Why Does My ConfigurationManager Throw a 'Configuration System Failed to Initialize' Error, and How Can I Fix It?

Configuration System Failed to Initialize Issue in Configuration Manager

When encountering the "Configuration system failed to initialize" error while accessing "ConnectionString" in ConfigurationManager, it indicates a problem with the configuration file's structure.

To resolve this issue, ensure that the configuration file follows a specific format:

<?xml version="1.0"?>
<configuration>
    <configSections>
        <sectionGroup name="applicationSettings" 
                      type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">

            <section name="YourProjectName.Properties.Settings" 
                     type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" 
                     requirePermission="false" />

        </sectionGroup>
    </configSections>
</configuration>

Notice that within the configuration element, the first child should be the configSections element. Replace "YourProjectName" with the actual project name in the name property of the section element.

This arrangement ensures that the application settings can be correctly loaded and utilized by ConfigurationManager. By correcting the configuration file, you can eliminate the "Configuration system failed to initialize" error and successfully access your connection string.

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