After updates from IT Analytics to support TLS 1.2, and even though ITA is actually setting the protocol to be 1.2 when connecting back to the SQL server, the actual connection is managed by the .Net Framework settings and unfortunately those for pre-4.6 version always defaults to TLS 1.0.
A fatal error occurred while creating an SSL Client Credential. The Internal Error State is 10013
Registry Entry Configurations Missing as per Microsoft recommendations.
IT Analytics for DLP 2.1.9
In order to make it work correctly, the following registry changes need to be applied:
This should resolve the TLS issues in play.
Note: Also see TECH251773 for other settings that may need to be enable for .NET to default to TLS 1.2