramework="net45" />
  <package id="Twitter.Bootstrap" version="3.0.0" targetFramework="net45" />
  <package id="Twitter.Bootstrap.MVC" version="2.0.0" targetFramework="net45" />
  <package id="WebActivatorEx" version="2.0.4" targetFramework="net45" />
  <package id="WebGrease" version="1.6.0" targetFramework="net45" />
  <package id="XmlExport" version="0.3.2" targetFramework="net45" />
  <package id="XmlOutput" version="1.0.0" targetFramework="net45" />
</packages>

What else I can try?

EDIT

Web API Call (one site calls the other site):

if (SettingsHelper.GetCurrentSettings().IntegratedToFederated)
{
    // Report Federated
    var pointsGranted = new APIPointsGrantedModel();
    pointsGranted.CustomerId = customerPointsPerShop.Customer.ControlKey;
    pointsGranted.ShopId = (Guid)customerPointsPerShop.Shop.ControlKey;
    pointsGranted.Amount = customerPointsPerShop.Points;
    pointsGranted.Timestamp = DateTime.Now;

    HttpClient aClient = new HttpClient();
    var website = context.Settings.FirstOrDefault().FederatedWebsite;
    Uri theUri = new Uri(website + "/api/APIShops/PointsGranted");
    HttpResponseMessage aResponse = await aClient.PostAsync(theUri, StringContentHelper.BuildStringContent(pointsGranted, pointsGranted.GetType()));

    if (aResponse.IsSuccessStatusCode)
    {
        var responseContent = await aResponse.Content.ReadAsAsync<APIPointsGrantedModel>();
        // Read the response and perform some business logic
    }
    else
    {
        String failureMsg = "HTTP Status: " + aResponse.StatusCode.ToString() + " - Reason: " + aResponse.ReasonPhrase;
        this.FlashError(failureMsg);
        // TODO: Register in log.
    }
}

web.config at site #1:

<?xml version="1.0" encoding="utf-8"?>

<configuration>
  ...
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.4.13329" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.4.13329" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebMatrix.WebData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebMatrix.Data" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Moq" publicKeyToken="69f491c39445e920" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.2.1402.2112" newVersion="4.2.1402.2112" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.OData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Spatial" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="itextsharp" publicKeyToken="8354ae6d2174ddca" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.5.0.0" newVersion="4.1.2.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
      </dependentAssembly>
    </assemblyBinding>
    ...
</configuration>

web.config at site #2:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  ...
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <!-- dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly -->
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebMatrix.WebData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebMatrix.Data" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <!-- dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OpenId" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly -->
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
      </dependentAssembly>
      <!-- dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OAuth.Consumer" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OAuth" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OpenId.RelyingParty" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly -->
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OpenId" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OpenId.RelyingParty" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OAuth.Consumer" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.OAuth" publicKeyToken="2780ccd10d57b246" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Moq" publicKeyToken="69f491c39445e920" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.2.1402.2112" newVersion="4.2.1402.2112" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.OData" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Spatial" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.1.0" newVersion="5.6.1.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
      </dependentAssembly>
    </assemblyBinding>
  ...
 </system.net>
</configuration>

Answer 1

Note: Microsoft-Web-Helpers has been replaced with Microsoft.AspNet.WebHelpers. You should remove the old package first, and then install the newer package.

I opened up the NuGet Package Manager and installed the package Microsoft.AspNet.WebHelpers and things started to work. Note that when you create a new MVC 5 application and try to incorporate SimpleSecurity or SimpleMembership you will hit the same issue because Microsoft.AspNet.WebHelpers is not installed by default. It has to be present for SimpleMembership to run correctly.

I verified that all of the features in the reference application are working correctly after the upgrade. Even the generation of the emails using Postal worked, which I was not sure of because of the upgrade of Razor as well.

One change I needed to make to the SimpleSecurity assembly was to remove the filters AuthorizeAttribute and BasicAuthorizeAttribute and put them in a separate assembly. I did this because they are dependent upon MVC and Web API assemblies. So now there is a version for MVC and another for MVC 5.

Refer this link : http://ctsoftr.com/upgrading-from-asp-net-mvc-4-to-5/