Connection Failed With Error 772

Jack Vamvas investigates an error when trying to connect to SQL Server 2016 on Windows Server 2016:

Question: I’ve upgraded an application with a built – in Database API . When attempting to establish a SQL Server database connection this error appears – Connection failed – SQL Server Error 772 – TCPIP Socket

Upon investigation the application was using  the native drivers attempting to connect to a SQL Server 2016 \ Windows 2016

As part of the testing I downloaded the ODBC 13.1 SQL Server drivers – independent of the application and tested a DSN connection to the same SQL Server – and it connected OK. I then created a DSN with native drivers and the error reappeared.

What is going on ? How can I fix this issue?

Read on for the solution and keep those drivers up to date.

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