Cry about...
Delphi Programming

WinInet errors

WinInet Errors

Value Symbolic Name Notes

12001 ERROR_INTERNET_OUT_OF_HANDLES

12002 ERROR_INTERNET_TIMEOUT

12003 ERROR_INTERNET_EXTENDED_ERROR Use InternetGetLastResponseInfo.

12004 ERROR_INTERNET_INTERNAL_ERROR

12005 ERROR_INTERNET_INVALID_URL

12006 ERROR_INTERNET_UNRECOGNIZED_SCHEME

12007 ERROR_INTERNET_NAME_NOT_RESOLVED The name could not be resolved. This means either that the name is invalid or that there is a problem with DNS (which is used to resolve the name to an IP address).

12008 ERROR_INTERNET_PROTOCOL_NOT_FOUND

12009 ERROR_INTERNET_INVALID_OPTION

12010 ERROR_INTERNET_BAD_OPTION_LENGTH

12011 ERROR_INTERNET_OPTION_NOT_SETTABLE

12012 ERROR_INTERNET_SHUTDOWN

12013 ERROR_INTERNET_INCORRECT_USER_NAME

12014 ERROR_INTERNET_INCORRECT_PASSWORD

12015 ERROR_INTERNET_LOGIN_FAILURE

12016 ERROR_INTERNET_INVALID_OPERATION

12017 ERROR_INTERNET_OPERATION_CANCELLED

12018 ERROR_INTERNET_INCORRECT_HANDLE_TYPE

12019 ERROR_INTERNET_INCORRECT_HANDLE_STATE

12020 ERROR_INTERNET_NOT_PROXY_REQUEST

12021 ERROR_INTERNET_REGISTRY_VALUE_NOT_FOUND

12022 ERROR_INTERNET_BAD_REGISTRY_PARAMETER

12023 ERROR_INTERNET_NO_DIRECT_ACCESS

12024 ERROR_INTERNET_NO_CONTEXT

12025 ERROR_INTERNET_NO_CALLBACK

12026 ERROR_INTERNET_REQUEST_PENDING

12027 ERROR_INTERNET_INCORRECT_FORMAT

12028 ERROR_INTERNET_ITEM_NOT_FOUND

12029 ERROR_INTERNET_CANNOT_CONNECT

12030 ERROR_INTERNET_CONNECTION_ABORTED The connection to the server has been terminated. This is a generic error. It can indicate a timeout.

12031 ERROR_INTERNET_CONNECTION_RESET Connection has been reset or unexpectedly closed at the remote end. Rebooting the remote server while downloading can produce this.

12032 ERROR_INTERNET_FORCE_RETRY WinInet needs to redo the request. For example, this can occur after a request has been made but WinInet receives an authentication challenge (from a server or proxy), after the authentication challenge has been handled, the request needs to be resent because the server/proxy does not remember the client's request.

