Find out which TLS version is used for SQL Server Connections

20 Apr 2021 37758 views 0 minutes to read Contributors

Create an Extended Event to find the TLS version

CREATE EVENT SESSION [tls] ON SERVER
ADD EVENT sqlsni.trace(
WHERE (([sqlserver].[like_i_sql_unicode_string]([text],N'%Handshake%TLS1.0%'))
OR ([sqlserver].[like_i_sql_unicode_string]([text],N'%Handshake%TLS1.1%'))
OR ([sqlserver].[like_i_sql_unicode_string]([text],N'%Handshake%TLS1.2%'))
))
ALTER EVENT SESSION [tls] ON SERVER
ADD TARGET package0.ring_buffer(SET max_events_limit=(100000),max_memory=(10240))
WITH (MAX_MEMORY=10240 KB,STARTUP_STATE=ON)
GO
ALTER EVENT SESSION tls ON SERVER STATE = START;

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