Plesk Error: PleskMainDBException

No one likes to see an error like the following when running the Plesk Panel:

ERROR: PleskMainDBException
No connection could be made because the target machine actively refused it.

0: common_func.php3:619
1: common_func.php3:582
2: auth.php3:14

It is basically a message indicating that Plesk cannot connect to MySQL. 

  1. Confirm both services (MySql Server and Plesk SQL Server) are running.
  2. Check Windows firewall rules
  3. Verify that the file \Plesk\MySQL\Data\my.ini is using the correct SQL port: 8306.

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