Install ZoneAlarm Free Antivirus + Firewall Updated December 16, 2020 05:15 Note: To install ZoneAlarm, you must first uninstall any other Antivirus or 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. NEW v3.5 Legacy v15.x ZoneAlarm Free Antivirus + Firewall protects you from viruses, malware, spyware, and other cyber threats. Installation on PC: Click the link below to download your softwareDOWNLOAD Double click and Run the downloaded installer file.Look for an icon similar to below. Downloading will begin. This can take a few minutes to complete. End User License Agreement click the Accept and Install button. Installing ZoneAlarm Extreme NextGen can take several minutes. When the installation has completed the above dialog will disappear and you will see and you will see ZoneAlarm Free Antivirus + Firewall will open on your PC's desktop. There will also be a shortcut placed on your desktop. ZoneAlarm Free Antivirus + Firewall protects you from viruses, malware, spyware, and other cyber threats while securing your identity and privacy from hackers. It allows you to search the web safely, download clean files only, and avoid phishing attacks before they happen. Installation on PC: Note: The legacy 15.x version is no longer available to download. To download and install the new 3.5 version click here. If you kept a copy of the installer for the legacy version and wish to install please follow the steps below. Double click and Run the downloaded installer file.Look for an icon similar to below without the version number blurred. Accept ZoneAlarm privacy policy and click Quick install to begin the Installation process. Review the ZoneAlarm End-User License Agreement and Click Agree. To install Web Secure Chrome browser extension select Add to Chrome or Skip. 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.