title: The entry has already been added
body: <p>All my Razors views have this error:</p>
  <blockquote>
  <p>The pre-application start initialization method Start on type WebMatrix.WebData.PreApplicationStartCode threw an exception with the following error message:</p>
  <p>The entry 'DefaultConnection' has already been added.</p>
  </blockquote>
  <p>Now, as you can see in my connection string configuration, I don't have the connection string name repeated:</p>
  <pre><code>&lt;connectionStrings&gt;
      &lt;add name=&quot;DefaultConnection&quot; connectionString=&quot;Data Source=.\foo;Initial Catalog=aspnet-foo-20130212133051;MultipleActiveResultSets=true;Integrated Security=SSPI&quot; providerName=&quot;System.Data.SqlClient&quot; /&gt;
      &lt;add name=&quot;ServiDeskConnection&quot; connectionString=&quot;Data Source=fooo;Initial Catalog=mdb;User Id=foo;Password=fooo;MultipleActiveResultSets=true&quot; providerName=&quot;System.Data.SqlClient&quot; /&gt;
      &lt;add name=&quot;mdbEntities&quot; connectionString=&quot;metadata=res://*/Models.ExternalData.ExternalContext.csdl|res://*/Models.ExternalData.ExternalContext.ssdl|res://*/Models.ExternalData.ExternalContext.msl;provider=System.Data.SqlClient;provider connection string=&amp;quot;data source=foo;initial catalog=mdb;user id=foo;password=foo_prod01;multipleactiveresultsets=True;App=EntityFramework&amp;quot;&quot; providerName=&quot;System.Data.EntityClient&quot; /&gt;
      &lt;add name=&quot;SisInfoInventoryEntities&quot; connectionString=&quot;metadata=res://*/Models.ExternalData.Inventory.csdl|res://*/Models.ExternalData.Inventory.ssdl|res://*/Models.ExternalData.Inventory.msl;provider=System.Data.SqlClient;provider connection string=&amp;quot;data source=.\foo;initial catalog=foo;integrated security=True;multipleactiveresultsets=True;App=EntityFramework&amp;quot;&quot; providerName=&quot;System.Data.EntityClient&quot; /&gt;
  &lt;/connectionStrings&gt;
  </code></pre>
  <p>I already tried to use <code>&lt;Clear/&gt;</code>, but it is worse, because it said that I don't have any connection.</p>
  <p>I tried to unload the project of the same solution, but it stills did not work.</p>
  <p>Note that when I build the project, it works well.</p>
  <p><sub>(This has been answered several times, but none of the solutions had worked for me.)</sub></p>