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);

Similar Messages

Is there a way to prevent add-ons from being disabled? (i.e. prevent safe-mode, etc.)

If you have a content blocker installed, it can be disabled by starting firefox in safe mode or by disabling it in the add-ons screen. Any way to prevent this?

No, you can't prevent starting Firefox in [[Safe mode]] to disable extensions.
You will have to use outside Firefox if you want to block content.
* http://kb.mozillazine.org/Parental_controls
* http://en.wikipedia.org/wiki/Category:Content-control_software
* http://en.wikipedia.org/wiki/List_of_content-control_software
* http://en.wikipedia.org/wiki/K9_Web_Protection

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.

How can I access the add-ons from my earlier version of Firefox?

Firefox disappeared from my computer after a malware attack. Unfortunartely, my add-ons and extensions have also disappeared. I've tried to re-install my original Firefox 4, but without success. Firefox 9.01 has been installed and I cannot access my original Firefox 4 and m;y add-ons and extensions. Can anybody help please. in English

As far as i understand the plugins are installed in the 'plugins' directory (look for this inside the directory where you installed the Firefox). In Windows it should be something like 'C:\Program Files\Mozilla Firefox\Plugins'. If plugins are there then this directory should NOT BE empty
You can also cross check whether the plugins are there are not via Firefox itself (Tools -> Add-ons -> Plugins) See if this lists out anything or not.
Most probably what happened is that when the new version of the Firefox was installed it overwrote that 'plugins' directory and hence now is not able to find them.
Have a look at these website also:-
http://kb.mozillazine.org/Move_plugins_to_another_location_-_Firefox
http://kb.mozillazine.org/Installation_directory

How to fix problem with installed and working add-ons disappearing after update to 20.0.1?

I updated to version 20.0.1 of Firefox the other day. I had the theme Qute 3++ 1.19 installed and it took 3 restarts of the browser before it kicked in and worked again, for some reason.
Then I noticed that my MillBar Community toolbar 3.18.0.7 had disappeared, which I use for the feature of collecting my email accounts to get fast notifications about new emails. Also my Adblock Plus 2.2.3 seems to not be working because all of a sudden I see ads everywhere and I also discovered a bunch of pop-ups from nowhere. I used these add-ons for such a long time that I was shocked.
When i went to type a message to a friend, I also noticed that my american-english dictionary/spellchecker was not working.
The first thing I checked was that none of these add-ons was inactivated or said to need updates. The dictionary had disappeared, so i re-installed that. I also reinstalled Adblock Plus. Still it doesn't work.
When i entered the email information into the toolbar options, it collects my emails for a while, but suddenly it stops and the information is not there anymore. If I restart the browser it also disappears.
Same thing with the dictionary. it works for a while, and then suddenly it's like it's disabled.
And the add-ons are still in what seems like working conditions in my lists. No errors that I can see, no updates available.
I'm really at a loss as to what to do, I've never had problems like this before that couldn't be solved with an update of the add-on. So I'd be very grateful for help with this and hope that I have provided enough information.

this help is not useful.
Since the new firefox version 20.0.1, '''no more of my add-ons work''' (except firebug ). They are installed '''but not visible '''(no toolbar, no menus) !!! same for the new add - ons that I installed. I tried everything: to reinstall add-on, to reinstall firefox.
this new version of firefox is really horrible, '''thank you for making a corrective because I cannot work any more with'''

How i can delete a add ons are disabled and have not remove botom ?

how i can delete a add ons are disabled and have not remove botom
http://dl.dropbox.com/u/10490895/screenshot-73.jpg
[http://example.com http://dl.dropbox.com/u/10490895/screenshot-73.jpg]

'''Ctrl+Shift+A''' should also open the Addons Manager.

How do I restore the add-ons that I downloaded and installed?

I thought I wanted to be a Firefox 4 beta tester. I downloaded the program and proceeded to install. During the installation, a message popped up and said these add-ons were not supported. I think it disabled either some or all of the add-ons. It continued with the installation. I don't know if this is related or not but I use Google Chrome while using Facebook to play some game applications. Every time that I have used Chrome today, I get "page unresponsive" message with the option to kill the page or wait for it to become responsive. That message is followed by "the following plug-in is unresponsive": shockwave flash player would you like to stop it? Well, if you click "yes" you can't play, if you click "no" it eventually crashes anyway. I finally uninstalled Firefox 4 beta. When I went back into Firefox 3.6, I noticed that the Zynga toolbar that I downloaded to use with my Facebook game applications is gone. Like I said I don't know if the one problem is related to the other but I wasn't having any issues with Google Chrome until I downloaded and installed Firefox 4 beta. I need to know how to restore to those add-ons that I downloaded and installed prior to downloading the Firefox 4 beta program.

