I can't open firefox the running but not responding window opens and says to close the existing window. I can't do that shutting down the computer doesn't do anything to help. I've done all the suggestions here. I've uninstalled and reinstalled firefox

Firefox will not open. I get the firefox is already running but not responding window... I have tried rebooting with no help. I have tried to end the process via cntrl+shift+esc and nothing firefox is listed to end. I have tried find the app data via the run icon in the start up window, I have no run icon on this system (Acer with windows vista(?)
== This happened ==
Every time Firefox opened
== The computer was hard shut down and did a improper shut down scan when it was restarted ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; FunWebProducts; GTB6.5; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729)

I am having a similar problem. Running Xp.
Latest revision of firefox.
After using firefox for a while if I exit, parent.lock is locked and i have to reboot to reload firefox.
I have killed all firefox applications from task manager (usually there are none). and I have tried 3 different "file unlock" programs including unlocker to no avail.
I also recently installed a program that shows -all- open files, and parent.lock is not listed, and thus not closable/unlockable from there.

Similar Messages

  • What does it mean when the message says " Firefox is running but not responding, in order to use Firfox, close open progams or restart your computer

    I can not find Mozilla or Firefox on the taskbar as open programs so I can not close it? . I end up re starting mu computer .?? What am i doing wrong?
    thanks for your help

    It is often possible to find and kill processes even if not on a taskbar. You will be looking for firefox.exe . I use Windows XP pro and could use the Taskkill command or TaskManager, other OS will have similar facilities .
    See
    *[http://technet.microsoft.com/en-us/library/bb491009.aspx MS link]
    *[http://en.wikipedia.org/wiki/Kill_%28command%29 Wiki kill]
    Another [https://support.mozilla.com/en-US/questions/770309 thread] suggests deleting profile.ini may solve similar problems, in some cases (but be careful; you are likely to loose information)

  • Firefox is already running, but not responding to open a new window

    I closed the only opened Firefox process that was running. Then clicked the Fox to start Firefox again. I received a message: Firefox is already running, but not responding, to open a new window. You must close the existing Firefox process, or restart your system. This is a stupid message since there is no Firefox in process.
    == This happened ==
    Not sure how often

    Hello Lara.
    Hopefully this support article is what you need:
    http://support.mozilla.com/en-US/kb/Firefox+hangs#Hang_at_exit

  • I have the latest version but I am continually told that Firefox is running but not responding and that I need to close Firefox or restart my computer to clear the problem. Why is this happening?

    I have the latest version but I am continually told that Firefox is running but not responding and that I need to close Firefox or restart my computer to clear the problem. Why is this happening?

    See "Hang at exit":
    *http://kb.mozillazine.org/Firefox_hangs
    *https://support.mozilla.com/kb/Firefox+hangs
    See also:
    * http://kb.mozillazine.org/Profile_in_use
    * https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

  • After stopping FF when I restart it , I get a pop up displaying Firefox already running but not responding. Please Help?

    After stopping FF when I restart it , I get a pop up displaying Firefox already running but not responding. Please Help?

    There are several possible causes, see [[Firefox is already running but is not responding]].

  • Firefox is not opening and saying " firefox is alredy running but not responding ,to open a new window you must close the existing fireox process" even though there is no other window open

    this has been happening since i updated i have windows 7 but firefox beta used to work just 3 days ago i had mcafee site advisor but i deleted it its not working every time i click on the icon it displays the above message

    I discovered that when the "Firefox is already running . . . ." message pops up I can fix it by doing the following [note: I get the same message for the Thunderbird e-mail program too] : 1. I open 'TASK MANAGER" and click on the "Processes" tab. 2. Next I scroll down until I see Firefox.exe *32 in the leftmost column (or Thunderbird. exe *32 if the message came up there), highlight that line by clicking on it and then click on the "end process" button on the right side on the bottom. 4. A pop-up window will come up but ignore its message and click on the "end process" button in the pop-up window. The program should then start the next time you click on the icon..
    While that saves the need to restart your PC to fix the problem, I have yet to find any information as to the reasons for those two processes to show up in the first place. I'm running the 64 bit Win 7 Professional and do not know if that has something to do with those two processes running from time to time or not. The message comes up often but not all the time and I haven't been able to pinpoint any action on my part where the message comes up if I do '''X '''or the message never comes up when I do '''Y''' before closing Firefox or Thunderbird.

