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Mozilla Firefox ESR
Overview
Why Firefox ESR?
Version History
Product Details
System Requirements
Licensing Information
Lab and Classroom Availability
Installation Instructions
Who To Call
Questions, Tips and Tricks
Technical Troubleshooting
Overview
Mozilla Firefox is the recommended Web browser for use on Mac OS X, Windows, and other platforms.  is an introductory page. Mozilla Firefox ESR Here
(Extended Support Release) is a stable Firefox release which receives the same security updates as the standard version of Firefox but doesn't receive 
feature updates. It is intended for use by universities, businesses, and others who need extended support for mass deployments. Carleton ITS pushes 
.Firefox ESR and updates through KBox
The current version of Firefox ESR is 10.0.5.
For more information, see .here
Why Firefox ESR?
Firefox ESR was introduced as an option for organizations that were struggling to keep up with the rapid release plan and limited extended support of the 
standard browser. Additionally, Firefox 10 supports the same addons used at Carleton that were supported in Firefox 3.6 but not necessarily in Firefox 4 
through 9.
Version History
Versions of Firefox through 3.6.18 were introduced slowly, with updates (patches) to change minor versions (e.g., 3.6.33.6.4) and new releases to upgrade 
to new major versions (e.g., 3.5.x3.6.x). Starting with version 4.0, Mozilla changed this policy, aggressively releasing new major versions for consumers 
every six weeks, at the same time dropping support for older versions and seldom releasing security patches. On the day each new consumer version is 
released, the previous consumer version is considered "end-of-life", receiving no more security updates.
Because many organizations and software developers struggled with the new rapid release plan, in January of 2012, Mozilla introduced a new update 
channel, Extended Support Release. The  version of Firefox 10, intended for enterprises, reached end-of-life November 20, 2012 (when version 17 ESR
ESR is released), and received security updates as minor releases (e.g. 10.0.1, 10.0.2). Every six weeks, when a major new consumer version is released, 
the ESR version will also receive a minor upgrade for security only, not for new features. At the end of life of version 3.6, Firefox 10 ESR was the new 
stable release channel, and the one preferred at Carleton. At the end of life of version 10esr, Firefox 17esr was the new stable release channel, and the 
one preferred at Carleton. At the end of life of version 17esr, on December 10, 2013, Firefox 24esr was the new stable release channel, and the one 
preferred at Carleton. At the end of life of version 24esr, expected October 14, 2014, Firefox 31esr will be the new stable release channel, and the one 
preferred at Carleton.
We need to draw this distinction between "supported" (3.6.x, then 10.0.x ESR then 17.0.x esr then 24.x.x esr then 31.x.x esr) and "new" (4/5/6/7/8/9/11/12
/13/14/15/16/18/19/...) consumer versions because of compatibility problems. More and more of our enterprise applications are Web-based, using a Web 
browser as their user interface and launch point. A few applications, most notably AWA (Advance Web Application) and WebCheckout, are sensitive to the 
Web browser and version. Therefore, ITS is going to provide an ESR replacement for consumer versions of Firefox. Note that earlier versions 2.x, 3.0.x, 
3.5.x, and 3.6.x are obsolete, no longer supported and no longer receiving security updates.
Product Details
Firefox is an open source project of the  Foundation.Mozilla
The  home page, a starting point for all things FirefoxFirefox
The Mozilla Firefox  home pageESR
The Firefox 4/5/6/...  home page, a starting point for questionssupport
System Requirements
Here are the system requirements for these new versions. In general, all you need is a fairly new operating system.
Licensing Information
As open source software, Firefox is freely distributable for individuals and organizations.
Home Use
We recommend Firefox for use on home computers. Get it from the Firefox home page or  .here
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Lab and Classroom Availability
Firefox is available on all college-owned machines in all labs and classrooms. As of summer 2014, it will be version 31esr.
Installation Instructions
Labs and Classrooms
To request this software be installed on a refreshing lab/classroom contact xxx
Link to protected information for how we configured it to work
College Owned Equipment
Firefox is available through our campus KBOX software distribution system. The Windows versions are visible in the  to all users, KBOX user portal
who may contact the ITS HelpDesk to get this installed on any college-owned computer.
