Why will Firefox not start on my windows laptop but it says it is open in background

since last update, firefox will not start even after repeated attempts. It is apparently open as i cannot delete it from the laptop untill I restart laptop.
I am running Windows 7 and i run Thunderbird successfully on my machine. I am forced to use IE to get onto the internet.

Does Firefox not start in Safe Mode?
* Click the Windows logo orb on the taskbar to bring up the Start Menu.
* In the search box, type firefox.exe -safe-mode and press Enter.
* If the little Firefox Safe Mode window pops up, click the Start in Safe Mode button.
* For more details, see [[Troubleshoot Firefox issues using Safe Mode]]
If Firefox doesn't start in Safe Mode, does the profile manager start? If yes, create a new profile and try starting Firefox in that profile.
[[Use the Profile Manager to create and remove Firefox profiles]]

Similar Messages

  • Why will firefox not start on my laptop? can't uninstall or open the profile manager either. it simply does not run. it used to work fine until i had to restore my system.

    had firefox 4.0 & have been a user of firefox for a few years now. never had any problems. had to do a system restore after my computer detected a virus of some sort & i couldn't do anything. the virus kept popping up a bogus add for me to buy an antivirus program. had to restart laptop in safemode to initiate the restore. ever since then firefox has not opened. can't even uninstall it or open the profile manager. anything that has to do with firefox will simply not run/open at all. i'm stumped.

    System restore can cause problems as well as solve them, it has probably completely mucked up your Firefox installation.
    Try deleting your Firefox installation directory, the default location on 32 bit Windows is C:\Program Files\Mozilla Firefox\
    Now re-install Firefox, it should pick up your current profile folder so you should not lose your bookmarks, passwords etc.

  • Why will download not start ?

    I went for this offer : Photoshop CC+Lightroom för $9.95 Payed but when clicking on "Download" nothing happens ! Why ?

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  • Why will iTunes not start after installing latest updates on a windows computer?

    I got the usual notification that an update for iTunes on a windows 7 computer was available and told it to install
    It went through the motions and seemed to install,. but when I tried to open iTunes on completion I got the message below.
    I subsequently removed iTunes and reinstalled after manually removing various iTunes folders, then reinstalled iTunes with the same result of the error message so I removed iTunes again and installed an older version of iTunes which worked fine until yesterday I was notified of an update for the iCloud, which I installed and am back at square one with the same error message.
    I have tried to send an e-mail to Apple but they make it virtually impossible, so I would appreciate any advice anyone can give. I cannot be bothered with all this mucking avbout every time there is an upgrade
    Thanks, Mactoshb

    Hi, I carried out the advice and after reloading, Itunes is starting OK but I could not delete most of the files and folders mentione,d constantly getting the message that they were open in some unspecified program and to close it to continue, problem was I had no idea what the program was that they were open in.
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    Question, am I going to get this cobblers every time Apple offer an upgrade?????
    Anyway thanks for your help and hopefully this posting will help others, as I doubt I am unique and others will have the same problem, Time perhaps Apple sorted it out
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  • Why does firefox not start? I have to go to the task manager and stop the process before I can use it

    Sometimes firefox won't start unless I go into the taskmanager and remove it. then it will start. But if I go out of F/F and want to re-start it. usually it re-starts but if I want to open E-mail in Msn, It won't happen.

    https://support.mozilla.com/en-US/kb/Firefox+hangs#Hang_at_exit

  • Why is firefox not fully closing in Windows 7 64 bit on my I5 notebook?

    Most of the time when I close firefox and then wait a bit then try to pull it up it says that firefox is already running. So I have to go to task manager and force a close. I have an Acer Aspire 5741G, 4 gigs of DDR3 ram, the I5-430M Processor. I just got the notebook 2 months ago and have updated Windows 7, Firefox, and made sure that the laptop drivers are all updated, Java, flash too. The funny thing is that sometimes it does shut down all the way, but most of the time it doesn't.
    Thanks,
    John

    https://support.mozilla.com/en-US/kb/Firefox%20hangs <br />See '''hang-at-exit'''

  • Why does Firefox not allow me to go to Facebook, consistently says "untrusted connection"??

    I have read through all of the responses to this exact questions posed by other users and nothing is working. What is the most frustrating is that this is not a constant issue. One minute I will be logged onto Facebook and when I try to visit a friends page or post something it will freeze, then the "untrusted connection" comes up. Or it will be working fine for a couple hours and I will log off of Facebook, when I come back a few hours later, or even a few minutes later I get the "untrusted connection" warning again. This has happened more now that Firefox has been updated and it is also happening to my roommate. She will be logged onto Facebook and I will try and get the warning, or vice versa. We are in the same room on separate computers. This problem does not occur on Google Chrome or Internet Explorer. This is an issue with Firefox, not my computers. We have four computers (2 Desktops, 2 Laptops) in our home, my boyfriend works in IT. We have done everything suggested by the people here and nothing works. I would understand if it was happening to one computer constantly and you tried to tell me it was my computer, but that is not the case. This happens with all four computers at different times. How can one person be logged on to Facebook and another isn't, then an hour later it will work on the latter computer and not the one it was working on previously. This is very frustrating. I love using Firefox over Internet Explorer and Google Chrome, I trust it more. But this is getting ridiculous. It has been happening for a long time, it just got worse with the update. Please help. It happens with Google and other popular sites as well.

