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InvalidCredentialException Class

The exception that is thrown when authentication fails for an authentication stream and cannot be retried.

Namespace: System.Security.Authentication
Assembly: System (in system.dll)

public class InvalidCredentialException : AuthenticationException
/** @attribute SerializableAttribute() */ 
public class InvalidCredentialException extends AuthenticationException
public class InvalidCredentialException extends AuthenticationException
Not applicable.

The NegotiateStream and SslStream classes throw this exception when authentication fails. This exception indicates that the underlying stream is not in a valid state and you cannot retry the authentication using the NegotiateStream or SslStream instance. If you can retry the authentication, an AuthenticationException is thrown instead of the InvalidCredentialException.


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 Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0