What could be the error when connecting MySQL to VS 2017?

Question

MySQL

In general, there is a database on hand (a trial one was also created for tests, the same result), which you need to attach to VS 2017 and rivet the interface in c#. In general, the task is quite simple, but I ran into the "You have a usable connection already" error, which does not allow me to connect to the database.
All required connectors have been updated to the latest versions (tried with both old (1.2.7) and new (2.0.5)), but no result, connector to NET 8.0 (latest version), I also tried to downgrade it to 6.9. 9, 6.9.8, the errors there are completely different, but even after editing them, "You have a usable connection already" does not disappear.
Has anyone experienced this and are there any solutions?

Answer 1

The database driver must also be downloaded and installed. There are also connectors that do not work in 64-bit applications.