Add-ons ask to install every, when I switch ON my system

I'm using Firefox latest version and I have installed some add-ons.
when I switch On my system for the first time and open my browser it again ask me to install that add-ons (it did not happen when I hibernate or put my system in sleep).

You can check for problems with preferences and try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default values.
*http://kb.mozillazine.org/Preferences_not_saved
*http://kb.mozillazine.org/Resetting_preferences
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 check if there is a compatibility update available.
If this hasn't helped then also try to delete the addons.sqlite file.

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Why Add-ons constantly trying install every restart?

Hi, Im really mad these add-ons features. When I open computer creative cloud app forcing install add-ons. I deleted all add-ons from Extensions Manager CC but when I restart computer all add-ons start install again. This is unbelievable annoying. Some add-ons I used 5 years ago Creative Cloud forcing them install. I don't want it. How to stop this buggy Add-Ons feature... I hate it so much...

You can find all add-ons you have acquired at https://creative.adobe.com/addons/my_addons. You can remove the add-ons you doesn't need at there.

When looking for WeatherFox, I discovered my entire lower bar had disappeared. I cannot figure out how to restore it. The add-ons are still installed.

I just noticed this morning that the lower tool bar, including weatherfox, Hebrew Calendar, and several other add-ons, has completely disappeared. Perhaps it's a matter of having inadvertently clicked on something one day when not paying attention. When I checked under Firefox preferences a little while ago, I went to <manage add-ons> and saw all installed add-ons were still installed. I cannot find a way to restore the lower tool bar displaying them.
After doing a back-up, I opened Time Machine to see whether an earlier Firefox homepage included the lower bar. I don't know whether I did not go back far enough or whether Firefox is somehow opening to a new, unintended default without that lower bar, no matter how far back I go.
Meanwhile, in the process of writing this, I returned to Firefox Preferences and now the general preferences dialogue box is completely screwed up, as though the size of the contents of that dialogue box had grown, in both dimensions, so it no longer fits within the box and parts of it cannot be accessed. It is truncated, in other words, both at the right side and along the bottom. I can no longer even access the add-ons section. The last thing visible at the bottom of that box is the very top part of the line of text that appears to read: "Choose preferences for your add-ons." It's as though someone had come along with an Exacto and sheared away the bottom part of that line of text. And then there's the <?> at the lower left corner. Along the right side of the box, under "Home Page," there are three buttons: <Use Current Pages>, <Use Bookmark>, and <Restore to Defau>, which is the point at which the text ends.
What the heck is going on? Now it's not only a matter of restoring the lower bar on my Firefox page, with add-ons displayed, but apparently I need to figure out how to resize the general preferences dialogue box, as well. I just checked: The other preferences dialogue boxes appear to fit correctly.
I use a Mac PowerBook G4 with Firefox version 3.6.13.

See View > [X] Status Bar

I am unable to update any add-ons at all. Every time I try and install an add-on or even the new "show hidden add-ons" add-on, I get a server error. How do I fix this?

I am unable to update any add-ons at all. Every time I try and install an add-on or even the new "show hidden add-ons" add-on, I get a server error. How do I fix this?

You may have triggered some intermittent database issues but it should be running smooth by now. Let us know if you still see server errors.
Also, if your addons appear to go missing after updating there is a workaround http://blog.mozilla.com/addons/2011/09/28/issue-discovered-with-firefox-add-on-upgrades/ And there is a 7.0.1 fix on its way.

Missing add-ons, hard to install them again.

One day firefox simply "forgot" the add-ons it had installed (Adblock, session manager, google translate)
And when I try to download them back from the mozilla website, nothing happens. Although if I open the installation link in another tab, it works.
Any ideas on what's happening?

hello yogubert, are you using avast as security software by any chance? (if so you might to consider switching to other less intrusive programs): http://www.ghacks.net/2014/11/16/latest-avast-reportedly-deleting-firefox-add-ons/

How to lockdown and prevent add-ons from being installed?

Hi. I'd like to lockdown an installation of Firefox on a Win XP computer, to prevent add-ons from being installed by limited account users. How do I accomplish this please?

Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify default values.
Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.
pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift
See:
* http://kb.mozillazine.org/Locking_preferences
You can use these functions in mozilla.cfg:
defaultPref(); // set new default value
pref(); // set pref, but allow changes in current session
lockPref(); // lock pref, disallow changes
lockPref("xpinstall.enabled", false);

I recently had to disable and enable all add-ons on Firefox. Now when I google something, when I hover over the website preview and click 'cached' it won't highlight the key terms anymore. How can I fix this?

I recently had to disable and enable all add-ons on Firefox. Now when I google something, when I hover over the website preview and click 'cached' it won't highlight the key terms anymore. How can I fix this?

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Is there a way to block add-ons from being installed in Firefox, even add-ons coming from 3rd party sites?

