How Do You Unblock A Firewall?

Hi there, I have blocked a pop-up message and subsequently deleted it.  I now am trying to install an Antivirus application, however, it tells me to ensure the fact.exe application can access the internet and is not blocked.  I do not know what to do, can you help ??

To unblock a firewall in control panel go to network connections, from there click on Local Area Connection icon. A dialog box will open, in that click on the properties option; it will open another dialog box, in that dialog box click on advance.

Once you click on advance it will give you an option for enabling or disabling the fire wall, click on the disable firewall option to unblock it. A firewall basically is an information technology security appliance which is configured to allow, deny or proxy data connections which have been set-up and arranged by the organization's security policy. Firewalls can be either hardware or software based and its fundamental duty is to manage traffic among computer networks with diverse zones of trust.

How do i unblock a firewall yo play my hp games ?