Which are add-ons, extensions, or plugins

There is a useless non-answer ("Add-ons are like apps") which goes on to ignore extensions and plug-ins.
What are the differences between add-ons, extensions, and plug-ins? Some use the terms interchangeably, but that is not right, since some usually show up under different window & menu lists. The Tools>Add-ons menu show all three, including Add-ons!?
Beginners or non-programmer users want to know!

Normally, when you try to install an extension from the Mozilla Add-ons site, you get a progress bar that drops down temporarily from the address bar, and then a pop-up dialog asking you to approve the installation. Do you get either of those or just nothing happens?
As an example: https://addons.mozilla.org/firefox/addon/adblock-plus/
Could you test with the avast! extension disabled in case it is blocking these normal actions? You can do that on the Add-ons page. Either:
* Ctrl+Shift+a
* "3-bar" menu button (or Tools menu) > Add-ons
In the left column, click Extensions. Then find avast! on the right side and click Disable.
Often a link will appear above a disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.
Any difference? Are other sites still a problem?

Similar Messages

How come absolutely none of my add ons/extensions are working even when i try to redownload them?

it has been approximately four months since my add ons/extensions haven't been working and i just cannot figure out why. one day i opened firefox and each one of my add ons started to not work anymore [there was no update i might ad so lack of compatibility is out of the question also since most of my add ons are compatible with at least version 3.6] i'm running on windows vista 64bit premium home edition. yeah. please help me because this is really annoying and i cannot download any youtube videos nor music from any other website. thanks in advance
-EDL1

'''elitedarklord_1337'''
Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox [[Profiles|profile folder]] to reset the extensions registry.
See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.
'''amal123'''
See your own thread: [/questions/747509]

When I go to Tools Add-ons, nothings shows under Add-ons, Extensions, etc.

The only clickable item there is "check for updates." My add-ons are all working, but none show up. Same for Extensions, Appearance, Plugins, Services.
I don't know how long it's been this way, because I've had no need to check until last Friday, when I picked up some malware that slides open a tab from the right-hand side of my screen with "Hot Deals" on it.
Firefox's "Automatically add" option tells me that listed below are my add-ons (though I can't see them in my own Add-ons tab). There are several there I don't recognize at all, but I have no idea how I can remove them without that page properly loading.
Using Firefox 25.0.1 with Windows 7
* Google Update
* Shockwave Flash 12.0 r0
* The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
* iTunes Detector Plug-in
* 5.1.30214.0
* Picasa plugin
* NPRuntime Script Plug-in Library for Java(TM) Deploy
* Shockwave Flash 11.9 r900
* GEPlugin
* RealPlayer(tm) LiveConnect-Enabled Plug-In
* RealPlayer Download Plugin
* RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
* RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
* RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
* RealDownloader Plugin
* Adobe PDF Plug-In For Firefox and Netscape "9.5.5"
* Nitro PDF plugin for Firefox and Chrome
* NVIDIA 3D Vision plugin for Mozilla browsers
* NVIDIA 3D Vision Streaming plugin for Mozilla browsers
* Amazon MP3 Downloader Plugin 1.0.17
* WildTangent Games App V2 Presence Detector
* Logitech Device Detection
* RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
* RealPlayer(tm) HTML5VideoShim Plug-In
* NPWLPG
* Windows Activation Technologies Plugin for Mozilla
Thanks for any help you can offer.

If it works in Safe Mode and in normal mode with all extensions (Firefox/Tools > Add-ons > Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.
Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit)
*If you have many extensions then first enable half of the extensions to test which half has the problem.
*Continue to divide the bad half that still has the issue until you find which one is causing it.

Nothing shows when going to Tools Add-ons Extensions to delete Yahoo Toolbar.

When going to check my extensions, nothing shows up. All i want to do is delete these crappy toolbars ie/yahoo, vuze.
Nothing seems to be disabled, no recent updates changed anything, but for some reason, I'm just thinking i will have to reinstall Firefox, enable my IE again, and re-download firefox.

Reinstalling Firefox most likely won't help if there is a problem with the current profile.
See:
*http://kb.mozillazine.org/Uninstalling_toolbars
*http://kb.mozillazine.org/Uninstalling_add-ons
Create a new profile as a test to check if your current profile is causing the problems.
See "Basic Troubleshooting: Make a new profile":
*https://support.mozilla.org/kb/Basic+Troubleshooting#w_8-make-a-new-profile
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.
If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.
See:
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Finding IE Add Ons & Extensions

Chrome is currently my preferred browser but I recently noticed that it takes a lot of my computer resources to run Chrome. I truly beleive in what Microsoft is trying to accomplish with their hardware (cell phones, tablets and X BOX). The main complaint
I hear about microsoft phones is the lack of apps. The same can be said about the microsoft browser. There are not very many add ons or extensions available to help customize the browsing experience. If their are add ons and extensions available I do not know
where to find them. Google and Apple both have centralized locations to find apps. Why not do the same for IE? Why not include a button in IE explorer that took me too a place where trusted add ons could be download and uploaded. (I emphasize TRUSTED because
I got a virus trying to install Ad Block)This idea could be used for all of the Microsoft Office programs.

