• Insert the installation CD/DVD into the drive and click Quick Heal Installer.app or download the installation package from the Quick Heal website.
• To launch the installer, click Quick Heal Total Security Multi-Device.dmg. Follow the instructions on installation screen and then click Next to continue.
• The Read Me file and the End-User License Agreement screen appears and click Agree to continue.

macOS High Sierra 10.13 introduces a new feature that requires user approval before loading newly-installed third-party kernel extensions (KEXTs). When a request is made to load a KEXT that the user has not yet approved, the load request is denied

NOTE: If you do not Allow to load Kernel Extensions, Quick Heal Total Security will not be able to secure your computer against viruses, malicious websites, spam emails, and suspicious programs. Your computer will be at risk.

1. During installation of Quick Heal Total Security for Mac on new macOS 10.13 , the following "System Extension Block" prompt appears.
   
   
2. To resolve, goto System Preferences>>Security & Privacy,
3. Click the lock to make changes.
   [You may need to enter your system credentials.]
4. Click Allow to allow system extensions to be installed.
   
   
5. After allowing, restart the System.

If you already have Quick Heal Total Security for MAC installed on your Mac System, Total Security will continue to work well after you upgrade to macOS 10.13 High Sierra.