Install ZoneAlarm Extreme Security Updated April 03, 2021 23:48 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. ZoneAlarm Extreme Security is a multi-device protection bundle that secures your entire digital life, now including our award-winning Anti-Ransomware technology and Mobile Security app for your Android or iOS mobile devices. Mobile devices Install ZoneAlarm Mobile Security for Android Install ZoneAlarm Mobile Security for iOS 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.