Plesk for Windows is not accessible: No connection could be made because the target machine actively refused it

Symptoms

1. Plesk is not accessible:

   PLESK_INFO: ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it.
   Additionally, an exception has occurred while trying to report this error: Zend_Exception
   No entry is registered for key & #039 ;translate& #039 ; (Abstract.php:144)

2. "bind-address" parameter value in %plesk_dir%MySQL\my.ini differs from the 127.0.0.1:

   CONFIG_TEXT: bind-address=203.0.113.2

Cause

Incorrect IP address binding in Plesk SQL Server configuration. Therefore, Plesk fails to connect to SQL Server service on address 127.0.0.1.

Resolution

Note: if you don't have administrative access to Plesk server via RDP, contact your hosting provider regarding the issue

Login to the server over RDP and remove "bind-address" directive from %plesk_dir%MySQL\my.ini.