To call this method, the "Membership.Provider" property must be an instance of "ExtendedMembershipProvider"

asp.net, asp.net-membership, asp.net-mvc, c#

Solution

Try setting the following up in your `web.config` within the `<system.web>` node:

    <roleManager enabled="true" defaultProvider="SimpleRoleProvider">
        <providers>
            <clear />
            <add name="SimpleRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" />
        </providers>
    </roleManager>
    <membership defaultProvider="SimpleMembershipProvider">
        <providers>
            <clear />
            <add name="SimpleMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" />
        </providers>
    </membership>
    <sessionState mode="InProc" customProvider="DefaultSessionProvider">
        <providers>
            <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
        </providers>
    </sessionState>

Sounds like SimpleMembership isn't recognized when you go to use it.

Also, it may be worth including, the `WebMatrix.webData` library can be installed via NuGet:

PM> Install-Package Microsoft.AspNet.WebPages.WebData

Problem

Currently whenever I try to register a user or login using the default membership services built into ASP.Net MVC4 on my host provider DiscountASP I receive the error To call this method, the "Membership.Provider" property must be an instance of "ExtendedMembershipProvider". This doesn't happen locally. Here is my `InitializeSimpleMembershipAttribute.cs`: ``` [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)] public sealed class InitializeSimpleMembershipAttribute : ActionFilterAttribute { private static SimpleMembershipInitializer _initializer; private static object _initializerLock = new object(); private static bool _isInitialized; public override void OnActionExecuting(ActionExecutingContext filterContext) { // Ensure ASP.NET Simple Membership is initialized only once per app start LazyInitializer.EnsureInitialized(ref _initializer, ref _isInitialized, ref _initializerLock); } private abstract class SimpleMembershipInitializer { protected SimpleMembershipInitializer() { Database.SetInitializer<UsersContext>(null); try { using (var context = new UsersContext()) { if (!context.Database.Exists()) { // Create the SimpleMembership database without Entity Framework migration schema ((IObjectContextAdapter)context).ObjectContext.CreateDatabase(); } } WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true); } catch (Exception ex) { throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex); } } } } ``` Here is a full screenshot of the error: Does anyone know how I can fix this or know an article that addresses it?

Original source