See [[Profiles]] and [[Managing profiles]]

How do I maintain my add-ons if I deside to quit cc-cloud membership and try to manage with my old DW4-version?

How do I maintain my add-ons if I deside to quit cc-cloud membership and try to manage with my old DW4-version?

You don't. Extensions are always version specific and DW4 could not support them in the first place because back then many things liek jQuery, HTML5 or CSS 2.1 didn't even exist or were in their infancy.
Mylenium

How to determine which new add-ons were installed?

I am troubleshooting on a system that I use regularly, but I am not the primary user. When I started Firefox today I got an Add-ons window saying that "3 new add-ons have been installed". I'd like to know which 3 are the newly installed add-ons, because I suspect they are things my mother agreed to inadvertently. This system now has 15 Extensions, 1 Theme, and 17 Plugins installed, including the 3 new ones. Is there any way for me to determine which 3 are the new ones? By the way, I'm not entering this question from the system inquestion, so any info of that type that gets appended to this submission should be ignored. The system in question is running Windows XP Home SP3 and Firefox 3.6.10.

Pre-Deployment Planning — Enterprise Administration Guide States "
Installing Acrobat DC Standard¶
Acrobat DC products delivered via an ESD EXE download provide one installer that is used for both Acrobat Standard and Professional. The serial number you use determines which product is installed. What’s important to note is that when you extract the Acrobat ESD EXE (Acrobat_DC_Web_WWMUI.exe or Acrobat_2015_Web_WWMUI.exe), you’ll see AcroPro.msi in the output folder. This is the correct behavior. Simply remember to use AcroPro.msi in any command line scripts.
Note
Existing scripts that use AcroStan.msi should be updated."
Both Acrobat DC Pro and Standard have KEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Adobe\Adobe Acrobat\2015\Installer ENU_GUID {AC76BA86-1033-FFFF-7760-0E0F06755100}
On the laptop with DC standard installed C:\ProgramData\regid.1986-12.com.adobe\regid.1986-12.com.adobe_V7{}AcrobatESR-12-Win-GM-e n_US.swidtag
On the laptop with DC Pro installed C:\ProgramData\regid.1986-12.com.adobe\ is empty
Your guide does not have any information regarding Acrobat DC. Please explain how to verify if Acrobat DC Pro or standard is installed. or explain how to get the ENU_GUID for standard to start with {AC76BA86-1033-FFFF-BA7E.

How do I disable all add-ons so add-on pop-ups do not occur in Firefox?

When I am using an web-based application in firefox, I keep getting pop-up windows for add-ons to firefox. How can I stop these from occuring if I do not want any add-ons ever?
== This happened ==
Not sure how often
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MDDR)

Hello Don.
You can access the add-on manager by going into Tools > Add-ons. It's the Extensions tab you want, most likely, since plugins and themes tend not to make popups appear.
If you want to disable the automatic update of add-ons, simply go into Tools > Options > Advanced > Updates and untick "Add-ons".

I have a second laptop. How do I find which add-ons i have on my first laptop?

I recently bought a second laptop. How can I determine which add-ons I currently have installed on my first computer?

You can look in Firefox Button > Add-ons
You can add the following extension to list them for you. Adds a button in Firefox 4 Add-ons window/tab "Dump List". Click that button, window opens, if you just want extension names and version only, un-check everything except version, then save the list to a file by clicking save at the bottom of the window it opens or highlight the list, then Ctrl+C to copy, open Notepad, Wordpad or another application (Word), and paste, then save if you wish:
*'''''Extension List Dumper''''': https://addons.mozilla.org/en-US/firefox/addon/extension-list-dumper/
 
