I got some extensions before i update, after i update, the extension is still on but i cant find the extensions in the add-ons manager

some of my extensions is flagfox, greasemonkey, easy youtube downloader and some other which i cannot remember

It is possible that there is a problem with the file(s) that store the extensions registry.
Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry.
*https://support.mozilla.org/kb/Profiles
New files will be created when required.
See "Corrupt extension files":
*http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
*https://support.mozilla.org/kb/Unable+to+install+add-ons
If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to do a compatibility check or see if there is a compatibility update available.

Similar Messages

After automaticly updated to the version 7 the extensions page in the Add-ons Manager went blank and give this sentence "you don't have any add-ons of this type installed" but all the add-ons still working in the program

All the add-ons I had installed for the version 3+++ still working at the version 7, but the problem is that the extensions page in the add-ons manager is blank except a sentence that says "You don't have any add-ons of this type installed"

https://support.mozilla.com/en-US/questions/826729 has a solution for the problem

After updating Firefox to 5.0.1 the add-ons Manager did not show any of my add-ons, although they were all running.

After updating Firefox to 5.0.1 the add-ons Manager did not show any of my add-ons, although they were all running. Several restarts of Firefox, even with the add-ons disabled did not bring them back. I then installed another add-on and after restarting, all of the previous add-ons are now shown in the manager.
Running on Mac 10.5.8. Add-ons installed:
Adblock Plus, Add-on Compatibility reporter, Ant Video Downloader, Forecastfox, Google toolbar, Reload Every, Session Manager, and Steep and Cheap Watcher.
Note: the troubleshooting information was taken after the problem was fixed. Prior to fixing the issue, there were no items under the Extensions heading. Add-on Compatibility Reporter was the add-on that was added to restore all of the other add-ons, even though it was already installed.

'''Good to know you solved your own problem by simply installing another extension''', I like solutions that aren't going to cause extra work, or loss of data.
Here is what people normally have to do for missing extensions, as if not installed.-- <br>https://support.mozilla.com/questions/826729
:http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_%28Firefox%29
FWIW, renaming or deleting extensions.sqlite and the other files beginning with "extensions." causes the files to be rebuilt from the extensions directory, so nothing is lost, but they will be restored in alphabetical order.
I've solved places.sqlite problems by simply restoring a bookmarks backup, or creating a bookmarks backup and restoring that rather than face loss of history.
Please mark as solved so others will see your answer when looking for solved problems as solutions to there own or other people's problems.

The Add-Ons Manager is supposed to auto update your add-ons but it is not detecting the latest version of Adobe flash player. Why is it not detecting the update?

I have Adobe flash player version 10.2.152.32 installed and Adobe has released version 10.2.3.1 so why is the add-ons manager not detecting that an update is available?

Adobe Flash is not an add-on, it's a plug-in and you have to use the Plug-in Check to check for updates:
https://www.mozilla.com/en-US/plugincheck/

How to hide (not disable) one or multiple extension(s) in Add-ons Manager?

I have installed Play Music 1.6 on my computer. However, this extension shows up in the Add-ons Manager of my computer. I don't want anyone to be able to see the description nor disable this extension. My nephews use my computer frequently and I want to make sure they are not going to inappropriate websites.

Note that you still see the extension on the "Help > Troubleshooting Information" page and that starting in Safe mode will disable it like all other extensions (i.e. starting with Shift pressed is sufficient).
*https://support.mozilla.org/kb/Using+the+Troubleshooting+Information+page

I need to reinstall the RoboForm extension but it does not show up in the Add-ons Manager.

I refreshed FF due to slowness and lost all my extensions. I need the RoboForm toolbar but it doesn't show up. What should I do?

I went to my profile and deleted 2 of the files that were listed. I had closed FF before doing this then restarted FF. My RoboForm toolbar still does not show up. Can I get from you 'old' profile? If yes, how would I do that? Thanks!

When I update to the latest version I cannot access the add-ons page or request help because neither page will load. My Weather channel add-on was NOT piced up when updating to the latest version. Why problems with improved latest version?

I have twice downloaded the latest version in the last month. Each time I encountered the same problems. the Weather Channel add-on I have did NOT appear in the latest version. When I tried to access the Add-Ons page under the Tools header it would not load. When I tried to contact Mozilla from the Help header it would not load
When I open a web page from Bookmarks it is painfully slow to load.
This is NOT an improved version. I have been using Firefox for years without problems; I prefer it to Internet Explorer. However the latest 'improved' version may change my mind.

