Can't open firefox-- says "already open" but it is not open

says also only one firefox can be opened at a time. Currently cannot get firefox open at all.

Using task manager to kill firefox running in the background works but the question is, why? It happens to me on a daily basis and is the number 1 reason why I have switched over to Chrome

Similar Messages

  • Error message: can't install update, firefox is already running, but it is not

    second request
    an auto update failed a few days ago and now everytime I open FF I get an error message that says can't install update, firefox is already running, but it is not!
    the parent.lock file is not open when FF is closed
    in addition to this message, a box opens asking looking for a file
    Help!

    hi
    I had the same problem (update failed for normal user, update worked for administrator, but then normal user still got asked about installing the update even though it was already done).
    Following the advice on http://kb.mozillazine.org/Software_update#Software_Update_not_working_properly worked for me, in particular to remove the update-related xml files.
    good luck
    kris

  • Flash says already installed but it is not

    As stated.  I was having problems viewing some videos and figured it may be a problem with flash.  I had the 32bit version but I am running windows 7 64bit.  So I uninstalled adobe flash from the computer using the control panel, then rebooted.  Now When I attempt to download the Flash 64bit from the website (using IE 9, 64bit) the program downloads, and once it begins to say installing it stops and I receive a message saying A newer version of adobe flash is already installed.  But it is not installed and does not exist anywhere I can find on my computer.
    thanks for any help

