Firefox won't start after downloading Wildtangent games

After downloading some games from wildtangent, I tried to start Firefox every single way and the browser does not pop up. I have tried restarting, reinstalling, there is no error message, and no safe mode either.
Solved

This article should help:
https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions

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Firefox won't start after download and update

I have win 7. I uninstalled Firefox and downloaded it again.
The icon appears but the program won't start. I am so used to Firefox and don't want to use IE.
I get a few messages:
XML Parsing Error: undefined entity
Location: chrome://mozapps/content/extensions/update.xul
Line Number 14, Column 1:
<wizard <="" ^="" id="updateWizard" p=""></wizard>
I also get a message:
"There is no disk in the drive-insert a disk into drive/device/hard disk4/dr4
I uninstalled Firefox several times , still no luck
I hope you can help me resolve this problem.
Dkmc7

Well I use system restore to an earlier date in May.
Then I uninstalled all Mozilla files and then I reinstalled Mozilla 29.0.1 and
now my Firefox Mozilla is working fine with all info in my profile intact.
Thank you

Firefox won't start (after downloading Xmarks update)

Hello, this morning I downloaded Xmarks update since that point in time I am unable to open Firefox. I reinstalled the browser a couple of times and I am still unable to open the Firefox. Any ideas? Please.
I use Mac OS X 10.6.4
== This happened ==
Every time Firefox opened
== After downloading Xmarks update. ==
== User Agent ==
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16

@acdeag - Same here w/ regards to Greasemonkey. I've also got trouble w/ the 1Password browser integration. I can't find much about it either. Extremely frustrating.

Firefox won't start after an update. Firefox help says check virtualization settings. What is virtualization settings and where do you check them and for what? I have Windows XP

Firefox won't start after downloading update. I've reinstalled Firefox, still won't start. Help says check virtualization settings. What and where are virtualization settings? I have Windows XP.

This might be Zone Alarm since it provides virtualization. Please try the instructions to turn off virtualization in the following support question
http://support.mozilla.com/en-US/questions/880170

Firefox won't start after update - nothing in support pages helps

windows 7 - firefox won't start after update - no support pages are relevant

-> [[Firefox will not start]]
Check and tell if its working.

Firefox won't start after google chrome imported all data(bookmarks,passwords,history,etc) from firefox

firefox won't start after i import the data to google chrome.

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.com/kb/Safe+Mode
See also:
*http://kb.mozillazine.org/Browser_will_not_start_up

Firefox won't start after windows update

After windows Updated my computer Firefox won't start. I tried a clean reinstall two times, won't work. When I tried to start the firefox the first time after booting my computer it comes with the following message.
XML Parsing Error: undefined entity
Location: chrome://mozapps/content/extensions/update.xul
Line Number 14, Column 1:
<wizard id="updateWizard"
^
Any Help would be greatly appreciated. I like firefox and I'm using it the last 7 Years.
Thanks
DK

