Free Download ZoneAlarm Uninstall - Remove all ZoneAlarm products installed on your computer and delete leftover data as well. Somehow ZoneAlarm has been added to Firefox. I removed ZoneAlarm from control panel and from Mozilla Firefox add-ons but it is still there. Uninstalling ZoneAlarm Free Antivirus + Firewall. To uninstall ZoneAlarm Free Antivirus + Firewall: Open the Programs section of the Windows Control Panel. To perform a Firefox restart after the add-on removal, click the ''Restart now'' link in the message. Once the Add-on Manager has opened in a new tab, click the ''Extensions'' button on the left side of the window. Microsoft Windows 7, Microsoft Windows Vista Windows 8 Classic View. In principle you have agreed and signed up to the rules of this board to be able to post here. To remove an extension from Firefox, simply click the ''Remove'' button. However just this moment I clicked on the down arrow in the box which lists the various search engines and ZoneAlarm is listed. Right click on the program icon in system tray, in the appeared menu, select Exist.