When I close firefox and try to open it later, it won`t open, say it is all ready running but won`t open browser

I close browser , try to open it later and a box comes up an says it is already running and will not open until I reboot,after reboot the same thing happens. I just rembere that prior to this happening some type of undate from firefox came up and ask me to choose which extension or plugins I want and I checked them all , even the ones that where not compatible , maybe this will help but I can`t get the browser up to uncheck them

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

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Sometimes when I close Firefox and try to open it in few moments it shows me 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." However, I haven't o

Sometimes when I close Firefox and try to open it in few moments it shows me 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." However, I haven't opened any additional Firefox related programs, and previous Firefox is closed. First I though it is because of my computer, but then I discovered that other people have the same problem as well
== This happened ==
A few times a week
== some 2 month ago ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; InfoPath.2; .NET CLR 3.0.30729)

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.

When i close firefox and want to use it later i get a warning saying cannot open firefox close it first this keeps happening all the time any ideas to solve this problem? i have 2 mchines one on xp and one on windows 7

i have 2 pcs one with xp and the other with windows 7 heres the problem
when i close firefox and say go back to it say in 10 mins i get a error message saying to close firefox before opening!!! but firefox window is closed but the processes still say its running in task manager so to correct this i have to end process on firefox. this seems to be happening now every time in the last few days i have upgraded firefox to the latest version. any ideas on how to solve this problem.

see if this helps you : [https://support.mozilla.org/en-US/kb/Firefox%20is%20already%20running%20but%20is%20not%20responding Firefox is already running but is not responding]
thank you
Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Firefox is freezing. When I close Firefox, and try to re-start it, it will not open. I need to access Task Manager, where I find Firefox still running. I close Firefox in Task Manager & can re-start Firefox.

Firefox is freezing in the middle of a browsing session. When I close Firefox, and try to re-start it, it will not open. I need to access Task Manager, where I find Firefox to still be running. Once I close Firefox in Task Manager, I can re-start Firefox. This can happen several times in the space of a few hours? I'm running Vista Home premium with Firefox 3.6.16, and this problem has only started in the last 4 weeks. Can Anyone Help? Core 2 Duo E7300 with 4GB RAM.

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 '''Processes''' 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 '''before''' 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 '''one at a time''' 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.
***#'''You MUST close and restart Firefox after EACH change''' 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
 
 
'''You need to update the following:'''
*Adobe Shockwave for Director Netscape plug-in, version 11.0
*Shockwave Flash 10.2 r152
#'''''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.
#*'''Download link and more information''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
#'''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

When I close Firefox and try to restart it, my system thinks it's still running, and I must reboot in order to start Firefox 3.6.11.

When I close Firefox and try to restart it, my system thinks it's still running, and I must reboot in order to start Firefox 3.6.11. I'm running Windows Vista and this is the only program that has this problem. Another symptom is the program does not show up in my recently used programs list nor is it in the task list once I've closed it, though Windows will not open it because it thinks it's still running.

I am also using Windows Vista 64 bit and have the same problem..what i do is instead of rebooting the computer press CTRL ALT and DELETE key. start the task manager and go to the Process tab and look for firefox .exe click on it and hit the end process tab. close that window and firefox should run... and this problem started when i upgraded to firefox 3.6.12
If anyone has a permanent solution please post.

I can open iTunes at first, but when I close it and try to launch it again, it won't open

Hi, I'm using a Windows 7 64-bit. When I first startup my computer, I can launch iTunes perfectly fine. But when I close iTunes and try to open it again, it just won't open. I have the most current iTunes installed. I have tried repairing it and reinstalling it but with no avail. Anybody have any suggestions?

Alright it looks like we're not the only ones having this issue. It seems like the recent iCloud update is giving window users problems. The solution is to go to task manager, click on the Processes tab, then look for APSDaemon.exe*32 the right click and end process. Then try restarting your iTunes and it should open.
Or if this really annoys you, then just go to control panel and remove iCloud.

Why does firefox stop loading then when i close it and try to open it up again I keep getting this 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

Firefox will just stop loading/ connecting to the internet. The gray circle will just continually move but it never turns green to load the pages. I know it's not my internet because my internet explorer works just fine while this is happening to firefox. So I close firefox and then try to re open it but 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. So I wait a little bit then try and re open it and still get the same message. I then go into my windows task manager and try and end the firefox proccess but it won't end. So I restart my computer and firefox eventually starts acting up again.

For possible causes of this error, and how to troubleshoot it see [[Firefox is already running but is not responding]].

FF doesn't open a new window , and doesn't open at all when I close it and try to open it again.

Initially when I start my PC Windows 7 Ultimate , FF opens fine , but it doesn't open a new window when I click on the option "Open a new Window " in the taskbar .When I right-click a tab and select the option "Move to a new Window" then too it doesn't work. Next when I close FF and and try to reopen it , it doesn't open at all.I have FF v34.0.5.

Gnome-shell issue. You can disable desktop management as a temporary fix, but the next gnome-shell update will fix the problem.
https://bbs.archlinux.org/viewtopic.php?id=175993
https://bugzilla.gnome.org/show_bug.cgi?id=722510
https://bugzilla.gnome.org/show_bug.cgi?id=722690

When I close Firefox then try to open it again, it informs me it is already running and continues to do so regardless of how many times I restart the computer.

I bought a new computer. I installed Firefox 7.0 then updated to 8.0. When I was finished with Firefox, I closed it. Later when I attempted to open it I was greeted with the message Firefox is already running. It suggested I restart the computer. I did so and continued to receive the same message. Surely, shutting the computer off should close Firefox. I have to use Internet Explorer to contact you.

