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Use plugins to play audio, video, games and more

Support will end for all NPAPI plugins except for Flash in March 2017, when Firefox version 52 is released. See this compatibility document and this article for details.

Beginning with Firefox version 52, support has ended for all NPAPI plugins except for Adobe Flash. See this compatibility document and this article for details.

Plugins are Firefox add-ons that manage Internet content that Firefox is not designed to process. This article describes how to use and manage plugins in Firefox.

What are plugins?

A plugin is a piece of software that manages Internet content that Firefox is not designed to process. These usually include patented formats for video, audio, online games, presentations, and more. Plugins are created and distributed by other companies.

Popular plugins

For instructions of how to install, use, and troubleshoot plugins in Firefox, see these articles:

Note: The 64-bit version of Firefox recognizes and supports only the Adobe Flash and Microsoft Silverlight NPAPI plugins.

How to update plugins

Plugins involve using code written by third-parties, so it is critically important to keep your plugins up-to-date. A security vulnerability in a plugin you have installed could compromise your privacy.

To check if any of your installed plugins are out of date, visit Mozilla's Plugin Check & Updates page.

Managing plugins

To see what plugins you have installed:

  1. Click the menu button New Fx Menu and choose Add-ons. The Add-ons Manager tab will open.

  2. In the Add-ons Manager tab, select the Plugins panel.

To disable a plugin, select a plugin in the list, then select Never Activate. Disabling a plugin will turn it off without uninstalling it. To re-enable it, select Always Activate.

Uninstalling plugins

  • Visit the article above that corresponds to the plugin you want to uninstall for instructions.
  • For instructions on how to manually uninstall a plugin, see Manually uninstalling a plugin

Troubleshooting

If you have problems with Firefox, they may be caused by a plugin or combination of plugins. For help on how to diagnose plugin problems, see Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems.

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Version History
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Comments

I fixed menu paths and broken links, added a summary and a keyword. It needs review.

Approved

I approved the last revision (40609) which removed "Adobe Shockwave" from the list of popular plugins. The Using the Shockwave plugin with Firefox article is now archived.

Firefox Win64 installers were made available for Firefox 40 Beta at https://www.mozilla.org/en-US/firefox/beta/all/ and should be available on https://www.mozilla.org/en-US/firefox/all/ for the Firefox 40 release. When Firefox 41 is released, Win64 installers will be available for download on mozilla.org .

We should add a note to this article (and to the linked Java, Silverlight, Adobe Reader, Windows Media Player, and QuickTime articles) that only the Flash plugin currently works in Firefox win64 builds.

Related bugs:

Bug 1165981 - Whitelist Flash for NPAPI on 64 bit Firefox on Win64

Bug 1187005 - Some plugins (Microsoft Silverlight, Java,...) are not recognized as installed with Firefox 64-bit build on Win64

Bug 1181014 - Make Firefox 41 win64 builds on the Release channel available on mozilla.org.

(For the record) Silverlight is now supported on Windows 64-bit Firefox. Related bug: Bug 1225293 - Support Silverlight for Win64 Firefox

The release target for Win64 builds was moved to Firefox 42. See bug 1181014 comment 12.

Windows 64-bit Firefox requires Windows 7 or above (bug 1093741).

I made a new revision to make the 64-bit Firefox notice about Adobe Flash {for fx42, win7,win8,win10} since the Windows 64-bit builds aren't scheduled for the release channel firefox/all page until at least Firefox 42.

I set up a " Needs change" entry for review.

Related bug: Bug 1225293 - Support Silverlight for Win64 Firefox ....which is linked from Bug 1187005 - Some plugins (Silverlight, Lync Web App, Java, ...) are not recognized as installed with Firefox 64-bit build on Win64 (comment 165) Quote:


Chris Peterson [:cpeterson] 2015-11-24 09:59:21 PST

64-bit Silverlight will be re-enabled in Firefox 44 by bug 1225293. \o/


Related discussion: https://support.mozilla.org/en-US/kb/use-silverlight-plugin-play-audio-and-video/discuss/6392

Note that the related bug was just approved for Firefox 45: Bug 1225293 - Support Silverlight for Win64 Firefox

P.S. I'll defer my pending revision,


{for win7,win8,win10} {for =fx42,=fx43}{warning}Important: The new 64-bit version of Firefox for Windows currently recognizes and supports only the Adobe Flash plugin. See this Mozilla blog post for details.{/warning}{/for} {for fx44}{warning}Important: The 64-bit version of Firefox for Windows currently recognizes and supports only the Adobe Flash and Microsoft Silverlight plugins.{/warning}{/for} {/for}


I think it's better to wait and confirm that the fix for Bug 1225293 - Support Silverlight for Win64 Firefox - was uplifted to Firefox 44, before editing the note. I have a "Needs change" entry set up for that.

The fix for Bug 1225293 - Support Silverlight for Win64 Firefox was uplifted to Firefox 43 and Firefox 44 so I'll edit the warning note.

bug 1187005 comment 167


Chris Peterson [:cpeterson] 2015-12-02 10:02:09 PST

(In reply to Alice Wyman from comment #166) > Chris, can you confirm whether this will take place in the Firefox 43 > release?

Yes, 64-bit Silverlight is now enabled in Firefox 43.

One caveat: at the moment, Amazon Video won't play because it still thinks 64-bit Firefox does not support Silverlight. But if you use an extension to change your User-Agent to look like 32-bit Firefox, then Amazon Video will play. I have asked Amazon to unblock 64-bit Firefox.

This article is now linked from Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work? article, which starts off as follows:


Beginning in version 52, Firefox no longer loads NPAPI plugins except Adobe Flash. Some plugins that are no longer supported include Silverlight, Java, and Adobe Acrobat.


Based on the above I made some edits to the Popular plugins section, to include replacing "Adobe Reader" with "Adobe Acrobat".

This article also includes a "Needs change" entry, [Fx52] update for Firefox 52 (bug 1269807).

The Template:pluginSupportEOL included in this article also has a Needs change entry, Update with {for fx52} and {for not fx52} content when Firefox 52 goes into beta ... but I have no idea if Template controls will be migrated to Lithium.