    This is what it says, every time for me
    ''''''''This Connection is Untrusted''''''''
    You have asked Firefox to connect securely to www.facebook.com, but we can't confirm that your connection is secure.
    Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.
    What Should I Do?
    If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.
    ''''''Technical Details''''''
    www.facebook.com uses an invalid security certificate. The certificate is only valid for the following names: *.akamaihd.net, *.akamaihd-staging.net, a248.e.akamai.net (Error code: ssl_error_bad_cert_domain)

  • Why will FireFox not work on my system? (Windows 7) Help.

    This is the error message I receive when attempting to open FireFox
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    I do not like using any of the "Brand-X" browsers and I wish to have FireFox working again. My operating system is Windows 7.
    Please help. I do not know what to do.
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    Mark S. Pannill

    Could you try starting Firefox in the Profile Manager and create a new profile? Here are the steps:
    Start up in the Profile Manager using Start > search box (or Run):
    firefox.exe -P
    This should display a dialog. Normally, at least one existing profile is listed, but it sounds as though yours will be empty.
    Click the Create Profile button and choose any name you like for the profile. Skip the option to customize the folder location and save your new profile. Then select it in the box and start Firefox in that new profile.
    Does it run?

  • Why will Firefox not open Windows Live when Internet Explorer will?

    As above

    Hello,
    '''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
    ''(If you're not using it, switch to the Default theme.)''
    * On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
    * On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
    * On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
    * Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
    [[Image:FirefoxSafeMode|width=520]]
    ''Once you get the pop-up, just select "'Start in Safe Mode"''
    [[Image:Safe Mode Fx 15 - Win]]
    '''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
    ''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
    ''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
    Thank you.

  • Why will Firefox not download on my computer?

    I have Windows, and have clicked the Firefox download button SEVERAL times....then I will click Run. It loads its 60 second thing and then nothing happens after that. I have gone to the support forums and tried all the other websites (ninite etc.) and suggestions for that and nothing works. Please help!

    Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
    '''Note:''' You might want to print these steps or view them in another browser.
    #Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
    #After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
    #Delete the Firefox installation folder, which is located in one of these locations, by default:
    #*'''Windows:'''
    #**C:\Program Files\Mozilla Firefox
    #**C:\Program Files (x86)\Mozilla Firefox
    #*'''Mac:''' Delete Firefox from the Applications folder.
    #*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
    #Now, go ahead and reinstall Firefox:
    ##Double-click the downloaded installation file and go through the steps of the installation wizard.
    ##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
    Please report back to see if this helped you!

  • Why will itunes not install on my windows 8.1 machines

    I've tried 4 times to install iTunes on a new Sony windows 8.1 machine but it keeps telling me that the program is incompatible.  I have been using iTunes for years and had it on my old machine running Win 7.  With win 8.1 I keep getting error msgs that the program is incompatible.  Once it did install but when I tried to use it the first time I got an error that the program was shutting down and that windows would look for a solution.
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    Thanks,
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    I'm going through the threads to find a solution to my 8.1 problem as well but while I am here I will share what I have come across in the forums:
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  • Why will firefox not allow me to change the home page

    I am running firefox on vista laptop and since one of the upgrades of firefox I have now a automatic homepage of http://www.searchqu.com/406. I have tried to change it several times to various pages and it does not hold the address, not even a blank one. This happens even if I only close the browser for a split second. Can I please get some advise on this matter.
    Many Thanks
    Simon Donnelly

    Type '''about:config''' in the Location (address) bar and press the "Enter" key. When you see a warning, click '''I'll be careful, I promise!''' button.
    * Preferences that have been modified are shown as '''bold (user set)'''.
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    -> In the '''Filter bar''', type '''searchqu'''
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    * '''Reset''' all '''searchqu''' related Preferences to their Default values (right-click a preference and click '''Reset''')
    -> Close the '''about:config''' tab and then Restart Firefox.
    Check and tell if its working.

  • Why will Firefox not open links on website I create with Dreamweaver?

    When i create a link to another web page, I cannot open the link in Firefox. I can in IE, but not in Firefox. I am working in Dreamweaver CS6

    Such code should be working.
    Do you see the correct URL popping up at the bottom of the screen when you hover such a link.
    If that isn't the case then right-click the link and use Inspect Element to check what Firefox sees at that position.
    *https://developer.mozilla.org/en/Tools/Page_Inspector

  • Why will Firefox NOT play videos, yet IE will??

    If I can't find help here for Firefox, where can I?

    When you load a web page with a clip / video / audio, what happens?
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    Type '''about:addons'''<Enter> in the address bar to open your Add-ons Manager.
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    BTW; At the top right is a link to check your plugins.

  • Verizon Media Manager will not start automatically with Windows, even though it is set to do so.

    Verizon Media Manager will not start automatically with Windows, even though it is set to do so.  This started with the latest update.  I see that the desktop icon for Media Manager now has a security shield on it, and it requires UAC confirmation when you start it, which I don't remember the old version doing.
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    I don't remember what the previous version was, but this one is 9.4.86.  It asked me if I wanted to update it a few days ago, and I said yes.
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    Go to Solution.

    Try setting the startup option to off and then to on again. It looks to be pointing to a wrong location.
    Attached is a partial screen shot of my msconfig setting.
    Attachments:
    media manager startup cmd line.jpg ‏18 KB

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