initialisation - élément de configuration c# Visual Studio 2012 Express n'est pas déclaré - Stack Overflow

I have the following issue and I was not able to find anything sufficient in order to resolve it.

Before debugging my application I get a warning that says configuration element is not declared. The app compiles and works fine though. I recently tried to add a connection string in the configuration section and pull it back in the app. Then I get a proper error when it tries to access it saying "Configuration system failed to initialize"

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <configSections />
   <startup>
      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
   </startup>
   <system.net>
      <defaultProxy useDefaultCredentials="true" />
   </system.net>
   <system.serviceModel>
      <bindings>two basichttpbindings here</bindings>
      <client>two endpoints here that bind with the basic httpbindings above. This is irrelevant as it was added even after the problem appeared</client>
   </system.serviceModel>
</configuration>

Nobody has provided a sufficient answer in the fora so far. Has something changed or does anybody know anything related to that?

Thank you in advance

I have the following issue and I was not able to find anything sufficient in order to resolve it.

Before debugging my application I get a warning that says configuration element is not declared. The app compiles and works fine though. I recently tried to add a connection string in the configuration section and pull it back in the app. Then I get a proper error when it tries to access it saying "Configuration system failed to initialize"

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <configSections />
   <startup>
      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
   </startup>
   <system.net>
      <defaultProxy useDefaultCredentials="true" />
   </system.net>
   <system.serviceModel>
      <bindings>two basichttpbindings here</bindings>
      <client>two endpoints here that bind with the basic httpbindings above. This is irrelevant as it was added even after the problem appeared</client>
   </system.serviceModel>
</configuration>

Nobody has provided a sufficient answer in the fora so far. Has something changed or does anybody know anything related to that?

Thank you in advance

Source