Event ID 36887 Source SChannel - MyEventlog

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EventSentry Real-Time Event Log Monitoring Event submitted by Event Log Doctor Event ID: 36887 Source: SChannel Message: The following fatal alert was received: 42.

Recommended Links

• Schannel SSP Technical Overview

Solution by Event Log Doctor

2015-01-22 16:30:03 UTC

SChannel is a Windows SSP (Security Support Provider), similar to Kerberos and NTLM. SChannel provides SSL/TLS communication through the SSPI (Security Support Provider Interface) for applications like Internet Explorer, IIS, SQL Management Studio and many more. Schannel event logging can be controlled through the registry, and by default logs only "Errors" (http://support.microsoft.com/kb/260729). On workstations, Schannel errors can usually be ignored. Common error codes depicted in Schannel events are as follows: TLS1_ALERT_CLOSE_NOTIFY (0) TLS1_ALERT_UNEXPECTED_MESSAGE (10) TLS1_ALERT_BAD_RECORD_MAC (20) TLS1_ALERT_DECRYPTION_FAILED (21) TLS1_ALERT_RECORD_OVERFLOW (22) TLS1_ALERT_DECOMPRESSION_FAIL (30) TLS1_ALERT_HANDSHAKE_FAILURE (40) TLS1_ALERT_BAD_CERTIFICATE (42) TLS1_ALERT_UNSUPPORTED_CERT (43) TLS1_ALERT_CERTIFICATE_REVOKED (44) TLS1_ALERT_CERTIFICATE_EXPIRED (45) TLS1_ALERT_CERTIFICATE_UNKNOWN (46) TLS1_ALERT_ILLEGAL_PARAMETER (47) TLS1_ALERT_UNKNOWN_CA (48) TLS1_ALERT_ACCESS_DENIED (49) TLS1_ALERT_DECODE_ERROR (50) TLS1_ALERT_DECRYPT_ERROR (51) TLS1_ALERT_EXPORT_RESTRICTION (60) TLS1_ALERT_PROTOCOL_VERSION (70) TLS1_ALERT_INSUFFIENT_SECURITY (71) TLS1_ALERT_INTERNAL_ERROR (80) TLS1_ALERT_USER_CANCELED (90) TLS1_ALERT_NO_RENEGOTIATION (100) TLS1_ALERT_UNSUPPORTED_EXT (110)

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