I cheated a little bit and put the issue url in a working version of firefox:
chrome://mozapps/content/extensions/update.xul
What I got was a page that looked like this below and console:
blah blah parser:
<pre><nowiki> xml-stylesheet
xml-stylesheet
<wizard id="updateWizard" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" title="Firefox Update" windowtype="Addons:Compatibility" branded="true" onload="gUpdateWizard.init();" onwizardfinish="gUpdateWizard.onWizardFinish();" onwizardcancel="return gUpdateWizard.onWizardCancel();" onclose="return gUpdateWizard.onWizardClose(event);" buttons="accept,cancel" pagestep="1" currentpageid="dummy" firstpage="true" lastpage="true">
<script type="application/javascript" src="chrome://mozapps/content/extensions/update.js"></script>
<stringbundleset id="updateSet">
<stringbundle id="brandStrings" src="chrome://branding/locale/brand.properties"></stringbundle>
<stringbundle id="updateStrings" src="chrome://mozapps/locale/extensions/update.properties"></stringbundle>
</stringbundleset>
<wizardpage id="dummy" pageid="dummy"></wizardpage>
<wizardpage id="offline" pageid="offline" next="versioninfo" label="Firefox is working offline" onpageadvanced="return gOfflinePage.onPageAdvanced();">
<description></description>
<checkbox id="toggleOffline" checked="true" label="Go online now." accesskey="G" oncommand="gOfflinePage.toggleOffline();"></checkbox>
</wizardpage>
<wizardpage id="versioninfo" pageid="versioninfo" next="mismatch" label="Checking Compatibility of Add-ons" onpageshow="gVersionInfoPage.onPageShow();">
<label>
Checking your add-ons for compatibility with this
</label>
<separator class="thin"></separator>
<progressmeter id="versioninfo.progress" mode="undetermined"></progressmeter>
<hbox align="center">
<image id="versioninfo.throbber" class="throbber"></image>
<label id="versioninfo.status" flex="1" crop="right"></label>
</hbox>
<separator></separator>
</wizardpage>
<wizardpage id="mismatch" pageid="mismatch" next="checking" label="Incompatible Add-ons" onpageshow="gMismatchPage.onPageShow();">
<label></label>
<separator class="thin"></separator>
<listbox id="mismatch.incompatible" flex="1"></listbox>
<separator class="thin"></separator>
<label>
Firefox can check if there are compatible versions…
</label>
</wizardpage>
<wizardpage id="checking" pageid="checking" next="noupdates" label="Checking for Compatible Add-ons" onpageshow="gUpdatePage.onPageShow();">
<label></label>
<separator class="thin"></separator>
<progressmeter id="checking.progress"></progressmeter>
<hbox align="center"></hbox>
</wizardpage>
<wizardpage id="noupdates" pageid="noupdates" label="No Compatible Add-ons Found" onpageshow="gNoUpdatesPage.onPageShow();">
<description></description>
<separator class="thin"></separator>
<hbox id="updateCheckErrorNotFound" class="alertBox" hidden="true" align="top"></hbox>
<separator class="thin"></separator>
<description id="noupdatesCheckEnabled" hidden="true"></description>
<vbox id="noupdatesCheckDisabled" hidden="true"></vbox>
<separator flex="1"></separator>
<label></label>
<separator class="thin"></separator>
</wizardpage>
</nowiki></pre>
I do not see much about coloum 14, but I am guessing this file is stored somewhere and its corrupt. Update.xul suggests that it is the update file. Do you still have this in your downloads folder? There are two places for update and for a clean reinstall:
[http://www.mozilla.org/en-US/firefox/new/] in a private window will give you a new install or you can choose from here: [https://www.mozilla.org/en-US/firefox/all/]
This is what the file should look like; [http://hg.mozilla.org/mozilla-central/log/7a2edc5171e6/toolkit/mozapps/extensions/content/update.xul] If you can copy and paste that file from a working browser we can see the issue, but it will just look the same as the error.
if you can replace the contents of the file locally with what it should look like it will fix the error, but who knows if there are other errors. May be best to delete the updater and save all the profile folder contents.

FireFox won't start after upgrading

This morning I upgraded to FireFox 5.0, when it was done installing the upgrade the last window had the option to start FireFox on completion, I left this option checked but after clicking the "Finish" button nothing happened so I clicked the new FF icon on my desktop. Still nothing. I opened Task Manager and nothing was listed on the "Applications" tab but when I clicked on the "Processes" tab there were several instances of FF running so I selected each one and clicked the "End Process" button which worked to exit all but one of them. No matter what I tried it would not terminate that one instance of FF so I shut down the computer. After firing up the computer I tried re-running the FF install app but it kept telling me that I had to exit FF before it could run, I looked in Windows Task Manager again and there was FF listed under "Processes". I restarted the computer to get rid of the running FF and then downloaded the FF file again, but am getting the same results. It just won't start (and it won't even give an error message)! I surfed the Web and found info stating that you could SHIFT click the FF icon to open it in Safe Mode, but that didn't happen either. Any ideas????

it does not work even in windows safe mode with networking. same issue. if i wait for some time firefox comes but in not responding mode. then a pop shows up with - script: chrome//browser/content/tabbrowser.xml 2123 .

Firefox won't start after 18.0.1 upgrade

I have upgraded to the latest version and then two days later, The mozilla Crash reporter opens and it won't start. Nothing happens when I press details.
I can't run it safe mode. The same thing happens.
I uninstalled and re-installed and same thing.
I then uninstalled rebooted and re-installed V16. That was then ok for a few days then same thing happened.
So I unintstalled rebooted and on went V15 which worked for about 8 hours. However I can't get any version to work now. The Crash Reporter pops up whatever version I have.

We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.
#Press the following shortcut to get a Run window: [Windows] + [R]. This should bring up a window that contains a text field.
#In that text field, enter %APPDATA% and press Enter. An explorer window should open.
#From that explorer window, double-click on the ''Mozilla'' folder, then double-click on ''Firefox'' and then on ''Crash reports''. Double-click on ''submitted''.
#Now, you should see a list of files that contain reports. Go to ''View'' > ''Arrange Icons by'' > ''Modified'' to get the most recent files at the top of the window.
#Open the most recent 5 files with a text editor and copy the IDs.
#Paste each ID into the reply window on the forums.
Thanks in advance!
You can find more information and troubleshooting steps in the [[Firefox crashes]] article.