12033 ERROR_INTERNET_INVALID_PROXY_REQUEST

12036 ERROR_INTERNET_HANDLE_EXISTS

12037 ERROR_INTERNET_SEC_CERT_DATE_INVALID

12038 ERROR_INTERNET_SEC_CERT_CN_INVALID

12039 ERROR_INTERNET_HTTP_TO_HTTPS_ON_REDIR

12040 ERROR_INTERNET_HTTPS_TO_HTTP_ON_REDIR

12041 ERROR_INTERNET_MIXED_SECURITY

12042 ERROR_INTERNET_CHG_POST_IS_NON_SECURE

12043 ERROR_INTERNET_POST_IS_NON_SECURE

12044 ERROR_INTERNET_CLIENT_AUTH_CERT_NEEDED

12045 ERROR_INTERNET_INVALID_CA

12046 ERROR_INTERNET_CLIENT_AUTH_NOT_SETUP

12047 ERROR_INTERNET_ASYNC_THREAD_FAILED

12048 ERROR_INTERNET_REDIRECT_SCHEME_CHANGE

12049 ERROR_INTERNET_DIALOG_PENDING

12050 ERROR_INTERNET_RETRY_DIALOG

12052 ERROR_INTERNET_HTTPS_HTTP_SUBMIT_REDIR

12053 ERROR_INTERNET_INSERT_CDROM

12157 ERROR_INTERNET_SECURITY_CHANNEL_ERROR General error indicating a problem with the security/SSL subsystem.

12158 ERROR_INTERNET_UNABLE_TO_CACHE_FILE

12159 ERROR_INTERNET_TCPIP_NOT_INSTALLED

12163 ERROR_INTERNET_DISCONNECTED Possibly working offline.

12164 ERROR_INTERNET_SERVER_UNREACHABLE

12165 ERROR_INTERNET_PROXY_SERVER_UNREACHABLE

12166 ERROR_INTERNET_BAD_AUTO_PROXY_SCRIPT

12167 ERROR_INTERNET_UNABLE_TO_DOWNLOAD_SCRIPT

12169 ERROR_INTERNET_SEC_INVALID_CERT

12170 ERROR_INTERNET_SEC_CERT_REVOKED

Value	Symbolic Name	Notes
12001	`ERROR_INTERNET_OUT_OF_HANDLES`
12002	`ERROR_INTERNET_TIMEOUT`
12003	`ERROR_INTERNET_EXTENDED_ERROR`	Use InternetGetLastResponseInfo.
12004	`ERROR_INTERNET_INTERNAL_ERROR`
12005	`ERROR_INTERNET_INVALID_URL`
12006	`ERROR_INTERNET_UNRECOGNIZED_SCHEME`
12007	`ERROR_INTERNET_NAME_NOT_RESOLVED`	The name could not be resolved. This means either that the name is invalid or that there is a problem with DNS (which is used to resolve the name to an IP address).
12008	`ERROR_INTERNET_PROTOCOL_NOT_FOUND`
12009	`ERROR_INTERNET_INVALID_OPTION`
12010	`ERROR_INTERNET_BAD_OPTION_LENGTH`
12011	`ERROR_INTERNET_OPTION_NOT_SETTABLE`
12012	`ERROR_INTERNET_SHUTDOWN`
12013	`ERROR_INTERNET_INCORRECT_USER_NAME`
12014	`ERROR_INTERNET_INCORRECT_PASSWORD`
12015	`ERROR_INTERNET_LOGIN_FAILURE`
12016	`ERROR_INTERNET_INVALID_OPERATION`
12017	`ERROR_INTERNET_OPERATION_CANCELLED`
12018	`ERROR_INTERNET_INCORRECT_HANDLE_TYPE`
12019	`ERROR_INTERNET_INCORRECT_HANDLE_STATE`
12020	`ERROR_INTERNET_NOT_PROXY_REQUEST`
12021	`ERROR_INTERNET_REGISTRY_VALUE_NOT_FOUND`
12022	`ERROR_INTERNET_BAD_REGISTRY_PARAMETER`
12023	`ERROR_INTERNET_NO_DIRECT_ACCESS`
12024	`ERROR_INTERNET_NO_CONTEXT`
12025	`ERROR_INTERNET_NO_CALLBACK`
12026	`ERROR_INTERNET_REQUEST_PENDING`
12027	`ERROR_INTERNET_INCORRECT_FORMAT`
12028	`ERROR_INTERNET_ITEM_NOT_FOUND`
12029	`ERROR_INTERNET_CANNOT_CONNECT`
12030	`ERROR_INTERNET_CONNECTION_ABORTED`	The connection to the server has been terminated. This is a generic error. It can indicate a timeout.
12031	`ERROR_INTERNET_CONNECTION_RESET`	Connection has been reset or unexpectedly closed at the remote end. Rebooting the remote server while downloading can produce this.
12032	`ERROR_INTERNET_FORCE_RETRY`	WinInet needs to redo the request. For example, this can occur after a request has been made but WinInet receives an authentication challenge (from a server or proxy), after the authentication challenge has been handled, the request needs to be resent because the server/proxy does not remember the client's request.
12033	`ERROR_INTERNET_INVALID_PROXY_REQUEST`
12036	`ERROR_INTERNET_HANDLE_EXISTS`
12037	`ERROR_INTERNET_SEC_CERT_DATE_INVALID`
12038	`ERROR_INTERNET_SEC_CERT_CN_INVALID`
12039	`ERROR_INTERNET_HTTP_TO_HTTPS_ON_REDIR`
12040	`ERROR_INTERNET_HTTPS_TO_HTTP_ON_REDIR`
12041	`ERROR_INTERNET_MIXED_SECURITY`
12042	`ERROR_INTERNET_CHG_POST_IS_NON_SECURE`
12043	`ERROR_INTERNET_POST_IS_NON_SECURE`
12044	`ERROR_INTERNET_CLIENT_AUTH_CERT_NEEDED`
12045	`ERROR_INTERNET_INVALID_CA`
12046	`ERROR_INTERNET_CLIENT_AUTH_NOT_SETUP`
12047	`ERROR_INTERNET_ASYNC_THREAD_FAILED`
12048	`ERROR_INTERNET_REDIRECT_SCHEME_CHANGE`
12049	`ERROR_INTERNET_DIALOG_PENDING`
12050	`ERROR_INTERNET_RETRY_DIALOG`
12052	`ERROR_INTERNET_HTTPS_HTTP_SUBMIT_REDIR`
12053	`ERROR_INTERNET_INSERT_CDROM`
12157	`ERROR_INTERNET_SECURITY_CHANNEL_ERROR`	General error indicating a problem with the security/SSL subsystem.
12158	`ERROR_INTERNET_UNABLE_TO_CACHE_FILE`
12159	`ERROR_INTERNET_TCPIP_NOT_INSTALLED`
12163	`ERROR_INTERNET_DISCONNECTED`	Possibly working offline.
12164	`ERROR_INTERNET_SERVER_UNREACHABLE`
12165	`ERROR_INTERNET_PROXY_SERVER_UNREACHABLE`
12166	`ERROR_INTERNET_BAD_AUTO_PROXY_SCRIPT`
12167	`ERROR_INTERNET_UNABLE_TO_DOWNLOAD_SCRIPT`
12169	`ERROR_INTERNET_SEC_INVALID_CERT`
12170	`ERROR_INTERNET_SEC_CERT_REVOKED`