Unfortunately your post is off topic here, in the TechNet Site Feedback forum, because it is not Feedback about the TechNet Website or Subscription. This is only one forum among the many
that are on the TechNet Discussion Forums, and given your post, you likely chose the wrong forum. This is a standard response I’ve written up in advance to help many people (thousands, really.) who post their question in this forum in error, but please
don’t ignore it. The links I share below I’ve collected to help you get right where you need to go with your issue.
For technical issues with Microsoft products that you would run into as an
end user of those products, one great source of info and help is
http://answers.microsoft.com, which has sections for Windows, Hotmail, Office, IE, and other products. Office related forums are also here:
http://office.microsoft.com/en-us/support/contact-us-FX103894077.aspx
For Technical issues with Microsoft products that you might have as an
IT professional (like technical installation issues, or other IT issues), you should head to the TechNet Discussion forums at
http://social.technet.microsoft.com/forums/en-us, and search for your product name.
For issues with products you might have as a Developer (like how to talk to APIs, what version of software do what, or other developer issues), you should head to the MSDN discussion forums at
http://social.msdn.microsoft.com/forums/en-us, and search for your product or issue.
If you’re asking a question particularly about one of the Microsoft Dynamics products, a great place to start is here:
http://community.dynamics.com/
If you really think your issue is related to the subscription or the TechNet Website, and I screwed up, I apologize! Please repost your question to the discussion forum and include much more
detail about your problem, that could include screenshots of the issue (do not include subscription information or product keys in your screenshots!), and/or links to the problem you’re seeing.
If you really had no idea where to post this question but you still posted it here, you still shouldn’t have because we have a forum just for you! It’s called the Where is the forum for…?
forum and it’s here: http://social.msdn.microsoft.com/forums/en-us/whatforum/
Moving to off topic.
Thanks
MSDN and TechNet Subscriptions Support
Did Microsoft call you out of the blue about your computer?
No, they didn't.

Ran the 'Refresh' mode, now nothing is compatible with my version of firefox? No Add-ons, Extensions or Themes. Please help me get back to what I had.

I opened Firefox, and I had a bar along the bottom saying it needed to be optimized, so I could refresh Firefox. I understood that it would take it back to its original state, but I thought that I could add things that I wanted. But when it was "Refreshed", I could not add anything. Themes are "Not compatible with my version of Firefox". Add-ons do download, but I cannot install them. It takes me to a page that is too confusing for a non-tech person like me (a windows page that wants me to find the program that will install it). So I gave up (I also don't have alot of time to fix this). I checked for "updates" hoping that I could update the version and then add a theme, add-ons, extensions, etc. But it is up-to-date. Thank you for your help.

Normally, when you try to install an extension from the Mozilla Add-ons site, you get a progress bar that drops down temporarily from the address bar, and then a pop-up dialog asking you to approve the installation. Do you get either of those or just nothing happens?
As an example: https://addons.mozilla.org/firefox/addon/adblock-plus/
Could you test with the avast! extension disabled in case it is blocking these normal actions? You can do that on the Add-ons page. Either:
* Ctrl+Shift+a
* "3-bar" menu button (or Tools menu) > Add-ons
In the left column, click Extensions. Then find avast! on the right side and click Disable.
Often a link will appear above a disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.
Any difference? Are other sites still a problem?

I have removed the old Java Updates (17/19/21) from my Program and Features list(Win7). They still appear in the Tools Add-ons Extensions list. How do I remove them?

I have removed the old Java Updates (17/19/21) from my Program and Features list(Win7). They still appear in the Tools>Add-ons>Extensions list. How do I remove them?
In both SAFE and Regular browser windows, the UNINSTALL button is grayed out.
I have tried in SAFE MODE, as well as the Help>troubleshooting Information>Application Basics>Profile Directory>Open Containing Folder,,,(looked, nothing there),,,,in both SAFE and Regular browser windows.

You can uninstall (remove) the Java Console extensions, you do not need them to run Java applets.
See http://kb.mozillazine.org/Java#Multiple_Java_Console_extensions
Your above posted system details show outdated plugin(s) with known security and stability risks that you should update.
*Shockwave Flash 10.1 r85
Update the [[Managing the Flash plugin|Flash]] plugin to the latest version.
*http://www.adobe.com/software/flash/about/

When I go to get add-ons (7.0.1), nothing shows up, except the "what are add-ons" info bubble. How do I make this work?.

When I go to get add-ons (7.0.1), nothing shows up, except the "what are add-ons" info bubble. How do I make this work?. The rest of the functions in that section seem to work. And I can search MY add-ons, but not Available Add-ons.

Click on Extensions on the left-side.

I want to reinstall my operating system,How can I back up all my add ons, extensions and personas for reinstallation when Im done?

