How to turn off Java applets

Revision Information
  • Revision id: 42739
  • Created:
  • Creator: Michael Verdi
  • Comment: Always Activate > Never Activate (we want to disable)
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Verdi
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: Verdi
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Revision Content

This article explains how to disable the Java plugin in Firefox so that Java applets no longer run.

By default, Firefox allows Java applets to launch automatically. However, you may decide that you do not want Java applets to run. To disable Java applets in Firefox:

  1. Click the menu button Fx89menuButton, click Add-ons and themes and select Plugins.
  2. Click on the Java (TM) Platform pluginJava Plug-in 2 for NPAPI Browsers (Mac OS 10.5 & 10.6) or Java Applet Plug-in (Mac OS 10.7 and above)Java plugin to select it.
  3. Click on the Disable button (if the button says Enable, Java is already disabled).
  1. Click the menu button Fx89menuButton, click Add-ons and themes and select Plugins.
  2. Click on the Java (TM) Platform pluginJava Plug-in 2 for NPAPI Browsers (Mac OS 10.5 & 10.6) or Java Applet Plug-in (Mac OS 10.7 and above)Java plugin to select it.
  3. Select Never Activate in its drop-down menu if it's not already set.

Java applets will no longer be permitted to launch in Firefox.