Install ZoneAlarm Pro Firewall Updated December 15, 2020 07:59 Note: To install ZoneAlarm, you must first uninstall any other Firewall software. Otherwise, you may experience OS stability and computer performance issues. ZoneAlarm is only compatible with MS Windows Defender. See if your device complies with the System requirements. ZoneAlarm Pro Firewall gives you full control over your firewall, enabling you to configure it to your security needs by classifying your network settings. It targets and defeats new and advanced attacks that other firewalls miss, giving you maximum security against zero-day attacks. Installation on PC: Click the link below to download your software:DOWNLOAD Double click and Run the downloaded installer file.Look for an icon similar to below without the version number blurred. Click Quick install to begin the Installation process Review the ZoneAlarm End-User License Agreement and click Agree ZoneAlarm will now Download, Install and Configure automatically. Your software is now installed. Click Finish to complete the installation.If prompted to Restart, then click YES to restart your PC to complete the installation.