How do I do to unblock Windows Live Messenger?

My old brother blocked it for me, and I want to unblock it, please help!

How do I do to unblock Windows Live Messenger?windows mail

Try this:

Start %26gt; Control Panel %26gt; Security Center %26gt; Windows Firewall %26gt; Manage Security Settings for Windows Firewall %26gt; Advanced Tab %26gt; Restore Defaults

Should work!