After adding the assebly of System.Data.Entity to my web config I got this error: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.

I have deleted the obj and bin folders, I removed the line authentication="windows", tried to reopen as some has said it worked, I have checked that there is only 1 web.config within the main folder (Entity Framework - Folder for forms, model, DAL and BLL)...

What other reasons is there that this will happen? I searched everywhere and it's basically the above reasons I found....

This is my web.config if it makes a difference:

    <configuration>
  <connectionStrings>
    <add name="ApplicationServices"
     connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true"
     providerName="System.Data.SqlClient" />
    <add name="CStringVKB" connectionString="Data Source=.;Initial Catalog=VKB;Persist Security Info=True;User ID=websiteservice;Password=websiteservice" providerName="System.Data.SqlClient" />
  </connectionStrings>
  <system.web>
    <compilation debug="true" optimizeCompilations="true" targetFramework="4.0" >
      <assemblies>
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      </assemblies>
    </compilation>
    <!--<authentication mode="Windows">
      <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
    </authentication>-->
     <membership>
      <providers>
        <clear/>
        <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices"
         enablePasswordRetrieval="false" enablePasswordR
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