"Firefox must be restarted to install add-ons", but restarting does nothing

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• Firefox 4 is unable to install add-ons. After download the 'installation' bar stuck in the beginning and never ends.

  Firefox 4 is unable to install add-ons. After download the 'installation' bar stuck in the beginning and never ends.
  After that I updated to 3.6, FF4 to see any of my previous modules.
  When you try to install the new, I see no error dialog box or message, just install bar is not going anywhere.

  To anyone out there yet with this issue.
  The solution that worked for me was to create a new user profile.
  Give it a try, if it works you can just move your settings and other things more.
  Oli

• Today, I have a windows 7 just put in place and has not transferred the data of Fire Fox. I downloaded firefox again and installed add ons but I only have a splash screen

  I just want a toolbar firefox with all the history of tabs, delete, menu, etc: what I have is a page getting started with the search bar.

  See also:

  • https://support.Mozilla.org/KB/common-questions-after-updating-to-new-Firefox
  • https://support.Mozilla.org/KB/learn-more-about-the-design-of-new-Firefox
  • https://support.Mozilla.org/KB/how-to-make-new-Firefox-look-like-old-Firefox
  • https://support.Mozilla.org/KB/what-happened-to-the-add-on-bar

• Firefox ask me to install add ons evertime the opening... I disabled all of the updates.

  now I use the latest version of Firefox (10.0). AprΦs the dΘmarrage, I open the Firefox browser. He always asks me to install the Add-ons that is already, I added to the browser.

  Ex:

  I installed the firebug add-on. When I open a browser he asks me to install firebug again. After installing the browser must be restarted to activate firebug

     So please reply me for this problem
  

  My guess:
  
  You get a prompt to confirm what modules you have installed. There used to be a problem with other programs to install add-ons without your permission, and so many people knew they had these add-ons installed. Sometimes, these modules caused Firefox slow or unstable. However, there are some cases where people are aware of these modules being installed by third parties and they really want.

  So in a Firefox update has a few months ago, a single confirmation prompt was added to ensure that you are aware of all add-ons that are already installed and allow you to select those that you want to keep.

  Here is a blog about the feature: http://blog.mozilla.com/addons/2011/08/11/strengthening-user-control-of-add-ons/

  What do you see?

• I have installed Firefox 12 and went to install add-onns, I added 6 may add ons, none of them appear under 'Add-ons '.

  I installed Firefox 12, I then added 6 modules, when I check on them, I go to 'tools'-'Add-ons' and nothing found. Some appear under 'tools' (like tweaktube and delicious) but none appear in the list of modules.

  It is possible that there is a problem with the files that store the registry extensions.

  Delete the files (extensions.sqlite, extensions.ini, extensions.cache) extensions.* and compatibility.ini in the profile folder of Firefox to reset the extensions registry.

  • https://support.Mozilla.org/KB/profiles

  New files will be created if necessary.

  See "extension corrupted 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 extensions, is not compatible, in "tools > Modules > Extensions ' and then click the Tools button, on the left side of the search bar (or click on the"Find updates"button in older versions of Firefox) to check if there is an available update compatibility.

• Am not able to install add-ons in Firefox 11 as well as the fixes suggested here doesn't seem to work. Any suggestions?

  Installed Firefox without add-on to display and 11. Tried to install Autofill Forms and I get the message "there was an error to install AutoFill Forms. Try Again"even for any other add-on. In addition, running Norton 360V6 and can't even see Norton Toolbar. Have uninstalled and reinstalled Firefox and 360 (the latter using Norton Removal Tool). Do not have this problem with Internet Explorer or Firefox 11 on my other computers. Just this one. An earlier version of Firefox plugins appears, but not no matter what Add-ons.

  It is possible that there is a problem with the files that store the registry extensions.

  Delete the files (extensions.sqlite, extensions.ini, extensions.cache) extensions.* and compatibility.ini in the profile folder of Firefox to reset the extensions registry.