    =O====== M/11.3.300.268 2012-08-10+00-11-59.042 ========
    0000 [I] 00000010 "C:\Users\Tina\AppData\Local\Temp\install_flash_player_ax.exe" -install -iv 8 -au 0
    0001 [W] 00001036 Software\Macromedia\FlashPlayer\SafeVersions/11.0 2
    0002 [W] 00001036 Software\Macromedia\FlashPlayerActiveX/PlayerPath 2
    0003 [I] 00000020 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0004 [I] 00000011 1
    0005 [W] 00001037 SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Adobe Flash Player ActiveX/ 2
    0006 [I] 00000013 C:\Windows\SysWOW64\Macromed\Flash\Flash32_11_3_300_268.ocx
    0007 [I] 00000015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_ActiveX.exe
    0008 [I] 00000016 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_ActiveX.dll
    0009 [I] 00000019 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0010 [I] 00000021 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    0011 [I] 00000012
    =X====== M/11.3.300.268 2012-08-10+00-12-02.973 ========
    =O====== M/11.3.300.268 2012-08-10+00-16-09.999 ========
    0000 [I] 00000010 "C:\Users\Tina\AppData\Local\Temp\install_flash_player.exe" -install -iv 8 -au 0
    0001 [W] 00001036 Software\Macromedia\FlashPlayerPlugin/Version 2
    0002 [W] 00001036 Software\Macromedia\FlashPlayerPlugin/PlayerPath 2
    0003 [I] 00000020 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0004 [I] 00000011 1
    0005 [W] 00001037 SOFTWARE\MozillaPlugins\@adobe.com/FlashPlayer/ 2
    0006 [W] 00001037 SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Adobe Flash Player Plugin/ 2
    0007 [W] 00001036 Software\Mozilla\Firefox\extensions/Plugins 2
    0008 [W] 00001036 Software\Mozilla\Mozilla Firefox\extensions/Plugins 2
    0009 [W] 00001036 Software\Opera Software/Last CommandLine 2
    0010 [W] 00001036 Software\Opera Software/Last CommandLine 2
    0011 [W] 00001036 Software\Opera Software/Plugin Path 2
    0012 [W] 00001036 Software\Opera Software/Plugin Path 2
    0013 [I] 00000014 C:\Windows\SysWOW64\Macromed\Flash\NPSWF32_11_3_300_268.dll
    0014 [I] 00000015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_Plugin.exe
    0015 [I] 00000017 C:\Windows\SysWOW64\Macromed\Flash
    0016 [I] 00000019 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0017 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl 183
    0018 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerApp.exe 183
    0019 [I] 00000022 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_11_3_300_268.exe
    0020 [I] 00000021 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    0021 [W] 00001106
    0022 [W] 00001106
    0023 [W] 00001024 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe 183
    0024 [I] 00000012
    =X====== M/11.3.300.268 2012-08-10+00-16-14.604 ========
    2012-8-10+0-25-33.848 [error] 1226 1062
    =O====== M/11.3.300.270 2012-08-10+00-25-30.956 ========
    0000 [I] 00000010 FlashPlayerInstaller.exe -install -iv 9
    0001 [I] 00000020 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0002 [I] 00000011 1
    0003 [W] 00001015 C:\Windows\SysWOW64\Macromed\Flash\Flash32_11_3_300_268.ocx 5
    0004 [I] 00000018
    0005 [W] 00001015 C:\Windows\SysWOW64\Macromed\Flash\Flash32_11_3_300_268.ocx 5
    0006 [W] 00001015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_ActiveX.dll 5
    0007 [W] 00001015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_ActiveX.exe 5
    0008 [I] 00000013 C:\Windows\SysWOW64\Macromed\Flash\Flash32_11_3_300_270.ocx
    0009 [I] 00000015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_270_ActiveX.exe
    0010 [I] 00000016 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_270_ActiveX.dll
    0011 [I] 00000019 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0012 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl 183
    0013 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerApp.exe 183
    0014 [I] 00000021 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    0015 [W] 00001106
    0016 [W] 00001106
    0017 [W] 00001024 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe 183
    0018 [I] 00000012
    =X====== M/11.3.300.270 2012-08-10+00-25-35.800 ========
    =O====== M/11.3.300.268 2012-08-10+01-01-47.840 ========
    0000 [I] 00000010 "C:\Users\Tina\AppData\Local\Temp\install_flash_player.exe" -install -iv 8 -au 0
    0001 [I] 00000020 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0002 [I] 00000011 1
    0003 [W] 00001036 Software\Mozilla\Firefox\extensions/Plugins 2
    0004 [W] 00001036 Software\Mozilla\Mozilla Firefox\extensions/Plugins 2
    0005 [W] 00001036 Software\Opera Software/Last CommandLine 2
    0006 [W] 00001036 Software\Opera Software/Last CommandLine 2
    0007 [W] 00001036 Software\Opera Software/Plugin Path 2
    0008 [W] 00001036 Software\Opera Software/Plugin Path 2
    0009 [I] 00000014 C:\Windows\SysWOW64\Macromed\Flash\NPSWF32_11_3_300_268.dll
    0010 [I] 00000015 C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_11_3_300_268_Plugin.exe
    0011 [I] 00000017 C:\Windows\SysWOW64\Macromed\Flash
    0012 [I] 00000019 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
    0013 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl 183
    0014 [W] 00001024 C:\Windows\SysWOW64\FlashPlayerApp.exe 183
    0015 [I] 00000022 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_11_3_300_268.exe
    0016 [I] 00000021 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    0017 [W] 00001106
    0018 [W] 00001106
    0019 [W] 00001024 C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe 183
    0020 [I] 00000012
    =X====== M/11.3.300.268 2012-08-10+01-01-52.133 ========

  • Trying to start Firefox and it say already running,but it is not runnimg.

    The message I get back is firefox is running and must be shut down or retsart system. I have had the system down snd off for over twelve houses and get the same message.

    Mine says the same error message except it does not say it is not responding , just open , but it wont let me open , it just gives the message every time i TRY to open it
    This just started doing this today , but it has done it 3 times , i have also noticed that my mouse wont scroll sometimes , i will be on a webpage and its like the page is locked , but if i move the page by the slider on the right manually , then the mouse scroll works again , this also just started tonight , so i am guessing the 2 are related , and i get no other system errors , or anything i can find running in the background , when i do get it to allow me to open it again , the pages stop freezing , till the next time , then the next time i try to open Firefox , i get the error , so the mouse scroll freeze and the error must be related somehow

  • Frequently when I open Firefox it says Firefox is already running but is not responding. I have to go to the task manager, find Firefox and close the process before I can get firefox to load.

    Those are all the details I have

    There is an article about this problem see:
    * [[Firefox is already running but is not responding]]

  • When I attempt to open firefox an error message appears telling me that firefox is already running, but I can't find it running. How do I do so or in any case close the already running Firefox process?

