How to turn off Java applets

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  • Creator: AliceWyman
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  • Reviewed by: AliceWyman
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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 Embedding Plug-InJava Plug-in 2 for NPAPI Browsers (Mac OS 10.5 & 10.6) or Java Applet Plug-in (Mac OS 10.7)Java plugin to select it.
  3. Click on the Disable button (if the button says Enable, Java is already disabled).

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