当从传输层安全性（TLS）或安全套接字层（SSL）协议接收相应的警报时，Schannel 将返回以下错误消息。 错误消息在 Winerror.h 中定义。
| TLS 或 SSL 警报 | Schannel 错误代码 |
|---|---|
| SSL3_ALERT_UNEXPECTED_MESSAGE 10 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_BAD_RECORD_MAC 20 |
SEC_E_MESSAGE_ALTERED 0x8009030F |
| TLS1_ALERT_DECRYPTION_FAILED 21 |
SEC_E_DECRYPT_FAILURE 0x80090330 |
| TLS1_ALERT_RECORD_OVERFLOW 22 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| SSL3_ALERT_DECOMPRESSION_FAIL 30 |
SEC_E_MESSAGE_ALTERED 0x8009030F |
| SSL3_ALERT_HANDSHAKE_FAILURE 40 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_BAD_CERTIFICATE 42 |
SEC_E_CERT_UNKNOWN 0x80090327 |
| TLS1_ALERT_UNSUPPORTED_CERT 43 |
SEC_E_CERT_UNKNOWN 0x80090327 |
| TLS1_ALERT_CERTIFICATE_REVOKED 44 |
CRYPT_E_REVOKED 0x80092010 |
| TLS1_ALERT_CERTIFICATE_EXPIRED 45 |
SEC_E_CERT_EXPIRED 0x80090328 |
| TLS1_ALERT_CERTIFICATE_UNKNOWN 46 |
SEC_E_CERT_UNKNOWN 0x80090327 |
| SSL3_ALERT_ILLEGAL_PARAMETER |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_UNKNOWN_CA 48 |
SEC_E_UNTRUSTED_ROOT 0x80090325 |
| TLS1_ALERT_ACCESS_DENIED 49 |
SEC_E_LOGON_DENIED 0x8009030C |
| TLS1_ALERT_DECODE_ERROR 50 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_DECRYPT_ERROR 51 |
SEC_E_DECRYPT_FAILURE 0x80090330 |
| TLS1_ALERT_EXPORT_RESTRICTION 60 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_PROTOCOL_VERSION 70 |
SEC_E_UNSUPPORTED_FUNCTION 0x80090302 |
| TLS1_ALERT_INSUFFIENT_SECURITY 71 |
SEC_E_ALGORITHM_MISMATCH 0x80090331 |
| TLS1_ALERT_INTERNAL_ERROR 80 |
SEC_E_INTERNAL_ERROR 0x80090304 |
| TLS1_ALERT_USER_CANCELED 90 |
SEC_E_UNFINISHED_CONTEXT_DELETED 0x80090333 |
| TLS1_ALERT_NO_RENEGOTIATION 100 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_UNSUPPORTED_EXT 110 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_UNKNOWN_PSK_IDENTITY 115 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |
| TLS1_ALERT_NO_APP_PROTOCOL 120 |
SEC_E_ILLEGAL_MESSAGE 0x80090367 |
| 默认 |
SEC_E_ILLEGAL_MESSAGE 0x80090326 |