    When I attempt to open Firefox instead of Firefox opening, an error message appears saying "Firefox is already running but isn't responding. To open another window please close the existing Firefox process or restart the system.", but I can't find that process of Firefox in order to kill it, and after restarting the system there is still the problem. I have found an emergency fix to at least get online, and that is to use"Firefox_Profile_Manager" in the start menu's "run" start menu, but the
    Firefox that then opens is that one doesn't carry over what I had in my bookmarks but starts bookmarks anew.

    Sounds like it is hanging when you exit and later try to restart Firefox.
    * How to stop the running Firefox process
    ** In Task Manager, does firefox.exe show in the '''<u>Processes</u>''' tab?
    ** See: http://kb.mozillazine.org/Kill_application
    **Windows 7 users: http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576
    * What may cause Firefox to hang at exit
    **Windows 7 Task Manager: http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576
    ** http://support.mozilla.com/en-US/kb/Firefox+hangs
    ** http://kb.mozillazine.org/Firefox_hangs
    ** https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
    * You may need to try Firefox Safe Mode
    ** You may need to use '''Safe Mode''' to locate the problem: ***See: http://kb.mozillazine.org/Safe_Mode
    ***Firefox 4 users, hold the Shift key while clicking the Firefox 4 desktop icon to enter Safe Mode.
    ***Firefox Safe Mode is a diagnostic mode that disables Extensions and some other features of Firefox.
    ****In Firefox 4, Safe Mode also disables Plugins and Hardware Acceleration.
    ****If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes '''<u>before</u>''' starting Safe Mode (In Firefox 4, Tools > Add-ons > Appearance). See: http://support.mozilla.com/en-US/kb/Using%20themes%20with%20Firefox#w_managing-themes-and-personas
    ****When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode".
    ****Test to see if the problem you are experiencing is corrected.
    *** If the problem does not occur in Safe-mode then disable all of your Extensions and Plug-ins and then try to find which is causing it
    ***#by enabling '''<u>one at a time</u>''' until the problem reappears.
    ***#You can also enable a few at a time (3-5), keeping track of what you just re-enabled to see if the problem re-occurs; this will help narrow down the possibilities if you have a large number of add-ons.
    ***#'''<u>You MUST close and restart Firefox after EACH change</u>''' via File > Restart Firefox (on Mac: Firefox > Quit).
    ***#You can use "Disable all add-ons" on the Safe Mode start window.
    **See the following for more information
    *** http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes
    *** http://support.mozilla.com/en-US/kb/Troubleshooting+plugins
    *** http://support.mozilla.com/en-US/kb/Basic+Troubleshooting
    <br />
    <br />
    '''You need to update the following:'''
    *Adobe Shockwave for Director Netscape plug-in, version 11.5
    *Adobe PDF Plug-In For Firefox and Netscape "9.3.2"
    *Shockwave Flash 10.2 r153
    *Next Generation Java Plug-in 1.6.0_17 for Mozilla browsers
    #'''''Check your plugin versions''''' on either of the following links':
    #*http://www.mozilla.com/en-US/plugincheck/
    #*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
    #*'''Note: plugin check page does not have information on all plugin versions'''
    #*There are plugin specific testing links available from this page:
    #**http://kb.mozillazine.org/Testing_plugins
    #'''Update Shockwave for Director'''
    #*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
    #*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
    #*When the download is complete, exit Firefox (File > Exit)
    #*locate and double-click in the installer you just downloaded, let the install complete.
    #*Restart Firefox and check your plugins again.
    #*'''<u>Download link and more information</u>''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
    #'''Update Adobe Reader (PDF plugin):'''
    #*From within your existing Adobe Reader ('''<u>if you have it already installed</u>'''):
    #**Open the Adobe Reader program from your Programs list
    #**Click Help > Check for Updates
    #**Follow the prompts for updating
    #**If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below
    #*Download complete installer ('''if you do <u>NOT</u> have Adobe Reader installed'''):
    #**SAVE the installer to your hard drive (save to your Desktop so that you can find it after the download). Exit/Close Firefox. Run the installer you just downloaded.
    #**Use either of the links below:
    #***https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox ''(click on "Installing and updating Adobe Reader")''
    #***''<u>Also see Download link</u>''': http://get.adobe.com/reader/otherversions/
    #*After the installation, start Firefox and check your version again.
    #'''Update the [[Managing the Flash plugin|Flash]] plugin''' to the latest version.
    #*Download and SAVE to your Desktop so you can find the installer later
    #*If you do not have the current version, click on the "Player Download Center" link on the "'''Download and information'''" or "'''Download Manual installers'''" below
    #*After download is complete, exit Firefox
    #*Click on the installer you just downloaded and install
    #**Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator"
    #*Start Firefox and check your version again or test the installation by going back to the download link below
    #*'''Download and information''': http://www.adobe.com/software/flash/about/
    #**Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE)
    #**Use IE to go to the above site to update the IE ActiveX
    #*'''Download Manual installers'''.
    #**http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller
    #**Note separate links for:
    #***Plugin for Firefox and most other browsers
    #***ActiveX for IE
    #'''Update the [[Java]] plugin''' to the latest version.
    #*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
    #**'''''Be sure to <u>un-check the Yahoo Toolbar</u> option during the install if you do not want it installed.
    #*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
    #* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
    #* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
    #*Java Test: http://www.java.com/en/download/help/testvm.xml

