Perhaps a script enabled the Firewall option? You may have enabled it accidentally I guess, or someone else with access to your computer did it. Either way, type /firewall off and your problem should be solved
Regards,
i did this and now it says it is being blocked by my firewall. i know you can turn it off but last time i did that my computer got completly screwed up. it was working fine bout a week ago. are there any other ways to fix it? thanks