Basic help...

This is my virgin moment so ■■■■ away at me on this one!!!

I have been allowing a program access to my internet for a few months now, and included them access via Comodo Firewall.
However, I do not want to allow them acess anymore,so how do I block an “Allowed” program ?

Many thanks

Welcome

If an application rule has been created, you can change the settings by going to:

Firewall/Network Security Policy/Application Rules

Find the application in question and change the Allow to Block by editing the rule.