ConfigurationException Class

The exception that is thrown when a configuration system error has occurred.

Namespace: System.Configuration
Assembly: System (in system.dll)

public class ConfigurationException : SystemException
/** @attribute SerializableAttribute() */ 
public class ConfigurationException extends SystemException
public class ConfigurationException extends SystemException

The ConfigurationException exception is thrown if the application attempts to read or write data to the configuration file but is unsuccessful. Some possible reasons for this can include malformed XML in the configuration file, file permission issues, and configuration properties with values that are not valid.


The ConfigurationException object is maintained for backward compatibility. The ConfigurationErrorsException object replaces it for the configuration system.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0