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 This feature will prevent the app or web page from loading, if it finds that Java is out-of-date and will provide the option to update Java.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 If you don't trust the site or prompt, you can visit the java.com web site to get the latest version.The out-of-date ActiveX control blocking applies to: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
The Chrome browser blocks Java plug-in versions that are out of date or have been identified with security risks. In order to run the plug-in, you will need to respond to a message or an icon displayed near the address bar of the Chrome browser. Clicking on the icon will display Plug-ins were blocked on this page and plug-in options.
We recommend updating the plug-in before allowing the plug-in to run.
You can choose to always run the plug-ins on the site, continue blocking the plug-ins, or run the plug-ins only for the session.
In addition, you can customize how Chrome handles plug-ins (Click to Play or Block All) under Chrome Content Settings.
» Chrome plug-in (support.google.com)
» Chrome out of date plug-in (support.google.com)
» Chrome blocked plug-in (support.google.com)