- Windows XP 32bit
- Windows Vista 32/64bit SP2
- Windows 7 32/64bit SP1
- Windows 8.1 32/64bit
- Windows 10 32/64bit
Note: ZoneAlarm does not support any server OS or Windows 98, ME, NT and 2000.
ZoneAlarm does not support Macintosh or Linux.
However, ZoneAlarm does believe that protecting your computer with a personal firewall solution is important. ZoneAlarm encourages you to seek a solution that will protect your computers from Internet hackers, Trojan horse type viruses and other threats from Internet connectivity