title: The configuration section 'connectionStrings' cannot be read because it is missing a section declaration
body: <p>I am trying to move my webpage(c#) to ISS 7.5 server.</p>
  
  <p>I have read that i need to put the  in WEBCONFIG to achieve the conection with sql server 2008.</p>
  
  <p>I already did that.</p>
  
  <p>Here is my WEBCONFIG</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&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;connectionstrings&gt;
     &lt;!-- &lt;remove name="LocalSqlServer" /&gt; --&gt;
      &lt;add name="conexionsql" connectionstring="Data Source=FCH-DESARROLLO;Initial Catalog=DesaInterno;Integrated Security=True;User ID=usuario_de_conexion;Password=a"
       providerName="System.Data.SqlClient"/&gt;
    &lt;/connectionstrings&gt; 
  
  
    &lt;system.web&gt;
  
      &lt;!--&lt;identity impersonate="true" /&gt; --&gt;
  
      &lt;compilation debug="true" targetFramework="4.5"&gt;
        &lt;assemblies&gt;
          &lt;!--  &lt;add assembly="System.DirectoryServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/&gt; --&gt;
          &lt;add assembly="*" /&gt;
        &lt;/assemblies&gt;
      &lt;/compilation&gt;
     &lt;!-- &lt;httpRuntime targetFramework="4.5"/&gt; --&gt;
    &lt;!--  &lt;authentication mode="Windows" /&gt; --&gt;
      &lt;authorization&gt;
        &lt;deny users="?" /&gt;
      &lt;/authorization&gt;
    &lt;/system.web&gt;
  
  
   &lt;!-- &lt;system.webServer&gt; --&gt;
     &lt;!-- &lt;defaultDocument&gt;
        &lt;files&gt;
          &lt;add value="index.aspx" /&gt;
        &lt;/files&gt;
      &lt;/defaultDocument&gt; --&gt;
  
    &lt;!--&lt;/system.webServer&gt; --&gt;
     &lt;!-- &lt;connectionStrings&gt;
          &lt;remove name="LocalSqlServer" /&gt;
          &lt;add connectionString="Server=10.10.201.79;Database=DesaInterno;Integrated Security=true" name="LocalSqlServer" /&gt;
      &lt;/connectionStrings&gt; --&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>When i try tu run my app in IIS comes an error.</p>
  
  <blockquote>
    <p>Error HTTP 500.19 - Internal Server Error The configuration section
    'connectionStrings' cannot be read because it is missing a section
    declaration</p>
  </blockquote>