 
'''You need to update the following (all of your versions have known security issues):'''
*Adobe Shockwave for Director Netscape plug-in, version 11.0
*Adobe PDF Plug-In For Firefox and Netscape "9.4.2"
*Shockwave Flash 10.2 r152
*Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers
#'''''Check your plugin versions''''' on either of the following links':
#*http://www.mozilla.com/en-US/plugincheck/
#*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
#*'''Note: plugin check page does not have information on all plugin versions'''
#'''Update Shockwave for Director'''
#*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
#*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
#*When the download is complete, exit Firefox (File > Exit)
#*locate and double-click in the installer you just downloaded, let the install complete.
#*Restart Firefox and check your plugins again.
#*'''Download link and more information''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
#'''Update Adobe Reader (PDF plugin):'''
#*From within your existing Adobe Reader ('''if you have it already installed'''):
#**Open the Adobe Reader program from your Programs list
#**Click Help > Check for Updates
#**Follow the prompts for updating
#**If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below
#*Download complete installer ('''if you do NOT have Adobe Reader installed'''):
#**SAVE the installer to your hard drive (save to your Desktop so that you can find it after the download). Exit/Close Firefox. Run the installer you just downloaded.
#**Use either of the links below:
#***https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox ''(click on "Installing and updating Adobe Reader")''
#***''Also see Download link''': http://get.adobe.com/reader/otherversions/
#*After the installation, start Firefox and check your version again.
#'''Update the [[Managing the Flash plugin|Flash]] plugin''' to the latest version.
#*Download and SAVE to your Desktop so you can find the installer later
#*If you do not have the current version, click on the "Player Download Center" link on the "'''Download and information'''" or "'''Download Manual installers'''" below
#*After download is complete, exit Firefox
#*Click on the installer you just downloaded and install
#**Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator"
#*Start Firefox and check your version again or test the installation by going back to the download link below
#*'''Download and information''': http://www.adobe.com/software/flash/about/
#**Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE)
#**Use IE to go to the above site to update the IE ActiveX
#*'''Download Manual installers'''.
#**http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller
#**Note separate links for:
#***Plugin for Firefox and most other browsers
#***ActiveX for IE
#'''Update the [[Java]] plugin''' to the latest version.
#*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
#**'''''Be sure to un-check the Yahoo Toolbar option during the install if you do not want it installed.
#*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
#* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
#* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
#*Java Test: http://www.java.com/en/download/help/testvm.xml

How to Enable IE 10 add-ons to create PDFs?

I have IE 10 64 bit on Windows 8 64bit. I have Adobe Acrobat XI Pro.
In the Manage Add-ons area of IE 10 three add-ons for "Adobe Acrobat Create PDF" for the Helper, for Selection, and Toolbar. which are labelled as disabled. They are marked to 32 bit and 64bit architecture but when I right click on any of the three add-ons the Enable and Disable selections are grayed out. The more information selection reveals this.
Name:                   Adobe Acrobat Create PDF from Selection
Publisher:              Adobe Systems, Incorporated
Type:                   Browser Helper Object
Architecture:           32-bit and 64-bit
Version:                11.0.4.63
File date:              Thursday, September 5, 2013, 7:04 AM
Date last accessed:     Today, September 30, 2013, 29 minutes ago
Class ID:               {F4971EE7-DAA0-4053-9964-665D8EE6A077}
Use count:              0
Block count:            1394
File:                   AcroIEFavClient.dll
Folder:                 C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\x64
How do I enable these add-ons?

Thanks Bill,
Yes, the plug-ins are there in "Manage Add-Ons>Toolbars and Extensions." But, when I select any of the three Add-ons for Adobe Acrobat, the view that follows has the "enabled" and "disabled" buttons grayed out. No matter how many times I select enable, the add-ons remain disabled.
I think the add-ons only work for 32 bit Internet Explorer, not the 64 bit Internet Explorer, or maybe not even for Windows 8 64 bit.
Ken

When I open Add-ons, from the Tools menu, I get an unresponsive script error: file:///C:/Program%20Files/Mozilla%20Firefox/components/nsExtensionManager.js:623.

When I try to click on Add-ons, from the Tools menu, I get this error message of an unresponsive script: file:///C:/Program%20Files/Mozilla%20Firefox/components/nsExtensionManager.js:623. This is to say the least about the unresponsive script errors at other times. However, at all times, it won't go away - even by clicking on the 'stop script' option; even with checking the 'don't ask again' option. I've cleared the cookies and history as best I could, but it appears that there is some sort of conflict. How can I resolve this? Kevin: [email protected] Thank you.

This is typically caused by a problem with the Personas Plus 1.6 add-on and it conflicting with the Google toolbar.
Try disabling the Personas Plus add-on. To do this open the add-ons manager by selecting the Tools menu, then Add-ons. In the list of installed extensions click on Personas Plus, then click on either disable or uninstall.
If you can not access the add-ons manager, follow the instructions in the [[safe mode]] article to start Firefox in safe mode. You should then be able to disable or uninstall Personas Plus. You can find more information on this procedure in the [[Troubleshooting extensions and themes]] article.

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

Had to reinstall Lion. Backed up music to external hard drive. When I plug in iPod msg says it's synced w/another iTunes library. Do i "erase and sync" and re-add music from the hard drive?

Had to reinstall Lion. Backed up my music to an external hard drive. When I plug in my iPod a prompt msg says it's synced w/another iTunes library and asks if I want to "erase and sync" (to what is now an empty library) or "Transfer purchases". Do i "erase and sync" and re-add music from the hard drive once that's done?

You just need to tell iTunes where the library is located. If you want it back on your internal drive, copy the entite iTunes folder. Follow the instructions below.
iTunes: How to move your music to a new computer (Mac or Windows):
http://support.apple.com/kb/HT4527

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

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