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How can I run or activate Java in the browser?


This article applies to:
  • Platform(s): Windows 8, Windows 7, Vista, Windows XP, Windows 2000, Macintosh OS X
  • Browser(s): Firefox, Chrome
  • Java version(s): 7.0

Firefox - Activate Java plug-in

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.

  • If you try to run a Java applet using a Java plug-in version that is identified as vulnerable, Firefox will prevent the applet from automatically loading and alert you that the plug-in is vulnerable.
  • If an update is available, Firefox will provide the option to update or activate the plug-in. We recommend checking for updates before activating the plug-in.
  • Additionally, Firefox provides an option to block or automatically activate the plug-in on a per-site basis.

» Click to Play on Firefox (mozilla.org)


Chrome - Run Java plug-in

The Chrome browser blocks Java plug-in versions that are out of date or have been identified with security risks. A message notifies you that the plug-in is blocked.

Plug-in out of date

We recommend updating the plug-in before allowing the plug-in to run.

Java(TM) needs your permission to run
  • If you choose to Run this time, the plug-in will run but you will be asked for permission the next time you visit the site
  • If you choose Always run on this site, the plug-in will run and not ask for permission when you visit the site again.

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» Chrome out of date plug-in (support.google.com)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)

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