Explorer bloked Download image on the start page Firefox
previously delited Firefox, can't be reinstalled, Hotmail can't be open, google map doesn't start...
Opaite Mbohovái (1)
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, maybe after detecting changes (update) to the Firefox program. Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox. See Server Not Found - Troubleshoot connection problems and Configure firewalls so that Firefox can access the Internet and http://kb.mozillazine.org/Firewalls