SocketErrorStatus SocketErrorStatus SocketErrorStatus SocketErrorStatus SocketErrorStatus Enum


Specifies status values for a socket operation.

public : enum class SocketErrorStatus
enum class winrt::Windows::Networking::Sockets::SocketErrorStatus : int32_t
public enum SocketErrorStatus
Public Enum SocketErrorStatus
var value = Windows.Networking.Sockets.SocketErrorStatus.addressAlreadyInUse;

Windows 10 requirements

Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


AddressAlreadyInUse AddressAlreadyInUse AddressAlreadyInUse AddressAlreadyInUse AddressAlreadyInUse 10

The address is already in use.

AddressFamilyNotSupported AddressFamilyNotSupported AddressFamilyNotSupported AddressFamilyNotSupported AddressFamilyNotSupported 4

The address family is not supported.

CannotAssignRequestedAddress CannotAssignRequestedAddress CannotAssignRequestedAddress CannotAssignRequestedAddress CannotAssignRequestedAddress 11

Cannot assign requested address.

CertificateCommonNameIsIncorrect CertificateCommonNameIsIncorrect CertificateCommonNameIsIncorrect CertificateCommonNameIsIncorrect CertificateCommonNameIsIncorrect 25

The certificate is not valid for the requested usage. This error is also returned if the certificate has an invalid name. The name is not included in the permitted list or is explicitly excluded.

CertificateExpired CertificateExpired CertificateExpired CertificateExpired CertificateExpired 23

A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file. This error is also returned if the validity periods of the certification chain do not nest correctly.

CertificateIsInvalid CertificateIsInvalid CertificateIsInvalid CertificateIsInvalid CertificateIsInvalid 30

The supplied certificate is invalid. This can be returned for a number of reasons:

  • A certificate that can only be used as an end-entity is being used as a CA or vice versa.
  • A path length constraint in the certification chain has been violated.
  • A certificate contains an unknown extension that is marked critical.
  • A certificate is being used for a purpose other than the ones specified by its CA.
  • A parent of a given certificate in fact did not issue that child certificate.
  • A certificate is missing or has an empty value for an important field, such as a subject or issuer name.
  • The signature of the certificate cannot be verified.
  • The certificate has an invalid policy.
  • A certificate's basic constraint extension has not been observed.
CertificateNoRevocationCheck CertificateNoRevocationCheck CertificateNoRevocationCheck CertificateNoRevocationCheck CertificateNoRevocationCheck 28

The revocation function was unable to check revocation for the certificate.

CertificateRevocationServerOffline CertificateRevocationServerOffline CertificateRevocationServerOffline CertificateRevocationServerOffline CertificateRevocationServerOffline 29

The revocation function was unable to check revocation because the revocation server was offline.

CertificateRevoked CertificateRevoked CertificateRevoked CertificateRevoked CertificateRevoked 27

A certificate was explicitly revoked by its issuer. This error is also returned if the certificate was explicitly marked as untrusted by the user.

CertificateUntrustedRoot CertificateUntrustedRoot CertificateUntrustedRoot CertificateUntrustedRoot CertificateUntrustedRoot 24

A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. This error is also returned if a certificate chain could not be built to a trusted root authority.

CertificateWrongUsage CertificateWrongUsage CertificateWrongUsage CertificateWrongUsage CertificateWrongUsage 26

The certificate is not valid for the requested usage.

ClassTypeNotFound ClassTypeNotFound ClassTypeNotFound ClassTypeNotFound ClassTypeNotFound 9

The specified class was not found.

ConnectionRefused ConnectionRefused ConnectionRefused ConnectionRefused ConnectionRefused 12

The connection was refused.

ConnectionResetByPeer ConnectionResetByPeer ConnectionResetByPeer ConnectionResetByPeer ConnectionResetByPeer 18

The connection was reset by the peer.

ConnectionTimedOut ConnectionTimedOut ConnectionTimedOut ConnectionTimedOut ConnectionTimedOut 3

A connection timeout was exceeded.

HostIsDown HostIsDown HostIsDown HostIsDown HostIsDown 19

The host is down.

HostNotFound HostNotFound HostNotFound HostNotFound HostNotFound 6

The host was not found.

HttpInvalidServerResponse HttpInvalidServerResponse HttpInvalidServerResponse HttpInvalidServerResponse HttpInvalidServerResponse 2

A bad response was received from the HTTP server.

MessageTooLong MessageTooLong MessageTooLong MessageTooLong MessageTooLong 22

A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram was smaller than the datagram itself.

NetworkDroppedConnectionOnReset NetworkDroppedConnectionOnReset NetworkDroppedConnectionOnReset NetworkDroppedConnectionOnReset NetworkDroppedConnectionOnReset 16

The network dropped connection on reset.

NetworkIsDown NetworkIsDown NetworkIsDown NetworkIsDown NetworkIsDown 15

The network is down.

NetworkIsUnreachable NetworkIsUnreachable NetworkIsUnreachable NetworkIsUnreachable NetworkIsUnreachable 13

The network is unreachable.

NoAddressesFound NoAddressesFound NoAddressesFound NoAddressesFound NoAddressesFound 20

The pipe is being closed.

NoDataRecordOfRequestedType NoDataRecordOfRequestedType NoDataRecordOfRequestedType NoDataRecordOfRequestedType NoDataRecordOfRequestedType 7

The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for.

NonAuthoritativeHostNotFound NonAuthoritativeHostNotFound NonAuthoritativeHostNotFound NonAuthoritativeHostNotFound NonAuthoritativeHostNotFound 8

This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.

OperationAborted OperationAborted OperationAborted OperationAborted OperationAborted 1

The operation was aborted.

SocketTypeNotSupported SocketTypeNotSupported SocketTypeNotSupported SocketTypeNotSupported SocketTypeNotSupported 5

The socket type is not supported.

SoftwareCausedConnectionAbort SoftwareCausedConnectionAbort SoftwareCausedConnectionAbort SoftwareCausedConnectionAbort SoftwareCausedConnectionAbort 17

Software caused a connection abort.

TooManyOpenFiles TooManyOpenFiles TooManyOpenFiles TooManyOpenFiles TooManyOpenFiles 21

Too many open files.

Unknown Unknown Unknown Unknown Unknown 0

The socket status is unknown.

UnreachableHost UnreachableHost UnreachableHost UnreachableHost UnreachableHost 14

The host is unreachable.


An error encountered on socket operation is returned as HRESULT value. The SocketError.GetStatus method is used to convert an error from a socket operation to a SocketErrorStatus enumeration value. Most of the SocketErrorStatus enumeration values correspond to an error returned by the native Windows sockets operation.

See also