The problem is that the Add-ons Manager tab when opened the first time, is on "Get Add-ons" section and that must be downloaded from the Add-ons server which might be overburdened.
* If you need to look for new Add-ons, go directly to the Add-ons site -> https://addons.mozilla.org/en-US/firefox/
Perform the suggestions mentioned in the following articles:
* [https://support.mozilla.com/en-US/kb/Template:clearCookiesCache/ Clear Cookies & Cache]
* [[Add-ons are disabled after updating Firefox#w_check-for-new-versions-of-your-add-ons|Check for New versions of your Add-ons]]
Check and tell if its working.
Not related to your problem but some of your Plugins are out-dated
* Update All your Firefox Plugins -> [https://www.mozilla.org/en-US/plugincheck/]
* '''When Downloading Plugins Update setup files, Remove Checkmark from Downloading other Optional Softwares with your Plugins (e.g. Toolbars, McAfee, Google Chrome, etc.)'''

Why can't I access extensions thru Add-ons Manager?

I just upgraded to version 8 on WinXP. Flagfox extension died on start up, so I tried to uninstall and re-install as suggested. However, Add-ons Manager says I have no Extensions, but Tools Menu lets me access and configure a number of extensions.

Well, after restarting Firefox enough times, everything seems to have gone back to normal. I even have extensions listed in the Add-ons Manager. I guess I have a successful upgrade to version 8, but it wasn't a pleasant experience.

Updating Flash Player Does Not Reflect In Add-Ons Manager or Plug-In Check

The add-ons Manager shows I have Flashplayer version 11.3.300.265. The Plug-ins Check shows there is an update, and I downloaded and installed Flash Player version 11.3.300.268. Six times! Each time, the installation shows as successful on the Adobe site, but FF14 does not reflect the new version, and the Plug-in check continues to insist that the version is out of date.
I had no problems whatsoever updating to the latest Flashplayer version in IE (8). But FF is once again giving me trouble with this.
In addition, the add-ons manager shows a version of Flash 9.0.45.0, last updated Feb 20, 2007. There's a big red warning that it's out of date. This is in addition to Shockwave Flash (the correct one) and Shockwave for Director (which is current). It's been like this for awhile, and I disabled the antique version of Flash and it does not affect FF or Flashplayer performance.
I tried deleting my plug-ins database, but I just get all the same info when it is rebuilt. Any suggestions or solutions would be appreciated.

Such old version are usually located in the plugins folder in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
You can enable the plugin and verify the path on the about:plugins page.
You can set the plugin.expose_full_path pref to true on the about:config page to see the full path of plugins on the about:plugins page.
*http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins
*http://kb.mozillazine.org/about:plugins
*http://kb.mozillazine.org/about:config
It is best not to leave that pref set to true as it exposes that full path to web servers, so reset that pref to false after you are done with the about:plugins page.
See "Manually uninstalling a plugin":
*https://support.mozilla.org/kb/Troubleshooting+plugins

Add-ons manager not loading since I updated Firefox yesterday,right?

I updated Firefox yesterday when the update was offered. Now the add-ons manager (accessed from the tools menu) hangs. It says loading and the icon spins, but it never completes the load. I am running on a Mac. Thanks.

This fix is not working for me. It just spins and spins and I cannot see my Add-ons list. It is difficult to imagine why clicking 'Get Add-ons', which sets off a process requiring interaction with a remote database, should cure a problem with the Extensions list, which presumably sits locally.

How can I find a list of installed add-ons in FF5? (the one I'm looking for is installed, but does not appear in Extensions, Appearance, or Plugins)

I installed an add-on that would allow me to change the content of the context menu. It works like a charm and I want to make a donation to the person who developed it, but I can't remember its name and I don't know how to find a list of the add-ons that I have installed. I've checked the lists that appear when you go to the Add-ons Manager under Extensions, Appearance, and Plugins, but it isn't there. Any help would be very much appreciated.

You're welcome. Could you mark the problem as solved, that along with the comment you already made helps other users with similar problems find aspects of Firefox and try things out for themselves, Thanks.