  • When I click to open firefox it says that "firefox is already running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system" and I've tried to shut down and restart my computer but it keeps

    when i click to open firefox it says that "firefox is already running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." and I've tried to shut down and restart my computer but it keeps showing the same message. I've even uninstalled Firefox and then reinstalled in the hopes that the problem would be solved but it this message is still popping up. What can I do to solve this problem?
    == This happened ==
    Just once or twice
    == I was on facebook trying to upload pictures yesterday. ==
    == User Agent ==
    Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; InfoPath.1)

    Do you have a profile lock file in your profile folder? If so, delete it and see if TB runs properly:
    http://kb.mozillazine.org/Profile_in_use#Remove_the_profile_lock_file

  • I close firefox and try to open it again later, it WON'T and says, "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." Firefox isn't running .

    After I turn on my laptop and click on firefox it works fine and it opens THE FIRST TIME. So can you help? i DON'T WANT TO RESTaRT my computer everytime and sometimes have to clsoe firefox b/c I'm typing paper and computer goes slow.

    Sounds like a "hang at exit" problem. There are several possible causes for that error. See:
    * How to stop the running Firefox process
    ** In Task Manager, does firefox.exe show in the '''<u>Processes</u>''' tab?
    ** See: http://kb.mozillazine.org/Kill_application
    * What may cause Firefox to hang at exit
    ** http://support.mozilla.com/en-US/kb/Firefox+hangs (see "Hang at exit" section)
    ** http://kb.mozillazine.org/Firefox_hangs
    ** https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
    * You may need to try Firefox Safe Mode
    ** You may need to use '''Safe Mode''' to locate the problem: http://support.mozilla.com/en-US/kb/Safe+Mode
    **Firefox Safe Mode is a diagnostic mode that disables Extensions and some other features of Firefox. If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes '''<u>before</u>''' starting Safe Mode. When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode". Test to see if the problem you are experiencing is corrected.
    ** If the problem does not occur in Safe-mode then disable all of your Extensions and Plug-ins and then try to find which is causing it by enabling '''<u>one at a time</u>''' until the problem reappears. '''<u>You MUST close and restart Firefox after EACH change</u>''' via File > Restart Firefox (on Mac: Firefox > Quit). You can use "Disable all add-ons" on the Safe mode start window.
    ** See the following for more information
    *** http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes
    *** http://support.mozilla.com/en-US/kb/Troubleshooting+plugins
    *** http://support.mozilla.com/en-US/kb/Basic+Troubleshooting

  • I deleted the profile and firefox4 and then downloaded firefox4 again. But when i click firefox it says Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process,or restart your system.HELP!

    somehow i couldn't get rid of one website called www.searchqu.com/405 set as my homepage... I tried all solutions given to change the homepage but whenever i restarted firefox that homepage used to come automatically.. So, I deleted the profile (even from recycle bin!!) and deleted the firefox and downloaded it again hoping to get my problems fixed (which didn't happen!) because i'm getting dialog box saying- Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

    You don't say which operating system you have installed?
    Assuming it's Windows, right click a blank part of the Windows Taskbar and go to Task Manager. Then click the ''Processes ''tab, find '''firefox.exe''' and then right click it and choose '''End Process'''.