  • https://support.Mozilla.org/KB/profiles

  New files will be created if necessary.

  See "extension corrupted 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 extensions, is not compatible, in "tools > Modules > Extensions ' and then click the Tools button, on the left side of the search bar (or click on the"Find updates"button in older versions of Firefox) to do a check of compatibility or to see if there is an available update compatibility.

• Cannot install add-ons in Firefox 4 "[Add on] could not be installed because Firefox failed to modify the necessary.".

  I tried to install add-ons for Firefox 4, but were unsuccessful.

  If I try to install inside the about: addons, the add-on will download, but then the installation bar will not change.
  If I try to install from addons.mozilla.org, the add-on download but then I get a message in the info box on site (at the side of the address bar) which reads, "[module] could not be installed because Firefox failed to modify the necessary."

  If I try to install any other modules after that, I get an error.

  I'm under Ubuntu 10.10 on a Toshiba Satellite U400.

  On config variables xpi: enabled = true.

  I'm having this problem. I am also under Ubuntu 10.10 and Firefox 4.0 (Canonical version 1.0) 32-bit.
  When I try to install the Greasemonkey addon (and other addons), it downloads, but the installation progress bar remains at 0%. I can not also cancel installation. If I try, I get the error:

  Error: Cannot cancel install of https://addons.mozilla.org/firefox/downloads/latest/748/addon-748-latest.xpi?src=addondetail of that State (5)
  Source file: resource://gre/modules/XPIProvider.jsm
  Line: 5168

  When you try to install, I get this error in the error console:

  Error: this.installLocation is not defined
  Source file: resource://gre/modules/XPIProvider.jsm
  Line: 5751

  I read on the troubleshooting page of Firefox that xpinstall.enabled should be set to true in the configuration: about, but there is not in my list of config, so I tried to add it, but it made no difference.

• Firefox update won't complete audit Add ons.

  When I started Firefox this AM "verification of compatibility of Add-ons" box goes up, but it will not be finished. By clicking on the Cancel button does nothing no more. I tried to uninstall Firefox, restart and install without success.

  It is possible that there is a problem with the files that store the registry extensions.

  Delete the files (extensions.json, extensions.sqlite, extensions.ini) extensions.* and compatibility.ini in the profile folder of Firefox to reset the extensions registry.

  • https://support.Mozilla.org/KB/profiles

  New files will be created if necessary.

  See "extension corrupted 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 extensions or is not compatible in ' Firefox/tools > Modules > Extensions ' and then click the Tools button at the left end of the search bar to check if there is an update available compatibility.

  If this did not help, then also remove the file addons.json and addons.sqlite.

  You can also check for problems with preferences and remove a user.js file as possible and numbered prefs-# .js files and rename (or delete) the file prefs.js to reset all the prefs on the default valeur.*http://kb.mozillazine.org/Preferences_not_saved

• Unable to install add-ons

  When you try to install a new Add On I get message "You need Firefox to install add-ons." and add to the occult Firefox button. Frustrating, because it is already installed of course to access the page in the first place!

  You can enter Subject: config in the address bar, locate all preferences starting from general.useragent and ensure that they are in their default state (otherwise, a reset button will appear when you select them)?

• Cannot install add-ons

  I can't install add-ons. When I click on 'Install now' I get a message that reads "Stumbleupon could not be installed because Firefox is unable to modify the file necessary.".

  I can not install additional modules.

  12 Firefox is not the reset button.

  You will need to upgrade to Firefox 13 if you want to use that button instead of the Terminal method to create a new profile to reset.

• Firefox 3.6.10 broke all add-ons

  I installed the 3.6.10 patch, all modules are disabled, 1password, adblock, web development tools.

  You can force Firefox to rebuild the list of extensions installed by deleting a few files. If one of these files is damaged, it can cause problems with Add-ons does not. For more details see the files extension corrupted article Impossible to install add-ons section.

