title: Sections must only appear once per config file. See the help topic for exceptions
body: <p>There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store. </p>
  
  <p>The following message may help in diagnosing the problem: Sections must only appear once per config file. See the help topic for exceptions. (C:\Users\berkay.bektas\Desktop\x\Yalcomania_Project\Yalcomania_APP\YalcomaniaTours\YalcomaniaTours.UI.WebApp\web.config line 20)</p>
  
  <pre><code>    &lt;?xml version="1.0"?&gt;
  &lt;!--
    For more information on how to configure your ASP.NET application, please visit
    http://go.microsoft.com/fwlink/?LinkId=169433
    --&gt;
  &lt;configuration&gt;
    &lt;configSections&gt;
      &lt;!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --&gt;
      &lt;section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/&gt;
    &lt;/configSections&gt;
    &lt;system.web&gt;
      &lt;roleManager enabled="true" /&gt;
      &lt;membership&gt;
        &lt;providers&gt;
          &lt;clear/&gt;
          &lt;add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="MembershipConn" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="true" applicationName="/" requiresUniqueEmail="false" passwordFormat="Hashed" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="7" minRequiredNonalphanumericCharacters="1" passwordAttemptWindow="10" passwordStrengthRegularExpression=""/&gt;
        &lt;/providers&gt;
      &lt;/membership&gt;
  
      &lt;roleManager&gt;
        &lt;providers&gt;
          &lt;clear/&gt;
          &lt;add name="AspNetSqlRoleProvider" connectionStringName="MembershipConn" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/&gt;
          &lt;add name="AspNetWindowsTokenRoleProvider" applicationName="/" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/&gt;
        &lt;/providers&gt;
      &lt;/roleManager&gt;
  
  
      &lt;compilation debug="true" targetFramework="4.5"&gt;
        &lt;assemblies&gt;
          &lt;add assembly="System.Web.DynamicData, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
          &lt;add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
          &lt;add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.Web.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
        &lt;/assemblies&gt;
      &lt;/compilation&gt;
      &lt;httpRuntime targetFramework="4.5"/&gt;
  
    &lt;/system.web&gt;
    &lt;entityFramework&gt;
      &lt;defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework"&gt;
        &lt;parameters&gt;
          &lt;parameter value="v11.0"/&gt;
        &lt;/parameters&gt;
      &lt;/defaultConnectionFactory&gt;
      &lt;providers&gt;
        &lt;provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/&gt;
      &lt;/providers&gt;
    &lt;/entityFramework&gt;
    &lt;connectionStrings&gt;
      &lt;add name="MembershipConn" connectionString="server=.;database=Yalcomania;user id=sa;password=123"/&gt;
      &lt;add name="YalcomaniaEntities" connectionString="metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string=&amp;quot;data source=.;initial catalog=Yalcomania;user id=sa;password=123;MultipleActiveResultSets=True;App=EntityFramework&amp;quot;" providerName="System.Data.EntityClient"/&gt;
    &lt;/connectionStrings&gt;
    &lt;appSettings&gt;
  
        &lt;add key="ValidationSettings:UnobtrusiveValidationMode" value="None"/&gt;
  
    &lt;/appSettings&gt;
  &lt;/configuration&gt;
  </code></pre>