  • When closing FF and then try to go back on, a msg. says FF is already running, but not responding, to open new window you must first close the existing window or restart system. How do i close without restarting?

    'This happens after a FF session is ended and am back on my desktop screen. If I then try to go back online a message says that FF is already running but is not responding. To open a new session you must first close the existing process or restart your system. I have to restart the computer to before it allows me to go back on. How can I close the session and then open a new one without rebooting???

    Hey GreenViking,
    You can kill the process manually by right clicking in the task bar (next to the time and date) and opening the task manager.
    [https://support.mozilla.com/en-US/kb/Firefox%20hangs#w_firefox-hangs-when-you-quit-it This article] has some information about Firefox hanging when you try to close it.
    Hope that helps!

  • Get message firefox already running but not responding when trying to launch..tells me to close firefox wondow and try again (no ffox window is open)

    When trying to launch Firefox I get the following 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."
    This is not the first time and I am tired of having to restart my computer. BTW I have Firefox as my default browser, but had to use IE to get to this support site!
    In answer to the next question...every time I TRY to open Firefox.

    Simple fix for you I think--it works for me.
    1. Open your TASK MANAGER (rt click on your taskbar)
    2. Go to PROCESSES
    3. Scroll down until you see "firefox.exe"(or anything with the word Firefox in it)
    4. Click(highlight) the "firefox.exe"
    5. At the bottom right side,click "End Process"
    6. Close the Task Manager and do whatever you were attempting to do.
    Cheers
    Bilk 24

  • Why doesn't Firefox stop running when I shut it off? Every time I shut it off and return later, I get a message that Firefox is running, but not responding and that I have to restart my computer to access Firefox.

    When I shut down Firefox I get all the shutdown messages, so I assume it has shut down as it should. But if I go back to my PC later (within an hour or so) and click on Firefox to bring it up, I get the "runningbutnotresponding" message and the promt to restart my PC.

    See - [https://support.mozilla.com/en-US/kb/Firefox%20hangs#w_firefox-hangs-when-you-quit-it Firefox hangs when you close it]

  • I open firefox it keeps saying"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 tried restart my computer...but it's still keep saying that..pls help me..

    As I stated above, I have to constantly restart my computer because I get a message stating firefox is already running.

    Do you see a firefox.exe in the Task manager if you look there right after you get this error message?
    You do not have to restart the computer, just kill that process.
    This situation may occur if Firefox was not closed correctly or crashed.

  • "Close Firefox - Error Message -. Firefox already running, but not responding -.." A real pain - Firefox worked much better before all the updates!! How do I fix this?

    This pop-up appears anytime I attempt to close Firefox and immediately open another browser, etc.
    Suspect it is add-ons related. Never had the problem with "older" version of Firefox.
    It is a real nuisance, almost makes me go to Explorer!

    Try to wait a bit longer (up to 1 minute or maybe more) as it can take some time for Firefox to close completely.
    See "Hang at exit":
    *http://kb.mozillazine.org/Firefox_hangs
    *https://support.mozilla.com/kb/Firefox+hangs

  • Wont start. says is running but not responding. open taskmanager but no firefos under processes. restart computer and get same.

    when i click the firefox icon to open firefox it pops up a box that says that firefox is running but not responding. i open taskmager to close the firefox process but there is no firefox process listed. i restart my computer and get the same result. firefox appears to still be running but not responding even after a restart. i even tried a cold boot ad got the same results. performed a full virus scan and excep for some tracking cookies it came up negative. i deleated the firefox kernal and downloaded a new copy and installed it. got same problem.