Windows Upgrade (or downgrade) of any version of Firefox to new supported version 31esr:
From the KBOX user portal, choose "Install Mozilla Firefox 31.x.z", which is the ESR release as the description indicates.
Firefox should be updated to the very latest 31.x.z ESR version the next time that  is run. To update it immediately, login KBOX patching
as a Windows Administrator-equivalent and launch Firefox; from the Firefox dropdown menu at the upper left of the browser window, 
choose HelpAbout Firefox, then choose the Check for Updates button.
If Firefox advises you to update any plugins (e.g., Java, Adobe Reader, Flash), look for those plugins first in the KBOX user portal list. 
Most plugins are also updated by KBOX patching.
Note: This is only for machines with an existing version of Firefox installed, older or newer. For a machine with  version of Firefox no
installed, from the KBOX Admin UI, find the Managed Install (MI) named "Install anew Firefox 31esr", add this machine to the section 
titled, "Limit Deployment to Listed Machines", and Save. After the MI runs (which takes a while), remember to return to this MI and 
remove this machine from the list.
If you have the Firefox you want for Windows but are missing the  and customizations, copy  from Carleton bookmarks carleton-cck.xpi
SWARCHIVE\OriginalMedia\Firefox (or maybe find it under C:\ProgramData\Dell\KACE\downloads) to some location on the local machine, then 
start Firefox and Open (Ctrl-O) that file from where you copied it. When prompted, choose Install, then when offered a chance, choose Restart 
Firefox. This also works on personal machines running Windows.
Link to protected information for ITS instructions
Personal Machines
Get it from the Firefox home page or  , and install it in the default directory.Use the FileImport command to copy options, bookmarks, history, here
passwords, and other form data from another Web browser or another Firefox profile.
Who To Call
The ITS HelpDesk fully supports the use of Firefox on Windows and Mac OS X. The KBOX package for Mac OS X was prepared by Rebecca Barkmeier in 
Desktop Systems.
S.Nissen originally authored the Windows information in this article, but after April 1, 2015, Rebecca Barkmeier will be responsible for the packaging of this 
application for Windows, so all questions should be directed to her.
Questions, Tips and Tricks
#1 help tip:
You just upgraded to Firefox 4/5/6/7/8/9/10/11/12/13/14/..., and you don't see the toolbars you used to see. To get them back on Windows, press an  Alt
key, which will display the menu bar, from which you can choose ViewToolbars to turn any of the toolbars on or off. (You can also move the Tabs toolbar 
down from the top using ViewToolbarsTabs on Top.) To get back more 3.6-like features, see the extensions discussed  .here
For a visual guide to the changes between version 3.6.* and 10 ESR, see  article.this
#2 help tip:
NEW: You just upgraded to Firefox 31 or later (from a version before 29), and you hate the new Australis user interface which lacks the orange Firefox 
menu button in the title bar at the upper left. You can get back that menu button, as well as other pre-Australis features, by installing and configuring the 
extension "Classic Theme Restorer", available from . Note that ITS does not support this extension or provide it on public lab computers. But the new here
triple dash menu button () toward the right end of the toolbar offers some of the features you may be missing.
Click-to-Play
NEW: Firefox 10 esr implemented a new feature called the : Firefox contacts Mozilla (about once a day) to see if any of its installed plugins (like blocklist
Flash, Java, Adobe Reader) are on the blocklist, and if so, disables them. The blocklist is a list of specific plugin versions that are no longer current and 
known to be vulnerable to security exploits. Firefox 17 esr changes that with a new prompt they call "Click-To-Play": if a plug-in is on the blocklist but it gets 
invoked by a Web page, Firefox will prompt the user whether they want to load the unsafe plugin anyway. You can read more about how Click-to-Play 
, or .works what to do when you are prompted
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Firefox and Java (JRE)
As more and more Java exploits have been discovered, the makers of Firefox, Mozilla, have made it more and more difficult to run Java in Firefox at all. 
Starting with Firefox versions 24 and 24esr,  version of Java, even the very latest version, may be blocked, and there may be no "Click-To-Play" every
prompt to get around the block. The only workaround for a user is to enable Java for a particular Web site, using these instructions: https://support.mozilla.
 . Please do this only if you know a Web site requires Java to function. It may be easier just to use a org/en-US/kb/how-to-enable-java-if-its-been-blocked
different Web browser for your Java-based Web sites.