I work in a small call center and I have been working on trying to convince IT and management to use Firefox on the computers on the call floor. The main issue I have been having in convincing them, is that you can't block add-ons and things like that as easily as in IE. I thought I had it with blocking addons.mozilla.org, which wouldn't allow access to Mozilla's add-on site. However, with that, techs would still be able to go to 3rd party sites, generally the creators of the add-ons, and download them there. Anybody have any ideas on how to stop this?

You can configure Firefox settings to notify you before installing an add-on.
-> click Firefox '''button''' and click '''Options''' (or Tools Menu -> Options)
* '''Security''' panel -> place Checkmark on '''Warn me when websites try to install add-ons''' -> click '''Exceptions''' button -> click '''Remove All Sites''' button and click '''OK'''
* click OK on Options window
Check and tell if its working.

Add-ons window does not appear when selected from Tools/Addons unless new tab opened first

Addons window does not open when Tools/Addons selected, unless New Tab (blank) selected first. Is there a fix, or is this a bug
== This happened ==
Every time Firefox opened
== upgraded to 3.0

This is an issue with one of your add-ons, Mr Tech Toolkit, it is a known problem but I know of no fix, though there are some workarounds.
In the Mr Tech Toolkit options, on the "Manager Hacks > Behaviour" section, you will have "Select Window Target" set to "New Tab". A workaround is to change it to "New Window"
Another workaround is to use a bookmark to open the add-ons manager in a tab. Create a bookmark with the following location:
chrome://mozapps/content/extensions/extensions.xul

Add-ons won't install

When I click to download the Add-on Compatibility Reporter if I look in about:addons it says it is installing but this never completes. If I click to cancel it the cross doesn't respond. After restarting Firefox the addon doesn't show up in the list any more. I have tried deleting the extensions and compatibility files from the profile folder but the issue still occurs.

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 on the next start 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.

Can't see add-ons or extentions, installed or available

When I click on Tools--addons or extentions---nothing comes up to see-------when I click on addons, there is a swirling circle that keeps on swirling, page never seems to load, and on extentions---it's a blank page......
I have the Amazon Wish List, Read later, social fixer and couple of others----shouldn't they be showing somewhere are having been installed?? I thought they used to show up??
Plug-ins show up as listed, and under appearance I have a few listed from when I was trying them out in version 19.0.1, but the problem has come about with the new version 20.0.1-----
I can't see any of my add-ons, extentions----but they are in my toolbar for me to use as usual????
I would like to install another add-on but page won't load----please help??

please try to delete the four files named "extension" (i've marked them red in the screenshot) while all firefox windows are closed.

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I can find all of my add-ons when I click on the Firefox icon on the upper left of my screen and click on add-ons, but they no longer appear on my toolbar where I can click on them and use them with the file I'm working in. They are useless to me now. I disabled the AOL toolbar for one session and the add-ons didn't show up. When I click on the edit buttion on the AOL toolbar, I don't see where I can add the Firefox add-ons. How can I get them back onto my toolbar?

Hi,
You can try to right-click the + after the last tab > [https://support.mozilla.org/en-US/kb/how-do-i-customize-toolbars Customize], and drag and drop the required icons. Alternatively you may also be able to include the icons via the '''Options''' in '''Tools''' ('''Alt''' + '''T''') > '''Add-ons''' > '''Extensions'''.
[https://support.mozilla.org/en-US/kb/Customizing%20Firefox%20with%20add-ons Add-ons]
[https://support.mozilla.org/en-US/kb/Using%20extensions%20with%20Firefox Using extensions]
If there are problems, you can try deleting the [http://kb.mozillazine.org/Localstore.rdf localstore.rdf] file in the [http://kb.mozillazine.org/Profile_folder Firefox Profile Folder] after exiting Firefox, and then do the customization.
To open the profile folder via Firefox: '''Help''' ('''Alt''' + '''H''') > '''Troubleshooting Information''' > '''Show Folder'''.
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]

The add-ons window does not appear when I go to Tool Add-ons.

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Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

I cannot shut off checking my add-ons or welcome dialogue every time I bring up FF 4. How can I shut this nonsense off???

I cannot think of a way to be more specific..................Every time I bring up FF 4, I get the dialogue that FF is checking my add-ons for compatibility and then brings up the "step 1 and step 2" get acquainted bit. As a long time FF use, I do not need this every stinking time I bring up the browse.

just do reset, press home button and power butoon for a while untill you can see apple
gud luck

Can't get Adobe L-R add-ons (presets) to install properly.

I bought two add-on apps from adobe (presets for Adobe Lightroom) and I can see them in my activity stream for Creative Cloud, but when I click on the names of the programs, I get an error msg. that says, "The product you requested cannot be found. Either this product does not exist or this account does not have access."

Which presets/add-ons?
And where - exactly - did you download them from?

Add-ons ask to install every, when I switch ON my system

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