The most common problem for applications of this kind is related to security rights. To fix the issue, completely uninstall Quick Heal from your computer, then download a new package from its official website. Once the package has been downloaded, make sure that you are logged on with an Administrator user. To install it, right click the setup package and select Run as Administrator, then confirm the installation. Follow the instructions presented by the installer and the application should be installed normally. A reboot is also necessary since the software requires access to system files and this can be done through a reboot.