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How to Disable Firefox Missing Plugin Notifications

Firefox - How to disable missing plugin notifications

Sometimes when you visit a website you’ll see an “Additional plugins are required to display…” notification at the top of Firefox.  Usually it is because you legitimately don’t have the correct plugin to view content on the website (such as Flash player) but other times it may be because the website wants you to install something malicious.  If you’ve chosen not to install Flash or other plugins, you’ll see the “missing plugin” notification all of the time.  So, lets fix that and get rid of the notification.

Step 1

Type about:config into the Firefox address bar.

On the humorous “void your warranty” page, Click I’ll be careful, I promise!.

Disable Firefox 4 missing plugin warranty

Step 2

In the filter box, Type missing_plugin.

Now in the preference list below, Right-Click plugins.hide_infobar_for_missing_plugin and Select Toggle.

missing_plugin preference name in firefox 4


Now when you visit a website with a plugin you don’t have installed, Firefox will no longer prompt you with the annoying “missing plugin” bar at the top of it.  On my computer setup I don’t have Flash installed, so this fix comes in handy when viewing websites that have flash-based advertisements and pop-outs.

Firefox 4 missing plugin notification has been removed

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9 Responses to How to Disable Firefox Missing Plugin Notifications

  1. Ziggy April 22, 2011 at 11:50 pm #

    Thanks. Sounds good. But is there also a way of doing this for “incompatible extensions” in Firefox 4?

  2. groovinJackman April 23, 2011 at 2:12 pm #

    Great tip – I guess I’d also recommend doing this on a parent’s computer, to prevent them from downloading viruses.

  3. Tripp June 22, 2011 at 6:24 pm #

    Thank you for posting this info. I uninstalled Flash from my Mac tonight and couldn’t figure out how to turn off the missing plugin notification in Firefox. Cheers.

  4. James August 16, 2011 at 6:56 pm #

    I didn’t quite understand this when I first feature it. Merely when I went through it a second time, it all became clear. Thanks for the brainstorm. Absolutely thing to remember just about.

  5. sufwan December 25, 2011 at 2:39 am #

    thanks Dear indispensable way good

  6. wotWok October 15, 2012 at 6:21 am #

    Thank you so much!!

  7. anonymous February 22, 2013 at 6:50 am #


  8. paul August 17, 2013 at 5:48 pm #

    Knowing that when you visit a site and in a flash (no pun) they know what is or is not in your machine is very disturbing. Thank you for valuable details.

  9. d4t4 August 30, 2013 at 5:40 am #

    Thx! :-*

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