The configuration section 'connectionStrings' cannot be read because it is missing a section declaration

Question

I am trying to move my webpage(c#) to ISS 7.5 server.

I have read that i need to put the in WEBCONFIG to achieve the conection with sql server 2008.

I already did that.

Here is my WEBCONFIG

<?xml version="1.0" encoding="UTF-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <connectionstrings>
   <!-- <remove name="LocalSqlServer" /> -->
    <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"/>
  </connectionstrings> 


  <system.web>

    <!--<identity impersonate="true" /> -->

    <compilation debug="true" targetFramework="4.5">
      <assemblies>
        <!--  <add assembly="System.DirectoryServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/> -->
        <add assembly="*" />
      </assemblies>
    </compilation>
   <!-- <httpRuntime targetFramework="4.5"/> -->
  <!--  <authentication mode="Windows" /> -->
    <authorization>
      <deny users="?" />
    </authorization>
  </system.web>


 <!-- <system.webServer> -->
   <!-- <defaultDocument>
      <files>
        <add value="index.aspx" />
      </files>
    </defaultDocument> -->

  <!--</system.webServer> -->
   <!-- <connectionStrings>
        <remove name="LocalSqlServer" />
        <add connectionString="Server=10.10.201.79;Database=DesaInterno;Integrated Security=true" name="LocalSqlServer" />
    </connectionStrings> -->
</configuration>

When i try tu run my app in IIS comes an error.

Error HTTP 500.19 - Internal Server Error The configuration section 'connectionStrings' cannot be read because it is missing a section declaration

Solution

  <configuration>
    <system.web>
      <compilation debug="true" targetFramework="4.0"/>
    </system.web>
    <connectionStrings>
      <add name="#" connectionString="#" providerName="System.Data.SqlClient"/>
    </connectionStrings>
  </configuration>

---

replace your code with above configuration

as well the tag should be in proper case exact as given

let me know if you still stuck its might be some other issue.