Sounds like Firefox is "hanging at exit". That problem is frequently caused by an Extension or a Plugin. Read all of the following articles. 
#Stop the Firefox process:
#*[http://kb.mozillazine.org/Kill_application Mozillazine - Kill application]
#*Windows 7 users click [http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576 here]
#*Mac users: http://techheavy.com/2011/02/the-mac-task-manager/
#Why Firefox may hang:
#*[http://support.mozilla.com/en-US/kb/Firefox+hangs Firefox hangs] (see Hang at exit)
#*[http://kb.mozillazine.org/Firefox_hangs Firefox hangs (Mozillazine)] (see Hang at exit and Closing Firefox properly)
#*[https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding Firefox is already running but is not responding]
#Use Firefox Safe Mode to find a problem with an Extension or Plugin:
#*Don't check anything when entering Safe Mode, just continue
#*If the problem does not occur in Safe Mode it is probably and Extension or Plugin causing the problem
#*See:
#**[[Safe Mode]] and [http://kb.mozillazine.org/Safe_Mode Safe Mode (Mozillazine)]
#**[http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
#**[http://support.mozilla.com/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
#**[http://support.mozilla.com/en-US/kb/Basic+Troubleshooting Basic Troubleshooting]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''

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 '''Processes''' 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 '''before''' 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 '''one at a time''' until the problem reappears. '''You MUST close and restart Firefox after EACH change''' 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

When I close Firefox and open another instance of it to look at a new site I get a pop up window telling me Firefox hasn't shutdown yet.

When I close Firefox and open another instance of it to look at a new site I get a pop up window telling me Firefox hasn't shutdown yet. I am aware of tabs, but I prefer to just open new windows.
Do I really need a pop up window telling me that I just closed Firefox? Is there a way to disable it in options? I can't even use Buzof program to auto click for me. I've never had this issue with any other browser and I find it incredibly annoying.

I am not clear what you mean by:
''the program will only alow 1 website for each time I boot my machine,''
Are you talking about Firefox or something else in the above statement. Firefox will, or should allow you to open quite a few tabs at startup if you wish, although it will be faster the fewer that you do open.
When you say
''I close it the program does not completely close ''
Again what is happening, what error messages if any do you see, and what exactly makes you think Firefox is not closing properly.
Presumably you have already clicked on the blue links in my first post and read those articles.

My problem is after updating to Yosemite does my mail client any longer. I can not even open the mail, and when I "forced closes" mail and try to open it again to go in the entered settings running the colored wheels around and allows me only to forc

My problem is after updating to Yosemite does my mail client any longer. I can not even open the mail, and when I "forced closes" mail and try to open it again to go in the entered settings running the colored wheels around and allows me only to forcing close again? does anyone have a solution to the above problem?

You mean the default OS X mail app? Try reinstalling OS X Yosemite if that's the case.
If you are referring to 3rd party mail applications, that's a compatibility issue. Some apps don't work in the new operating system. You have to wait until the developer updates the app, or you have to revert back to Mavericks to continue using it.

When I close firefox and then open, all my tabs disapear.

When I close Firefox and then open Firefox all my tabs disapear.
== This happened ==
Every time Firefox opened
== I first set up a tab.

Tools > Options > General|Main > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
If you use [[Clear Recent History]] in Firefox 3.5 and later or [[Clearing private data|Clear Private Data]] in Firefox 3 to clear the 'Browsing History' when Firefox is closed then restoring tabs from the last session ("Save & Quit" or "Show my windows and tabs from last time") doesn't work.

When I close Firefox and then come back to it layer a box comes up that says it's already running. It ays to close Firefox first but when I hit close nothing happens and the box comes up again. I have to shut down my computer and restart to get into Firef

When I close Firefox and then come back to it later a box comes up that says it's already running. It says to close Firefox first but when I hit close nothing happens and the box comes up again. I have to shut down my computer and restart to get into Firefox again. If I can't get this fixed I will start using someone else. Someone told me a way to close Firefox but I forgot what they said.
== This happened ==
Every time Firefox opened
== a couple of months ago

Hello Brian.
You don't need to restart your computer to open Firefox again: you just need to close it manually through your application manager (CTRL+SHIFT+ESC in Processes tab). Anyway, hopefully this support article is what you need:
http://support.mozilla.com/en-US/kb/Firefox+hangs
What's probably happening is that you may be having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?
Whenever you have a problem with Firefox, whatever it is, you should make sure it's not coming from one of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in [http://support.mozilla.com/en-US/kb/Safe+Mode safe mode] and select ''Disable all add-ons''. If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes this article] for information about troubleshooting extensions and theme. You can troubleshoot plugins the same way.
If you want support for one of your add-ons, you'll need to contact its author.

Cant run itunes on my windows xp,when i install it and try to open itunes,it keeps on saying "itunes cant run because some of its required files are missing. please reinstall itunes... what can i do...

cant run itunes on my windows xp,when i install it and try to open itunes,it keeps on saying "itunes cant run because some of its required files are missing. please reinstall itunes... what can i do...

You should first uninstall iTunes completely.
This is not an easy task!
Read this article on how to remove iTunes completely
http://www.howtogeek.com/howto/23959/completely-remove-itunes-and-other-apple-so ftware-from-a-windows-computer/
Then download the latest version of iTunes for your Windows Version and install it.

When I close firefox and try to open it later, it won`t open, say it is all ready running but won`t open browser

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