Configuration system failed to initialize in console application c#

Question

I have a console app that I would like to use an App.config file for.  I added this file to my project.  I also added a reference to System.Configuration and I added the using System.Configuration to the to of my file.

When I build the app there are no problems but when I step into the code I get the following error message: configuration system failed to initialize

If I comment out the line of code that tries to access the App.config file I don't get any errors.

string fileName = ConfigurationManager.AppSettings["FileName"];

Answer 1

Hi

Check with calling   

 

ConfigurationManager.OpenExeConfiguration("App config path" ); 

 

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Answer 2

Here is the answer....I didn't have an app.config file that had a <configSections></configSections> before <appSettings></appSettings>

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="CustomSection" type="Samples.AspNet.CustomSection, ConfigurationErrorsException, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" allowDefinition="Everywhere" allowExeDefinition="MachineToApplication" restartOnExternalChanges="true" />
  </configSections>
  <appSettings>
    <add key="FileName" value="FileName.csv" />
  </appSettings>
  <CustomSection fileName="default.txt" maxUsers="10" />
</configuration>

Answer 3

Check if you have the below in your App.config

<machineSettings maxTimeout="00:01:00"/>

Comment whole section. It is not required for debugging.