Please disable the Encrypt Connections. You can click OK button in error prompt dialog, you'll be directly prompted to turn off encryption. Or you can go to File->Options and Settings -> Data Source Settings, choose current data source and select Edit and uncheck "Encrypt Connections" option.
Here are two similar threads:
Thks a lot for your answer.
I've try your solution, ant dont have the message any more but don't connect to my bases....
when the encrypt connection is uncheck, PBI cannot authenticate with credentials provide.
when I try the login and password on phpmyadmin it works. So mysterious for me ! :-(
What error message did you get when you attempted to connect to MySQL DB after unchecking encrypt connection?
How did you connect to MySQL DB? Please provide more description about your operations.