FTP API Errors

Value Symbolic Name Notes

12110 ERROR_FTP_TRANSFER_IN_PROGRESS An operation is already in progress on the FTP session handle. Each session handle can support only one operation at a time.

12111 ERROR_FTP_DROPPED

12112 ERROR_FTP_NO_PASSIVE_MODE The server does not support passive mode.

Value	Symbolic Name	Notes
12110	`ERROR_FTP_TRANSFER_IN_PROGRESS`	An operation is already in progress on the FTP session handle. Each session handle can support only one operation at a time.
12111	`ERROR_FTP_DROPPED`
12112	`ERROR_FTP_NO_PASSIVE_MODE`	The server does not support passive mode.

Gopher API Errors

Value Symbolic Name

12130 ERROR_GOPHER_PROTOCOL_ERROR

12131 ERROR_GOPHER_NOT_FILE

12132 ERROR_GOPHER_DATA_ERROR

12133 ERROR_GOPHER_END_OF_DATA

12134 ERROR_GOPHER_INVALID_LOCATOR

12135 ERROR_GOPHER_INCORRECT_LOCATOR_TYPE

12136 ERROR_GOPHER_NOT_GOPHER_PLUS

12137 ERROR_GOPHER_ATTRIBUTE_NOT_FOUND

12138 ERROR_GOPHER_UNKNOWN_LOCATOR

Value	Symbolic Name
12130	`ERROR_GOPHER_PROTOCOL_ERROR`
12131	`ERROR_GOPHER_NOT_FILE`
12132	`ERROR_GOPHER_DATA_ERROR`
12133	`ERROR_GOPHER_END_OF_DATA`
12134	`ERROR_GOPHER_INVALID_LOCATOR`
12135	`ERROR_GOPHER_INCORRECT_LOCATOR_TYPE`
12136	`ERROR_GOPHER_NOT_GOPHER_PLUS`
12137	`ERROR_GOPHER_ATTRIBUTE_NOT_FOUND`
12138	`ERROR_GOPHER_UNKNOWN_LOCATOR`

HTTP API Errors

Value Symbolic Name

12150 ERROR_HTTP_HEADER_NOT_FOUND

12151 ERROR_HTTP_DOWNLEVEL_SERVER

12152 ERROR_HTTP_INVALID_SERVER_RESPONSE

12153 ERROR_HTTP_INVALID_HEADER

12154 ERROR_HTTP_INVALID_QUERY_REQUEST

12155 ERROR_HTTP_HEADER_ALREADY_EXISTS

12156 ERROR_HTTP_REDIRECT_FAILED

12160 ERROR_HTTP_NOT_REDIRECTED

12161 ERROR_HTTP_COOKIE_NEEDS_CONFIRMATION

12162 ERROR_HTTP_COOKIE_DECLINED

12168 ERROR_HTTP_REDIRECT_NEEDS_CONFIRMATION

Value	Symbolic Name
12150	`ERROR_HTTP_HEADER_NOT_FOUND`
12151	`ERROR_HTTP_DOWNLEVEL_SERVER`
12152	`ERROR_HTTP_INVALID_SERVER_RESPONSE`
12153	`ERROR_HTTP_INVALID_HEADER`
12154	`ERROR_HTTP_INVALID_QUERY_REQUEST`
12155	`ERROR_HTTP_HEADER_ALREADY_EXISTS`
12156	`ERROR_HTTP_REDIRECT_FAILED`
12160	`ERROR_HTTP_NOT_REDIRECTED`
12161	`ERROR_HTTP_COOKIE_NEEDS_CONFIRMATION`
12162	`ERROR_HTTP_COOKIE_DECLINED`
12168	`ERROR_HTTP_REDIRECT_NEEDS_CONFIRMATION`

Internet Autodial Errors

Value Symbolic Name

12171 ERROR_INTERNET_FAILED_DUETOSECURITYCHECK

Value	Symbolic Name
12171	`ERROR_INTERNET_FAILED_DUETOSECURITYCHECK`

Descriptions of the WinInet errors can be found on the Microsoft site at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wininet/wininet/wininet_errors.asp.

These notes are believed to be correct for Delphi 6 and may apply to other versions as well.

About the author: Brian Cryer is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.

Cry about... Delphi Programming