Never mind about the link.
I told you that it was a firewall trouble… Better than disabling it you may try to configurate it well. I recommend you uninstall it, boot and install again a ‘fresh’ installation.
When a program ask for permition to connect the Internet, you can choose ‘Yes’ and click the ‘remember’ option… But, generally, if a program asks for ‘server rights’ do not allow it. You don’t use a proxy filter (which is the only one who needs server rights).
If you need more help, we’ll be here.