But in both cases, I ended up with
I've tried to check the network connection between the machines and they're able to ping each other successfully.
Disabled the antiviruses and Firewalls on both systems
Added an alias for the slave to access the master machine, Working.
Both machines using 3306 port for mysql.
Last_IO_error: error connecting to master 'firstname.lastname@example.org:3306' -- retry-time 60 retries: 1