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WebExceptionStatus Enum


Defines status codes for the WebException class.

This API supports the product infrastructure and is not intended to be used directly from your code.

public enum class WebExceptionStatus
public enum WebExceptionStatus
type WebExceptionStatus = 
Public Enum WebExceptionStatus


CacheEntryNotFound 18

The specified cache entry was not found.

ConnectFailure 2

The remote service point could not be contacted at the transport level.

ConnectionClosed 8

The connection was prematurely closed.

KeepAliveFailure 12

The connection for a request that specifies the Keep-alive header was closed unexpectedly.

MessageLengthLimitExceeded 17

A message was received that exceeded the specified limit when sending a request or receiving a response from the server.

NameResolutionFailure 1

The name resolver service could not resolve the host name.

Pending 13

An internal asynchronous request is pending.

PipelineFailure 5

The request was a pipelined request and the connection was closed before the response was received.

ProtocolError 7

The 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.

ProxyNameResolutionFailure 15

The name resolver service could not resolve the proxy host name.

ReceiveFailure 3

A complete response was not received from the remote server.

RequestCanceled 6

The request was canceled, the Abort() method was called, or an unclassifiable error occurred. This is the default value for Status.

RequestProhibitedByCachePolicy 19

The 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.

RequestProhibitedByProxy 20

This request was not permitted by the proxy.

SecureChannelFailure 10

An error occurred while establishing a connection using SSL.

SendFailure 4

A complete request could not be sent to the remote server.

ServerProtocolViolation 11

The server response was not a valid HTTP response.

Success 0

No error was encountered.

Timeout 14

No response was received during the time-out period for a request.

TrustFailure 9

A server certificate could not be validated.

UnknownError 16

An exception of unknown type has occurred.


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

Applies to

See also