PDF documents in Firefox
NEW: PDF documents are sometimes known as Adobe (or Acrobat) documents, a format designed for viewing and printing pages. Starting with Firefox 
24esr, Firefox has its own  (based on JavaScript), so it no longer invokes the default PDF reader on the computer.built-in PDF viewer
If you save a PDF file to the local hard drive, then double-click to open it, the default PDF reader on this computer will always be invoked. On Windows, the 
default PDF reader is likely to be Adobe Reader; on Macs, it could be Adobe Reader, or more likely the Viewer application. On Windows 8.*, it might be the 
built-in Reader app.
It is possible to change Firefox settings to restore the default PDF viewer to work inside of Firefox:
In Firefox, open a new tab and in the Location textbox, enter: about:config
In the Search textbox at the top, type pdfjs . This will filter the list of settings so you can see the setting . Double-click that setting to pdfjs.disabled
change its value from false to true.
Back in the Search textbox, type plugin.   . This will filter the list of settings so you can see the setting plugin.
 . Double-click that setting so you can edit it. Copy the entire string then paste it into an empty text or note disable_full_page_plugin_for_types
file, so you can restore it if necessary.
Somewhere in that long string setting, probably at the end, is the value ; remove that value. (Or you can empty the whole string.)application/pdf
Exit Firefox and restart it, then find a PDF file on the Web. It should now open in your default PDF reader.
If you don't like the options presented for opening your default PDF reader,  instructions explain how to change those settings.these
Caution: Any time you are making changes to the settings in about:config, a mistake in the wrong place could break Firefox. So be very careful in what 
you edit, and save copies and notes of what you did.
Technical Troubleshooting
Firefox stores all its bookmarks, cookies, etc. for a user in a , which on Windows is a directory in the  , under %AppData%Firefox profile %UserProfile%
\Mozilla\Firefox\profiles. (In other words, one user may have multiple Firefox profiles.) Firefox prefers to randomly name that directory, but on college-
owned computers, with Firefox 3.6 and 10ESR we try to force the name to be 00000000.default.  is the Firefox support explanation.Here
In the process of installing a different version of Firefox, the user might get a new empty profile which does not have his saved bookmarks, cookies, etc. 
Those are still on the computer, just in a different Firefox profile. If you can locate that other Firefox profile directory by looking for the recently modified 
files, you can import those settings (or copy those files) to the active Firefox profile. On Windows, to tell which is the active Firefox profile for a user, look at 
the text file %AppData%\Mozilla\Firefox\profiles.ini; in the [Profile0] section, the Path= line will point to the active profile; e.g., Path=Profiles/00000000.
default , which means %AppData%\Mozilla\Firefox\Profiles\00000000.default.  Firefox support article identifies the specific files you can copy, but I find This
it easier and safer just to use the Import command, from either the File menu, or from HistoryShow All HistoryImport and BackupImport Data from Another 
Browser....
At any time, if Firefox is not recognizing all installed , on Windows exit Firefox and delete the file pluginreg.dat from %AppData%\Mozilla\Firefox. plugins
The next time you start Firefox, that file will be rebuilt. For more information on troubleshooting plugin problems, see  Firefox support article.this
Having problems  vertically, when using a Lenovo ThinkPad or other Synaptics touchpad? This is a known bug, so try adjusting a Firefox setting, scrolling
while logged in as the user:
"Modify the pref  on the about:config page from the default value -1 to 0 or 1 to see if that makes the scroll pad work. Close ui.trackpoint_hack.enabled
and restart Firefox after changing the pref, as described here:  "http://kb.mozillazine.org/about:config
In Firefox 24 and later, do your  than in earlier versions? (text on Web pages, not in PDF documents) Try these three possible fixes, text fonts look fuzzier
one at a time:
Choose FirefoxOptionsOptionsAdvancedGeneral and uncheck " ". If that did not fix it, put the setting Use hardware acceleration when available
back the way it was.
Enter  on the Location line, then on the Search line enter ; double-click it in the Preference List to change about:config gfx.content.azure.enabled
it from true to false. If that did not fix it, put the setting back the way it was.
Enter  on the Location line, then on the Search line enter ; double-click it in the Preference List to change it about:config gfx.direct2d.disabled
from false to true. If that did not fix it, put the setting back the way it was.