Extensions will not show in add-ons manager; Firefox start-up Java error

When I click Tools --> Add-ons, the Add-ons Manager opens but no Extensions show in the Extensions tab.
I think the problem is related to a start-up error message I receive. Every time I open Firefox, an error message labeled "[JavaScript Application]" opens and displays the following:
aObj is undefined -- chooseValue((void 0),"name")@resource:///modules/XPIProvider.jsm:7032
()@resource:///modules/XPIProvider.jsm:7142
([object Object])@resource://yoono/yoonoLog.js:95
([object Object])@resource://yoono/yoonoLog.js:49
()@chrome://yoono/content/yoonoOverlay.js:176
()@chrome://yoono/content/yoonoOverlay.js:88
([object Array])@resource://yoono/yoonoService.js:949
safeCall((function (aAddonList) {try {for (var i = 0; i < aAddonList.length; i++) {_self.addOns[aAddonList[i].id] = aAddonList[i];if (YOONO_ID == aAddonList[i].id) {_self.setExtensionVersion(aAddonList[i].version);}}} catch (e) {CONSOLESERVICE.logStringMessage(e);}aCallBack();}),[object Array])@resource://gre/modules/AddonManager.jsm:50
([object Object])@resource://gre/modules/AddonManager.jsm:964
AOC_callNext()@resource://gre/modules/AddonManager.jsm:120
([object Array])@resource://gre/modules/AddonManager.jsm:959
PL_getAddonsByTypes(null,(function (aProviderAddons) {"use strict";addons = addons.concat(aProviderAddons);aCaller.callNext();}))@resource:///modules/PluginProvider.jsm:110
callProvider([object Object],"getAddonsByTypes",null,null,(function (aProviderAddons) {"use strict";addons = addons.concat(aProviderAddons);aCaller.callNext();}))@resource://gre/modules/AddonManager.jsm:78
([object Object],[object Object])@resource://gre/modules/AddonManager.jsm:957
AOC_callNext()@resource://gre/modules/AddonManager.jsm:126
([object Array])@resource://gre/modules/AddonManager.jsm:959
([object Array])@resource:///modules/XPIProvider.jsm:3094
completeAddon([object Object])@resource:///modules/XPIProvider.jsm:3895
getAddon([object Object])@resource://gre/modules/AddonRepository.jsm:504
("[email protected]",completeAddon)@resource://gre/modules/AddonRepository.jsm:536
([object Object])@resource:///modules/XPIProvider.jsm:3899
((function (aAddon) {"use strict";
function completeAddon(aRepositoryAddon) {aAddon._repositoryAddon = aRepositoryAddon;self.addons.push(aAddon);if (self.complete && self.addons.length == self.count) {self.callback(self.addons);}}
if ("getCachedAddonByID" in AddonRepository) {AddonRepository.getCachedAddonByID(aAddon.id, completeAddon);} else {completeAddon(null);}}),0,[object Array])@resource:///modules/XPIProvider.jsm:4796
(0)@resource:///modules/XPIProvider.jsm:4795
Any and all help would be much appreciated.
-Jason

The error means that an add-on called yoono is having problems communicating with a component made by Microsoft. I spoke to somebody with experience in working with the firefox coding, and he said that they're likely to be different issued and to see if yoono or another extension is causing the problems by opening firefox in safe mode. To open firefox in safe mode, [[Safe Mode|click here]]. If you can get to the addon manager there, I recommend you get rid of yoono

After loading a toolbar and finding it to be not what I thought, I attempt to go to Tools Add-ons so as to "uninstall" it, but get a tab labeled "Add-ons Manager" that says "Loading..." forever -- what's up with that?

Firefox 6.0.2. Loaded something called "Productivity 3.1 Community Toolbar", version 3.7.0.6, "Toolbar powered by Conduit". Simply want to go to the Add-ons Manager and get rid of it, but don't seem to be able to reach the Add-ons Manager. Is there some other way to rid myself of this toolbar?

No one here is going to do anything about it. Send feedback to Apple.
http://www.apple.com/feedback/ipad.html
Basic troubleshooting steps.
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 

Add-ons Manager Says Java Needs Update, But Latest Version Already Installed

I have Java version SE7 U51 10.51.2.13 installed and working fine. Today I "upgraded" to FF 28.0. Now the Add-Ons Manager says Java is out-of-date, but when I go to the Java website, this is the very latest version available. I downloaded both the 32- and 64-bit versions anyway (though I had already installed them a month ago) and re-installed both. The FF Add-Ons Manager still has same warning: "Vulnerable- Update Now!" The Java Test page says I have the latest version, and it works.
So what the heck to do?

Never mind- found the answer. It's the same old silly runaround between Firefox and Oracle. The Firefox link send you to the wrong Java version (outdated) and you have to find the correct Oracle webpage that now has Java version 8 (actually v.1.8.0 plug in 11.0.2.132) and download and install THAT. It would be nice if this were simpler...

I updated Firefox and the extensions and keep getting "restart firefox for changes to take effect." Even after restarting, none of the add-ons actually update and do not appear, for instance, noscript. Please help!

There are a bunch of add-ons that recently were updated, including noscript, adblock, etc. These add-ons were updated successfully and say in the add-on window they will be installed the next time Firefox restarts. There's also a bar that says "restart firefox now" and even when clicking restart firefox, none of the updates seem to load. I had to manually download the noscript the last time to get it to work but alas with the latest update, again, same problems. i tried disabling other plugins with no impact either. Anyone else having a similar problem and does anyone know how to get this resolved?

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox [[Profiles|profile folder]] to reset the extensions registry. New files will be created when required.
See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the "Find Updates" button (in Firefox 4: right-click the extension -> "Find Updates") to do a compatibility check.

I got some extensions before i update, after i update, the extension is still on but i cant find the extensions in the add-ons manager

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