After recent upgrade, Firefox won't start. Just flickers once when I click on a link or on its icon.

My version is 32. "Best Solution" says click the upgrade button to get v34. But I can't do that if FF won't open.
I have Mac OS 10.9.5

You can check if you can start Firefox in [[Safe Mode|Safe Mode]] by holding down the Options key.
Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
*Do NOT click the Reset button on the Safe Mode start window
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Similar Messages

After recent upgrades Firefox prevents links in several websites from working whilst there is no such problem with other browsers - help please.

Since a recent upgrade of Firefox links in several websites no longer work. They used to be fine and I loved Firefox. The problems do not exist with other browsers e.g. Internet Explorer, Google Chrome. More specifically, on talktalk.co.uk the links to news items do not work, nor do those to "My Account." On Barclays.co.uk the link to print my statement doesn't work - similarly on MBNA.com
There are several suggested solutions around the internet but all are complex, none so far have worked and I don't see why I should need to carry out the suggested tweaks. Firefox used to be great - now it isn't. The problem seems to be with the upgrade. Please help me to get my Firefox to where it should be.

Thank you but please don't waste any more time on this. I have done as I said I would - removed and re- installed Firefox, cleared all cookies and caches (CCleaner) - still doesn't work. As I said at the start, the problem is not confined to Talktalk - it applies to several other sites and links. The problem does not occur with Internet Explorer nor with Google Chrome so I am now using those.

My firefox won't create a new tab when I click on the tab. It will create a new window. It worked fine till this morning. I've rebooted several time to see if that would make a difference. It doesn't.

I can only create tabs by clicking on a link in an email or a program or a link in the window I am viewing. It will NOT create a new tab when I click on the tab to create a new tab, nor will it create a new tab when I right click on the tab & click on create a new tab. I'm used to using tabbed browsing all the time & it's driving me nuts. HELP!
I have not downloaded any new updates on any software or downloaded any new software in the hours before this started happening.
Just to clarify about my original question. I meant to say that firefox will create a new window when I right click & click on create a new window but will not create a new tab when I click on create a new tab. I think what I wrote may have been somewhat confusing.

Do you have that problem when running in the Firefox SafeMode? 
[http://support.mozilla.com/en-US/kb/Safe+Mode] 
''Don't select anything right now, just use "Continue in SafeMode."''
If not, see this: 
[http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes]

Help! I am unable to even download Firefox. The "run" window never opens when I click the download link.

I am currently using Internet Explorer Version 8.0.6001.18702IC on my PC desktop, and want to switch to Firefox. I have clicked the download link in several places with no result at all

Don't try to run the Firefox installer directly, but save the file to the desktop and start the installation with a double-click. 
You may need to disable your anti-virus software temporarily if you still have problems.
You can find the latest Firefox release in all languages and for all Operating Systems here:
*Firefox 12.0.x: http://www.mozilla.org/en-US/firefox/all.html

I use links embedded in emails that place appointments on people's calendars -- always use to work in firefox. Since the last update, just get code when i click on the link for the appointment.

'''I create these types of links.'''
ADD THIS EVENT TO YOUR CALENDAR
<www.afponline.org/pub/cal/ics/CTC_Executive_Roundtable_and_Dinner_FortLauderdale.ics>
Since the last update, instead of getting an appointment in my calendar, i got this page of code, but in IE it still works fine.
BEGIN:VCALENDAR
PRODID:-//Microsoft Corporation//Outlook 12.0 MIMEDIR//EN
VERSION:2.0
METHOD:PUBLISH
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
CREATED:20100803T134051Z
DESCRIPTION:CTC Executive Roundtable\n4:30 – 6:30 p.m. Roundtable \n6:30
– 8:00 p.m. Dinner\nBin 595 (inside the Renaissance - Fort Lauderdale)\n
1230 South Pine Island Road\nPlantation\, FL 33324\n
DTEND:20100903T000000Z
DTSTAMP:20100803T134052Z
DTSTART:20100902T203000Z
LAST-MODIFIED:20100803T134051Z
LOCATION:Bin 595 (inside the Renaissance - Fort Lauderdale)
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:CTC Executive Roundtable and Dinner
TRANSP:OPAQUE
UID:040000008200E00074C5B7101A82E0080000000090812BF6EF32CB01000000000000000
010000000012A2164B6741F4D803D4EEF393A9457
X-ALT-DESC;FMTTYPE=text/html:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//E
N">\n<HTML>\n<HEAD>\n<META NAME="Generator" CONTENT="MS Exchange Server ve
rsion 08.00.0681.000">\n<TITLE></TITLE>\n</HEAD>\n<BODY>\n\n\nCTC Executive Roundtable\n\n4:30
– 6:30 p.m. Roundt
able \n\n6:30 – 8:00 p.
m. Dinner</SP
AN>\n\nBin 595 (inside the Renaissance - Fort Lauderdale)</S
PAN>\n\n1230 South
Pine Island Road\n\nPlantation\, FL 33324</SPA
N>\n\n</BODY>\n</HTML>
X-MICROSOFT-CDO-BUSYSTATUS:BUSY
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-DISALLOW-COUNTER:FALSE
X-MS-OLK-ALLOWEXTERNCHECK:TRUE
X-MS-OLK-AUTOFILLLOCATION:FALSE
X-MS-OLK-CONFTYPE:0
BEGIN:VALARM
TRIGGER:-PT5M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
END:VEVENT
END:VCALENDAR

Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do NOT click the Reset button on the Safe mode start window or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Windows 8. I open a new firefox and get on a page. When I click on a link, example my schools website, it goes to a random page.

I have a new laptop, windows 8. I have Avira, popup blockers. This is what happens:
I open Firefox. It goes directly to google.com, my home page. I click on say my schools website and I go to put the cursor on the login and it opens up this random webpage in a new tab. It does this every time I start up firefox. I have the default popup blocker on, my popup blocker and it still happens. It is quite annoying. Instead of the pointer finger it is the arrow and doesn't do what I'm trying to do.

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!

MyVerizon tells me that some of my lines are eligible for upgrade at a discounted price...but when I click on the link, it says "upgrade at full price." What's up?

The chat function helpers tell me that I am eligible, but that they can't help me. What what?

We are eager to help you upgrade your lines, DrVern!
When you dial #UPG or check online via My Verizon, are you able to see which phones are eligible to upgrade now with 2 year pricing?
If it is not clear, allow us to help. Please look for a direct message from me. We'll figure it out.
TamaraH_VZW
Follow us on Twitter @VZWSupport

When I click on a link in an emial, Firefox won't open up

I downloaded the new version of Firefox yesterday. Firefox is my default browser. Now when I click on a link in an email, Firefox will show up at the top of the screen "Firefox-File-Edit-View-etc" but it would open the Firefox page.

Start Firefox in [[Safe Mode]] to check if one of the extensions 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
* https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

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.

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.

After reboot firefox won't start. runs in task manager, but won't pop up. reset, safe mode and uninstall/re-install won't help. ok if no reboot.

win7 Pro. has been running firefox ok. but lately with 25 and now 26, the firefox won't start. I can see firefox is running in task manager. but it just won't pop up.
if I download it again and install it, it will run, but every time I reboot the system, it just won't run again.
try: reset, safe mode, uninstall & reinstall, new/clean profile, none of those work.

There may be a corrupted file on Firefox. 
Please attempt to perform a clean reinstall. [https://support.mozilla.org/en-US/kb/forum-response-clean-reinstall (More Details)] This is different than a regular uninstall.
If a clean reinstall does not fix the issue, please try starting your operating system in safe mode. 
To do so, please do the following:
#Ensure that your computer is shut down completely
#Press the power button
#Tap the <code>F8</code> key repeatedly before the Windows logo and startup screen is displayed
#Select Safe Mode With Networking for the advanced startup options list
Please report back with the results of both solutions.

I just upgraded to Firefox 3.6.13 this morning and now, when I click on a link in an email or webpage, it won't open Firefox. How can I get this option restored in Firefox so I don't have to copy and paste the link?

I just upgraded to Firefox 3.6.13 this morning and now, when I click on a link in an email or webpage, it won't open Firefox. How can I get this option restored in Firefox so I don't have to copy and paste the link?

See this lnk for a fix, it worked for me!
http://www.pcworld.com/article/200103/fix_outlook_general_failure_error_for_email_links.html

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

Flash Plug in is crashing after recent upgrade. I tried uninstalling, and reinstalling, still crashing. Firefox and Plug-in are current. What else can I do?

Flash Plug in is crashing after recent upgrade. I tried uninstalling, and reinstalling, still crashing. Firefox and Plug-in are current. What else can I do?

What I suggest you do here is to use Adobe's uninstaller tool to uninstall Flash first of all: http://kb2.adobe.com/cps/141/tn_14157.html
Then reboot, go to http://get.adobe.com/flashplayer/ and reinstall it.
I notice too that you have an outdated version of Shockwave For Director. You can update that via http://get.adobe.com/shockwave/

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.

After recent upgrade, Firefox won't start. Just flickers once when I click on a link or on its icon.

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