Unable to upgrade to SnapCenter 3.0 because communication with MySQL Server fails

Description

While upgrading to SnapCenter 3.0, the upgrade to MySQL Server is successful, but the SnapCenter Server fails to communicate with the MySQL Server. Therefore, the SnapCenter upgrade operation fails.

Error message

Exception: Cannot connect to MySQL server on localhost.

Workaround

You must manually uninstall MySQL Server and delete the MySQL folder in %programdata% before retrying the SnapCenter upgrade operation.