New itunes 5 won't start after download

I downloaded iutnes 5 and now when I click on the desktop icon or the one in the start menu itunes won't start! I also downloaded Norton Internet Security recently so I don't know if that has anything to do with it. Can someone please offer a suggestion as to what I can do to start my itunes. I've wasted so many hours already trying to get it to work....Thanks

Yes, it could be you have "zombie" itunes in your tasks.
But I think it is more likely that some firewall/security software like "norton" is stopping net-enabled software from running. You could look at the task explorer to see if itunes is launching. I prefer the excellent, and free, process explorer from sysinternals.com. For one it is better at stopping zombie processes than task manager.
http://www.sysinternals.com/Utilities/ProcessExplorer.html
So if you don't see any "itunes" or "ipod" processes running then you need to see about enabling them in your "Norton Internet Security"

Firefox won't start after installing an update from Apple - what to do?

I am not computer savvy. When I installed a recent update from Apple on my Mac. Firefox won't open. Safari wouldn't either, but an Apple tech led me through steps to fix it. He didn't know what to try for Firefox.
== right after update was installed and Mac restarted ==
== User Agent ==
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_4_11; en) AppleWebKit/533.16 (KHTML, like Gecko) Version/4.1 Safari/533.16

Then a clear CMOS would be the next logical troubleshooting step.
Here is a link to your motherboard specifications.
The information on clearing CMOS is at the bottom of the document.
This is usually the last step before giving up on a motherboard.
The problem you are facing is motherboard hardware firmware related.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

Windows won't start after downloading driver.

I recently installed an audio driver for my Lenovo Ideatab Lynx but after restarting the device, windows won't start up. It shows the lock screen but after unlocking, the screen stays blank and wont show the start menu. I think i accidentally installed the driver from the windows 8 page when i do have windows 8.1 on my device. Is this why this is happening and how can I fix it?

Satellite P205-S6307
The only way it will start is in safe mode.
So you know how to get to the Advanced Boot Options menu using F8. Go there and choose Repair Your Computer.
When you reach the System Recovery Options menu, choose Startup Repair.
I've tried several things..
If that doesn't fix the normal boot, tell us what you've already tried. There's no point in our repeating all those.
-Jerry

Firefox won't install after downloading.

I recently was having troubles with Firefox, I was running Firefox Beta 18 - it started saying it could not update. So after repeat failed attempts, I figured I'd uninstall it and re-install a fresh version. It will download, I can find the file folder, but even when I try to run it as an administrator it won't open the installer. I downloaded three different versions, all do the same. I'm currently running Windows 8 and have had Firefox for over two years on Windows 7. When I upgraded to Windows 8 it transferred seamlessly with no problems. I'd like to be able to use Firefox again.

You can try booting the computer in Safe Mode with Network Support. This can be done by opening msconfig.
# Enter Desktop mode by pressing Windows Logo + D
# Windows Logo + R
# Type ''msconfig'' and press Enter
# Click on the ''Boot'' tab and choose Safe Mode with Network
# Click Apply/OK
Then restart your computer and it should automatically enter Safe Mode with Network Support. From there, find your installer and try running it again. When it's done, make sure to go back to msconfig and uncheck Safe Mode.
Finally, restart the computer.
Hope this helps!

Firefox won't run after downloading says "File is Corrupt:

I currently use IE and want to switch to Firefox. I click download and run and wait for download to finish.. It says the Fi;e Is corrrupt and ends after the download is complete I have saved the Exec and tried to start it from there with the same results.

Download a fresh Firefox copy and save the file to the desktop.
*Firefox 10.0.x: http://www.mozilla.org/en-US/firefox/all.html
You may have to disable your anti-virus software temporarily to see if that makes downloading work or only the real-time (live) scanning of files.
*http://kb.mozillazine.org/Unable_to_save_or_download_files
Uninstall your current Firefox version, if possible.
*Do NOT remove personal data when you uninstall the current version or you lose your bookmarks and other data because all profile folders will be removed.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*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.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

Firefox won't start after upgrade, it appears on the windows task manager but closing the firefox.exe doesn't help

I upgraded to firefox 4 and it asked me to restart the system, since then it stopped working. it just won't open. I have windows xp and when I click on the firefox icon I see firefox.exe in the windows task manager under 'processes' I tried ending the task but it wont help. i also tried removing and reinstalling.. didn't help either :( I also checked if Kaspersky might be blocking it but it isn't

The only thing that worked for me was installing an older version (3.6) and it started working fine... I dont even want to try upgrading it to 4 again..

Firefox won't start after downloading Wildtangent games

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