  • Firefox was working just fine but the last few days it won't let me open it because it says it's already running but it's not how do I close it to open it?

    This is the message I get whenever I click on the Foxfire icon on my computer. Even when it has been down for hours:"Foxfire is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."

    See also https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

  • My firefox beta 4 freez all the time when i close it I can not open it agian tell me firefox is alraedy open. massage is Firefox is already running, but is not responding

    my firefox 4 beta always freez when i close it and try to open this massage show Firefox is already running, but is not responding

    Delete the processes. Press: CTRL, ALT, DEL at the same time. It opens your menu asking you different selections. Just click open task manager. Click the Processes tab and press F on ur keyboard. It goes directly to Firefox, you may also have to press M to go to Mozilla Firefox, depending on how it's worded on your programs. Click end process. Then just re-open. That is how you fix it that time. Use the links on the last post about hanging to fix Firefox and learn more about hanging.

  • When I try to accessFirefox, I get a message that says Firefox is already running ,but is not responding.To open a new window,you must first close the

    I get this message when I click the icon on the desktop or open a webpage from O.E.

    Make sure that you do not start Firefox with the -no-remote switch appended to the command line.
    * http://kb.mozillazine.org/Opening_a_new_instance_of_Firefox_with_another_profile
    See also:
    * http://kb.mozillazine.org/Profile_in_use
    * [[Firefox is already running but is not responding]]

  • When I try to access Firefox I get this message: "Firefox is already running, but is not responding. To open a new windwo, you must first close the existing Firefox process, or restart your computer."

    When I click on Firefox I get a window that says: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your computer." I can't see where anything is running on firefox. I restarted the comuter and I shut down the computer. I also ran a full scan of the computer.

    Sorry I am a PC user but have you seen
    * [[Firefox is already running but is not responding]]
    Firefox will be hanging for some reason. The quick solutions to kill the process and try again. The next step is to try to see if it will start and exit normally a couple of times, if so the problem is solved. If not the reason needs further investigation.
    See [[firefox hangs]]
    An immediate likely culprit after repeated problems are the duplicate session restore files, as discussed in the above KB article.

  • It always says:Firefox is already running but not responding; what can i do to fix this problem; it has only started after having downloaded the latest verion.

    I downloaded the latest version of firefox and the problem has started; it aways says: "Firefox is already running, but not responding. To open a new window you must first close the existing Firefox process or restart your system; I have to do this about 3 times for the internet to come on again; what can I do, short of calling a technician??

    Please read this article: [[Firefox is already running but is not responding]]

  • When I open Firefox I get the message "Firefox is already running but not responding . . .

    I am using Firefox 3.6.9 with Windows XP SP3. Almost every time I try to open Firefox I get the message:
    "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."
    I then must open Task Manager and find Firefox and stop the process.
    I run Firefox on 4 Windows machines and this is the only machine that I have this problem on.
    I have looked at the Mozilla Firefox KB and have tried to check on the items that could be causing the problem. I have update my Java in Firefox. I have un-installed Firefox leaving the Bookmark preferences, etc. on my machine, ran CCleaner to clean the Registry of remaining Firefox items and then re-installed Firefox - I still have the problem.
    I have installed Google Chrome to fix this problem but now I find that several of the websites and companies I do business with are not compatible with Chrome.
    How can I fix this problem? Why am I only having this issue on 1 of my 4 Windows machines?
    Thanks!
    Bill Artman

    For possible causes see [[Firefox is already running but is not responding]].

  • On switching on, a message says 'Firefox is already running but not responding...........' then tells me to close it and restart but how can I close it when the page isn't yet displayed?

    When I switch on my computer I get the desktop then I try to click on Mozilla Firefox but get the message, 'Firefox is already running but not responding. To open a new window you must first close the existing Firefox process or resart your system.' I looked up how to close but I need to click on 'file' then 'exit'. How can I do that when I can't see the page yet? IE is working fine.

    See also [[Firefox is already running but is not responding]]

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