I want to reinstall my operating system,How can I back up all my add ons, extensions and personas for reinstallation when Im done?
Im using fire ftp,downthem all,wot , antiporn pro,and various personas.
I dont want to renstall them all one at a time, rather I would like to ireinstall a back up like I do with my bookmarks,
Is this possible??

See this support article. <br />
https://support.mozilla.com/en-US/kb/Backing+up+your+information

Why can't I get the Norton Toolbar? In menu, add-ons,extensions, it says Norton toolbar is incompatible & disabled.

I can't get norton toolbar for firefox 36. Have run Norton live update repeatedly; it updated everything fine and applied a patch. When I go to firefox menu>add-ons>extensions, Norton toolbar is grayed out and says it is incompatible with with firefox 36, and is disabled. Help!! I need my Norton vault.

hi Cathie7372, [https://community.norton.com/en/blogs/product-update-announcements/firefox-36-support-norton-toolbar according to Norton] the latest version of the toolbar compatible with firefox 36 is 2014.7.10.26 - yours shows as 2014.7.10.'''16'''...
as norton distributes the updates themselves we probably aren't able to help much - please contact norton's support if you aren't receiving the latest update even after running liveupdate repeatedly. they should be able to help you getting their product up-to-date.

I updated Adobe flash and when I re-opened firefox all of my bookmarks, add-ons, extensions, history were gone. How do I retrieve?

When updated Adobe flash, I was asked to close the browser window. I complied and when I re-opened, firefox was different and all of my stuff was gone.

go to Tools Menu -> Add-ons -> Extensions section -> Disable and Remove the add-ons that look unwanted or suspicious -> Enable trustworthy add-ons -> Restart Firefox.

All (nearly) add-ons / extensions disappear after update to v15 then v16

This has happened to me twice now. After a FF update (first to v15?) all or most add-ons / extensions disappeared, didn't even appear in the menus. (At least I am sure my critical extensions (see below) were missing earlier. It has been awhile.) After trying the solutions posted in various topics I finally gave up and created a new profile. I installed my more critical add-ons, Firebug, Flash Firebug and Restartless restart. Everything was fine until the latest update to 16.0.1. Once again all add-ons disappear, including from the menus. Curiously "clear recent history" also seems to have been missing until I deleted the extension and compatibility files.
Going back to my previous profile, after deleting the extension and compatibility files and reloading FF I see that some add-ons now appear but not my critical ones.

@cor-el,
So... With FF closed I deleted localstore.rdf, compatibility.ini, extenstions.* and addons.* files. Start FF, the files rebuild. No extensions appear so no change.
As a test I created a new profile and added extensions and of course, everything worked fine. Then I got slightly smart and restored the entire profile (and just that profile) from a backed up version before the FF update. Everything works again!
Conclusion: Something in the FF update process corrupted something other than the files we discussed above causing (nearly?) all add-ons to not work. So far it appears that whatever the update changed in the profile was not needed as restoring an older profile version seems to work fine.

When "reset" used-are the EXTENSION add-ons saved-not plugins

Started Firefox and a pop up from Mozilla asked if I wanted to speed up starting time because it was slow opening. There was a suggestion to use reset. I already knew that feature was available but I didn't want to set it to "factory settings" when I have very many extension addons, the options are set like I want, and the program runs fine after it starts. I didn't see where "extension add-ons" were kept inside the profile. I want to know if all the EXTENSION ADD_ONS are saved anywhere, or will I have to find and reinstall all of them again??

Did you try the suggestions here?
*https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up
See this article about information about the Firefox profile folder:
*http://kb.mozillazine.org/Profile_folder_-_Firefox
When you reset Firefox then a new profile is created and some personal data (bookmarks, history, cookies, passwords, form data) is automatically imported and the current profile folder will be moved to the desktop to an "Old Firefox Data" folder.
Installed extensions and other customizations (toolbars, prefs) that you have made are lost and need to be redone.
It is possible to recover data from the old profile, but be cautious to avoid carrying over problems.
*https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

All add-ons / extensions are missing as if not installed. (ff4.0.1)

I'm currently using Firefox 4(.o.1). when i checked the add-ons manager, in the "extensions" tab, there are no extensions and it says here "you don't have any add-ons of this type installed". i've restarted the browser a few times and my laptop once, and no changes at all except for one lucky time when it seems normal. i don't know whether it is there but no one can see it or what. i've been using adblock plus and so far, i see no ads/popups.

Just try to install (any) new add-ons and restart firefox.

Downloads, add-ons,extensions, and the like are not visible. Help?

I cannot view any of my downloads, extensions, add-ons, themes, etc. I know they are there. My downloads complete, but I never see them. I can't install any new add-ons or anything because I can't select them when the window pops up, its just blank.

Your above posted More system details list show that a conduit toolbar has modified the keyword.URL pref:
keyword.URL : http://search.conduit.com/ResultsExt.aspx?ctid=CT1584344&q=
You may want to look into that.<br />
* http://kb.mozillazine.org/Location_Bar_search
* http://kb.mozillazine.org/Keyword%2eURL

Which are add-ons, extensions, or plugins

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