MySQL Workbench install annoyance - you have to have windows firewall service running

When you try to install MySQL workbench on an Amazon EC2 server you receive a "cannot connect to firewall" error which causes the setup to fail.

I assume this is because setup wants to set FW exceptions, but of course Amazon EC2 servers have the firewall service disabled because they programmatically implement the firewall using the AWS control panel.

So to solve this you need to enable the firewall service, start it, run the setup, stop the service and again disable it.