• I do not install add-ons

  Please help me!

  I buy the add-in, but I can not install them.

  Files do not appear on the Isloud shop

  With Extension manager CC cannot install add-ons on Lightroom

  Help, please

  Dear Alexander

  Please tell us the name of the product you are trying to install Lightroom. Most Lightroom products install in the folder downloads to your computer. Please search for a ZIP file in the folder downloads to your computer.

  Have you checked the section "where to Find It' page of the product on the site of Adobe modules? This should give full instructions on installing your new product in Lightroom. If it's not, and you still have problems, please let us know.

  Kind regards

  Krystal

  -Adobe Exchange / modules team

• I am trying to install Windows 7, but he does not see the disk partitions and the installation goes to the screen "select the driver to install."

  Device drivers for a Win 7 install on Ubuntu system

  Hello

  I bought a Toshiba Portege M400-S5032 tablet PC reburbished that came with Ubuntu installed.  I am trying to install Windows 7, but he does not see the disk partitions and the installation goes to the screen 'Select the driver to install' with no option. Because it is not find Windows device drivers, I went to the Toshiba site to see if I could download a full game, but I can not...  So, how do you get drivers for Windows can install (or y at - it another way to work around it)?

  Thank you!

  The bios on fail safe defaults options are?

  It will probably take the raid driver

• Windows wars Napoleon Cossacks 8. I install the game install the patch but it does not start, just flashing screen and that's it. has tried everything what is possible. D what can I do to read. ?

  I install the game install the patch but it does not start, just flashing screen and that's it. has tried everything what is possible. D what can I do to read. ?

  Wednesday, April 15, 2015, 17:56:29 + 0000, PhilipMallard wrote:

  I bought a Windows 8.1 today and wish I hadn't! It's a pain to use (I had a Windows 7 previously). None of my games of Cossacks work on windows 8.1 either and I've tried them in compatibility mode. Is it possible to install Windows 7 on my new computer and replace the disastrous 8.1 version?

  I would like to point out something that you may not realize: Windows 8
  has two interfaces; the modern/Metro Interface (which may be all the)
  you have looked at) and the traditional desktop Interface. You can use
  one or both. This traditional desktop Interface is almost
  identical to the interface of Windows 7. the biggest difference is that
  There is no Orb start clicking to bring up the start menu.

  But note that you can get the ORB start by using one of the many
  third-party programs, are free or very cheap (the classic interface
  http://classicshell.sourceforge.NET/ and debut8 to
  http://www.stardock.com/products/start8/; my personal preference is
  Debut8, but they are both very good).  And goes from an interface to
  the other is very easy; There are several ways, but simply by pressing
  the Windows key is perhaps the easiest.

  Just install one of these two and using the traditional desktop computer
  interface may be a better choice for you than going to Windows 7.
  I use Windows 8, almost exclusively with traditional workstations
  the interface and with 8 Start installed. If you were to look at and use
  my computer, you may have a hard time realizing that it is not
  Windows 7.
  I also recommend to read "how to make Windows 8 or 8.1 watch and.
  Want Windows 7 "to http://www.howtogeek.com/elk/298/45121/4206
  I can't address the issue with your games, except to say that
  whenever you move to a new version of the operating system, some of
  which is used to run on the former does not work on the new. And it's
  much more likely with utilities and games with companies
  applications.

• Cannot install add-ons for Firefox for Android

  I have some add-ons installed. However, lately, when I try to install an add-on for Firefox for Android, I get an error message indicating that I have to install Firefox first.

  Only, I use Firefox on my Samsung Galaxy S5 and would like to install more modules. Is there a setting that might make it appear the error message?

  Any suggestions would be greatly appreciated.

  Thank you
  Michael

  Looks like you may have tried to install desktop Firefox extensions in Firefox Android.

  allplayer

  You can change the section at the top where it says other Applications.