<roleManager enabled="true" defaultProvider="AspNetSqlRoleProvider">

      <providers>

        <clear />

      <add name="AspNetSqlRoleProvider" 

           type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" 

           connectionStringName="ConnectionString"/>

        </providers>

    </roleManager>

Add this to your web.config file

<membership defaultProvider="AspNetSqlMembershipProvider">

      <providers>

        <clear />

        <add name="AspNetSqlMembershipProvider"

       type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"

       connectionStringName="myNewDefaultConnectionString"

       applicationName="/"

       enablePasswordRetrieval="false"

       enablePasswordReset="true"

       requiresQuestionAndAnswer="false"

       requiresUniqueEmail="false"

       minRequiredNonalphanumericCharacters="0"

       passwordFormat="Hashed" />

      </providers>

    </membership>