After MySQL server upgrade to version 5.6, Plesk keeps showing its version as 5.1 on Server Components page. Plesk stops MySQL Service and sets its startup type to
Refresh icon is pressed on Server Components.
A registry hive name
HKLM\SOFTWARE\Wow6432Node\PLESK\Installer\mysql51-server-configurator was not upgraded due to MySQL server upgrade failure.
Rename the registry hive name, as shown below: