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WebExceptionStatus Enumeration

Defines status codes for the WebException class.

Namespace:  System.Net
Assembly:  System (in System.dll)

public enum class WebExceptionStatus

Member nameDescription
CacheEntryNotFoundThe specified cache entry was not found.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsConnectFailureThe remote service point could not be contacted at the transport level.
ConnectionClosedThe connection was prematurely closed.
KeepAliveFailureThe connection for a request that specifies the Keep-alive header was closed unexpectedly.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsMessageLengthLimitExceededA message was received that exceeded the specified limit when sending a request or receiving a response from the server.
NameResolutionFailureThe name resolver service could not resolve the host name.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsPendingAn internal asynchronous request is pending.
PipelineFailureThe request was a piplined request and the connection was closed before the response was received.
ProtocolErrorThe response received from the server was complete but indicated a protocol-level error. For example, an HTTP protocol error such as 401 Access Denied would use this status.
ProxyNameResolutionFailureThe name resolver service could not resolve the proxy host name.
ReceiveFailureA complete response was not received from the remote server.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsRequestCanceledThe request was canceled, the WebRequest::Abort method was called, or an unclassifiable error occurred. This is the default value for Status.
RequestProhibitedByCachePolicyThe request was not permitted by the cache policy. In general, this occurs when a request is not cacheable and the effective policy prohibits sending the request to the server. You might receive this status if a request method implies the presence of a request body, a request method requires direct interaction with the server, or a request contains a conditional header.
RequestProhibitedByProxyThis request was not permitted by the proxy.
SecureChannelFailureAn error occurred while establishing a connection using SSL.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsSendFailureA complete request could not be sent to the remote server.
ServerProtocolViolationThe server response was not a valid HTTP response.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsSuccessNo error was encountered.
TimeoutNo response was received during the time-out period for a request.
TrustFailureA server certificate could not be validated.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsUnknownErrorAn exception of unknown type has occurred.

The WebExceptionStatus enumeration defines the status codes assigned to the Status property.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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