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A connection was successfully established with the server, but then an error occurred during the pre-login handshake (SQL User Experience Monitor)

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Hi Guys,

 

Hope someone will be able to shed some light on it in case you had something similar happened to you.

 

I have a lot of counters based on "SQL User Experience Monitor" component type across all our infrastructure. Some of them, randomly, on random servers, random SQL queries, would give the following error:

 

A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.)

 

I was not able to spot any patterns so far, but it makes my SQL monitors to roll over to "Down" state, which then triggers falls positive alerts. After a few minutes this would be resolved by itself, I guess by re-trying poll again.

 

Anyone has seen anything like that before? Any suggestions where can I start digging?

 

Thanks,
Alex


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