    See "Hang at exit":
    * http://kb.mozillazine.org/Firefox_hangs
    * https://support.mozilla.com/kb/Firefox+hangs

  • V6.01, Windows 7, click on icon, "firefox is already running but not responding" Task manager doesn't know about it. I can't quit it or get it to load. Brand new install. What to do?

    Brand new Lenovo computer, Windows 7 Home. New install of Firefox 6.0.1, set as default browser, don't launch when I click done. Icon appears in tray. I click the icon, and a message says "firefox is running but not responding. To open a new window, you must first close the existing process, or reboot". It's not obviously running. I can't find a way to make it quit. Task manager doesn't list it as a current application. Uninstall using the control panel uninstall function and then reinstalling gives the same message. Rebooting doesn't fix the problem and gives the same message. Firefox had been working until I tried to update my bookmarks.

    No can do. I can delete the current profile and install Firefox, which should create a new blank profile. The message still says "Firefox is already running." I can place my old profile in the proper folder, and Firefox will still be already running. I can't actually use Firefox, because even though the message says it is running, there is nothing on the screen I can access.
    After uninstalling Firefox, deleting the two items left in the Programs folder, and deleting the profile again, it still didn't work. I then got frisky and from the Roaming folder I deleted the Mozilla folder which contains the Firefox folder which contains the now empty Profiles folder. That worked, and a new set of folders with a new blank profile were created. So apparently it was the empty folders that never got deleted that were causing the issue.
    Thanks for your suggestion. It got me thinking.

  • Firefox is already running but not responding,No process in task manager,Restart and uninstall not useful.Profile manager error

    So one day when I opened my mozilla firefox Ive got the "Firefox is already running but not responding.To open a new window,you must first close the existing firefox process,or restart your system."
    So I checked my task manager but there is no process,I then checked hours in the internet to find a solution.Yes,I also checked for solutions in this site.Then,I try uninstalling and restarting,it also didn't work,Next I also tried downloading profilemanager and tried to run it but as unlucky as I can be,it also didn't work. Please help :(

    The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
    Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
    To Reset Firefox do the following:
    #Go to Firefox > Help > Troubleshooting Information.
    #Click the "Reset Firefox" button.
    #Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
    #Firefox will open with all factory defaults applied.
    Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
    Did this fix your problems? Please report back to us!

  • Firefox stops loading new pages, displays "Loading". When I close it it goes. But when I restart it gives me "Another version is running, but not responding. This requires a power cycle reboot.

    Version 3.6.18. Running on Windows XP Pro. (kept current)
    This happens on a variety of pages. I get the little Loading thing in the tab, with the circle moving. So I X out (to exit Firefox). When I go to restart I get the error message "Another version of FireFox is running, but not responding". I give Windows the "three finger salute", and go to Task Manager, and do not see any reference to Firefox, and the Performance, and Processes seem OK. But it never seems to close the earlier Firefox, and won't let me open a new one. Any suggestions? Super Thanks for your help!

    Hi Andis.
    First of all, this is completely normal behavior, although it's a bit irritating, I know. What happens is that when you close Firefox, despite the window disappearing right there and then, Firefox keeps running for a little bit until the whole closing procedure is completed. This can take a fraction of a second on fast computers, or can take a few seconds on slow computers or when Firefox is storing a large session (if you save your tabs). All you have to do is wait a bit until Firefox closes, and then open it again.
    To see if it's still running, you can press CTRL+SHIFT+ESC and then, under the Processes tab, you can see if firefox.exe is still there. If it's taking an unusual amount of time to close (which happens very rarely, and only if the browser freezes on exit), you can force the application to terminate from this application (task manager).
    Firefox 4.0 will reduce by 97% the time it takes firefox.exe to close, so this problem will be basically erased for Firefox's next version.
    Until then, I can recommend you this extension, which helps you restart your browser more easily and without bothering about closing times:
    https://addons.mozilla.org/en-US/firefox/addon/3559/
    Hopefully this will help.

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