In InstallShield Spring 2012 edition, when the installation got to the point where the security program with the Shield logo was necessary to allow changes to be made from an unknown publisher, that process started automatically and the user simply needed to click the Yes button to continue.

In 2016 Express, that process does not start automatically and my elderly clientele does not know that they need to look for an external program and click on the Shield so that they can click Yes to continue the installation.

What caused the process to start in Spring 2012 and can that be duplicated in 2016 Express?

Also, why am I an unknown publisher when I have installed a code signing certificate and when I click 'Show Details' it shows me as the publisher?