Hi,
which versions of MySQL-Database and MySQL JDBC driver are you using?
Can you download latest MySQL JDBC driver from Oracle, place it under WmJDBCAdapter/code/jars, reload the WmJDBCAdapter package and try again?
Additionally check for Fixes for JDBC Adapter.
For further assistance, please share a screenshot of your JDBC connection configuration screen.
On the other side you can check the MySQL server to see if you can configure another auth protocol which can be understood by JDBC Adapter.
Regards,
Holger
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