12044

Returned by WinHttpReceiveResponse when the server requests client authentication. Windows Server 2003 with SP1 and Windows XP with SP2: This error is not supported. The server requires SSL client Authentication. The application retrieves the list of certificate issuers by calling WinHttpQueryOption with the WINHTTP_OPTION_CLIENT_CERT_ISSUER_LIST option. For more information, see the WINHTTP_OPTION_CLIENT_CERT_ISSUER_LIST option. If the server requests the client certificate, but does not require it, the application can alternately call WinHttpSetOption with the WINHTTP_OPTION_CLIENT_CERT_CONTEXT option. In this case, the application specifies the WINHTTP_NO_CLIENT_CERT_CONTEXT macro in the *lpBuffer* parameter of WinHttpSetOption. For more information, see the WINHTTP_OPTION_CLIENT_CERT_CONTEXT option. Windows Server 2003 with SP1 and Windows XP with SP2: This error is not supported.