Internet Explorer (IE) has a new security feature, called ActiveX control blocking, to keep ActiveX controls, such as Java, up-to-date. This feature will prevent the app or web page from loading, if it finds that Java is out-of-date and will provide the option to update Java.
It is recommended you update Java before allowing the app to run. Click Update and download the latest Java version. If you don't trust the site or prompt, you can visit the java.com web site to get the latest version.The out-of-date ActiveX control blocking applies to:
Firefox implemented a new Click to Play security feature that protects against attacks, targeting plug-ins that are known to be vulnerable. This feature prevents applets from automatically loading and allows users to control what content they want to run or avoid.
» Click to Play on Firefox (mozilla.org)
Chrome browser versions 42 and above. Starting with Chrome version 42 (released April 2015), Chrome has disabled the standard way in which browsers support plugins. More info