
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!.

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.

Done!
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.


Thanks. Sounds good. But is there also a way of doing this for “incompatible extensions” in Firefox 4?
Great tip – I guess I’d also recommend doing this on a parent’s computer, to prevent them from downloading viruses.
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.
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.
thanks Dear indispensable way good
Thank you so much!!
Thanks.