with avast free antivirus I’m unble to change the settings of zone alarm free firewall, for do it I must delete avast and after reboot I can do it, if I reinstall avast again I’m unable to do it again.
https://www.zonealarm.com/forums/attachment.php?attachmentid=227&d=1383167486
Drop ZA, it’s outdated. Better free FWs are available.
Zonealarm is regularly updated but is quite heavy on the system.
I agree there are better free options out there and i would suggest comodo firewall.
good tip 
also with 2014 9.0.2007.
I use ZA since 15 years and only now I’ve this issue.