My ver. 2.0.0.17 of Firefox wouldn't start and gave me an error that said "couldn't find applications.ini so I reloaded it and it upgraded to ver. 2.0.0.20.

My ver. 2.0.0.17 of Firefox suddenly, without warning, wouldn't start and gave me an error that said "couldn't find applications.ini and trying to start it in "safe mode" didn't work either, so I reloaded it... then it worked and it upgraded me to ver. 2.0.0.20.
Is this a common problem with just that version, or across the board?
I also downloaded version 3.6.3, will that suddenly have the same problem? Is there a quick fix if that happens again?
I have Win XP Home.
== Troubleshooting information ==
DownloadHelper 4.7.3

Acrobat Support

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Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox
If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com

I get a pop up warning that says can't read application.ini an firefox won't open

I've been using firefox browers for a while an never had any problems. Till know. The problems is it won't open.
It can't find or read the application.ini file
I don't know anything about this.
Thk u.

Download a fresh copy of Firefox ( http://www.mozilla.com/firefox/all.html ) and do a reinstall of Firefox on top of the current version.
If that still causes the same problem then do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.<br />
Don't remove personal data when uninstalling.<br />
It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

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Hi,
Please try this: https://www.mozilla.org/en-US/firefox/new/

I'll appreciate your suggestions as Firefox is not opening. A window warns: "XULRUNNER. Error: App: Name not specified in application.ini"

When trying to open Firefox a small warning window labeled XULRUNNER is appearing, with the text: "Error. App: Name not specified in application.ini", and an "accept" button. When you click in "accept" the warn ing window closes, but then nothing more happens.
I have no idea what is going on. Any ideas?

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Can't start Firefox, XULRunner reports Error: App:Name not specified in application.ini

application.ini contents:
<pre><nowiki>2 17583/20136 22 2010.09.08 23:55:35 \Device\HarddiskVolume6\yenc\Xnews.ini
1 2217/2217 1 2010.09.08 23:25:04 \Device\HarddiskVolume1\Documents and Settings\evo\Mina dokument\Hämtade filer\emule049c.exe
1 3525/3525 1 2010.09.08 23:25:04 \Device\HarddiskVolume1\Documents and Settings\evo\Mina dokument\Hämtade filer\install_flash_player.exe
2 105/985 10 2010.09.08 23:14:53 \Device\HarddiskVolume1\WINDOWS\NeroDigital.ini
1 3599/4099 1 2010.09.08 23:04:43 \Device\HarddiskVolume1\WINDOWS\Temp\AskBarDis\upgrade\UpgradeData.xml
1 3282/23225 6 2010.09.08 23:04:43 \Device\HarddiskVolume1\Documents and Settings\evo\Application Data\Mozilla\Firefox\Profiles\wu5lq6am.default\sessionstore-3.js
1 3758/3758 1 2010.09.08 22:54:32 \Device\HarddiskVolume1\Documents and Settings\evo\Mina dokument\Hämtade filer\FoxitReader.exe
1 2057/2721 1 2010.09.08 22:34:12 \Device\HarddiskVolume1\Documents and Settings\evo\Skrivbord\WinUHA 2.0 RC1 (2005.02.27).exe
1 7384/12265 2 2010.09.08 22:34:12 \Device\HarddiskVolume1\Program\Mozilla Thunderbird\thunderbird.ex</nowiki></pre>

Hi Guys I have SOLUTION for that. I perhaps could not attach my file here but let me still tell you the solution.
You need "Application.ini" file from any other pc having Mozilla over it. There is no complex information in this file although. I will past code of that file here so you could copy that to your file as it is.
After doing this if you get any different error prompting for version error then open this "Application.ini" file again where you just copied code. and change the version (you will find version text on second line at end) to appropriate one according to the Error Alert you just encountered before.
That's it.
Application.ini File Code is below
(whole code must come in three lines, I can see line break special characters in special rectangular format)
; ***** BEGIN LICENSE BLOCK *****
; Version: MPL 1.1/GPL 2.0/LGPL 2.1
; The contents of this file are subject to the Mozilla Public License Version
; 1.1 (the "License"); you may not use this file except in compliance with
; the License. You may obtain a copy of the License at
; http://www.mozilla.org/MPL/
; Software distributed under the License is distributed on an "AS IS" basis,
; WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
; for the specific language governing rights and limitations under the
; License.
; The Original Code is Mozilla Firefox.
; The Initial Developer of the Original Code is
; Benjamin Smedberg <[email protected]>.
; Portions created by the Initial Developer are Copyright (C) 2006
; the Mozilla Foundation <http://www.mozilla.org/>. All Rights Reserved.
; Contributor(s):
; Alternatively, the contents of this file may be used under the terms of
; either the GNU General Public License Version 2 or later (the "GPL"), or
; the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
; in which case the provisions of the GPL or the LGPL are applicable instead
; of those above. If you wish to allow use of your version of this file only
; under the terms of either the GPL or the LGPL, and not to allow others to
; use your version of this file under the terms of the MPL, indicate your
; decision by deleting the provisions above and replace them with the notice
; and other provisions required by the GPL or the LGPL. If you do not delete
; the provisions above, a recipient may use your version of this file under
; the terms of any one of the MPL, the GPL or the LGPL.
; ***** END LICENSE BLOCK *****
[App]
Vendor=Mozilla
Name=Firefox
Version=3.5.11
BuildID=20100701023340
SourceRepository=http://hg.mozilla.org/releases/mozilla-1.9.1
SourceStamp=56248d52ac25
Copyright=Copyright (c) 1998 - 2010 mozilla.org
ID={ec8030f7-c20a-464f-9b0e-13a3a9e97384}
[Gecko]
MinVersion=1.9.1.12
MaxVersion=1.9.1.12
[XRE]
EnableProfileMigrator=1
EnableExtensionManager=1
[Crash Reporter]
Enabled=1
ServerURL=https://crash-reports.mozilla.com/submit

Firefox worked briefly but now I get xul cannot find application.ini message and it will not start. Tried reinstalls.

Love Firefox but now it will not open. When I try to open it, I get an error message that xul can't find the application.ini.
== This happened ==
Every time Firefox opened
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== User Agent ==
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; GTB6; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

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Hopefully this support article is what you need:
https://support.mozilla.com/en-US/kb/Firefox+will+not+start
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My ver. 2.0.0.17 of Firefox wouldn't start and gave me an error that said "couldn't find applications.ini so I reloaded it and it upgraded to ver. 2.0.0.20.

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