Firefox is closed but it wont reopen, system says it is already running

(dont know if crash catagory is correct but love for you to look at this....)
Firefox 3.6.10: I have noticed over the last few weeks that after using Firefox for a little while I close it out to do something else, etc. Sometimes it reopens just fine like it should but increasingly when I try to open it, a message window pops up & says it is already running and cant open another one until this is closed. I checked the Task Manager but it is not listed there. The only way I have found to fix this is shut my computer down & restart. Virus & firewall are current and no problems identified in my system. Any ideas on how to fix this? Thank you

ah ok well thx i will do that and i think adobe needs to fix there plugins

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When I close Firefox and then try to open it, it says it is already running and I have to close it which I can't do. The only way to open it is to first restart my computer which is a pain. If I can't fix this I will use an other brouser!

I am not sure what more I can tell you. I close firefox. So when I click on the icon it should allow me to open it again but I get a message that says it is already running. Either close it out which I can't do since I already did that or restart the computer.

Try holding control, alt and delete down in succession and then a dialogue box will appear with windows task manager. Once open click on the Processes Tab and look for firefox.exe. Highlight this and then click end process. It should come up with a warning but just click Yes. This should then close firefox and allow you to reopen it from your desktop without shutting down your computer. Hope this helps.

After closing out, FF will not restart, says it is already running forcing me to reboot. I have removed and re-installed FF and still get the same message when trying to open the internet using FF. How can this be fixed?

When I close out Firefox, and return later to use the internet, I click on Firefox and it gives me a message stating that Firefox is already running and needs to be closed before restarting or reboot my system. This occurs every time Firefox is closed and attempt to re-start it,,, not only at times,,,, EVERY time.
I have tried removing Firefox from my system and re-installing to fix this issue however,,, this did not work. After re-installing, I still get the same message when attempting to restart Firefox.
I have also tried Ctrl, Alt, delete to open the task manager and find there is no task to close.
I do not have any problems when using IE, I prefer to use Firefox as it is faster and crashes less than IE.
I am very frustrated at having to reboot my system each time I want to use the internet.
How can this problem be repaired?

There are various causes for this error, see [[Firefox is already running but is not responding]] for details.

Often i try open firefox but I ge a message saying it's already running to wait until it shuts down or restart my computer??

for example I've closed Firefox earlier, but when I go to re open it I get the message that it is running

This has happened to me a couple of times many months ago. I either kill the task using task manager; or I just re-boot my pc. sometimes just best to completely shut down your pc, unplug the power for a few minutes, and restart. If you're like me and leave your pc in sleep mode for days or weeks at a time, a lot build up, which may cause some programs to hand for quite a while.

It crashes unexpectedly and when I try to reopen, it says it's already running yet my task manager doesn't show it and I can't reopen without restarting

Also, since I just downloaded the new version 2 days ago, I no longer have option for additional tabs to open. Not a happy camper right now.

See "Hang at exit":
* http://kb.mozillazine.org/Firefox_hangs
* http://kb.mozillazine.org/Firefox_crashes

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 have an iphone 3 and im trying to download apps but it wont let me says i need 4.4 or later but my itunes is on 11

i have an iphone 3 and im trying to download apps but it wont let me says i need 4.4 or later but my itunes is on 11

It's not referencing your iTunes version. It's referencing your device's iOS version. An iPhone 3G has a maximum iOS of 4.2.1. If an app requires an iOS higher than that, it will not work on your iPhone 3G.

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.

After I've closed Firefox and try to re-open it, it'll say it's already running. Have had to re-boot my computer several times a day to get it running again. HELP!!!!

This is a problem that I've been experiencing for the last month. After I've had Firefox open and then close it, when I try to re-open it, it says it's already running, but I have to re-boot my computer to get it going again. I have had to re-boot 5 times just today alone. What's up with that, and how can it be fixed??!!

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

I downloaded lion but it wont install, it says that the software has been tampered with. But i downloaded from the app store.

I downloaded lion but it wont install, it says that the software has been tampered with. But i downloaded from the app store.

I have been through the same process three times now. The downloaded file is 4.07GB. I deleted it and re-downloaded and I get the same error.

After FF is closed sometime I go to start FF I get a popup saying Ff is already running please close to open new window.

After closing FF latest version 7.0.1 I try to start ff again I get a popup window saying FF is already running please close FF to start a new window.
To get FF to run I have to log off then log on to windows and then everything is fine.
This does not occur all the time it is an intermittent problem, but is a PITA when it happens

May be your Firefox is running in the background. Ctrl+alt+del will bring up the task manager. See if FF is still running in applications or processes. If yes, kill it.

Everytime I try to open firefox it says it is already running. I restarted it, and unistalled it and it still says it's running?? What to do?

When I try to open firerox I get a pop up saying it's already running? I checked the taskbar to see if there are any firefox running, there were not, so I restarted my computer and I still got the same error message. So then I uninstalled firefox from my computer and then reinstalled, now I'm still getting the SAME error message!

See:
* [[Firefox is already running but is not responding]]

When I try to open Firefox, a pop up says it is already running and I must close a window or restart. I can not figure out how to close the window they are asking me to.

when I try to start Firefox, a pop up says it is already running and I must close a window or restart. I can not figure out what window they want me to close
== This happened ==
Every time Firefox opened
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; MDDC; .NET CLR 3.5.30729; .NET CLR 3.0.30618)

See http://kb.mozillazine.org/Firefox_hangs and [[Firefox hangs]] (Hang at exit)
Check in the Task Manager (XP: Ctrl+Alt+Del, Vista: Shift+Ctrl+ESC, Processes tab) if there are hanging Firefox processes.
If you see any ''firefox.exe'' processes then click the End button to end those Firefox processes.
You can only start Firefox in [[Safe mode]] or launch the [[Managing profiles|Profile Manager]] is all Firefox processes are ended.
See also http://kb.mozillazine.org/Kill_application

I am trying to download UCbrowser which is fine on my iPhone 5C but unable to download on my iPad2, It shows on cloud but I couldn't download, I tried to change date but still no go, It says "you've already purchased this so this will be downloaded now"

I am trying to download UCbrowser which is fine on my iPhone 5C but unable to download on my iPad2, It shows on cloud but I couldn't download, I tried to change date but still no go, It says "you've already purchased this so this will be downloaded now" but never downloads

Close the App Store app, reset your iPad and then try again.
To close the App Store, drag the app up from the multitasking display. Double tap the home button and you will see apps lined up going left to right across the screen. Swipe to get to the app that you want to close and then swipe "up" on the app preview thumbnail to close it.
Reset the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider if it appears on the screen - let go of the buttons. Let the iPad start up.

I attempt to open a second window from the icon but it does not open then when firefox is closed it will not reopen because it is still running in processes but no window displayed until you kill the process and then restart firefox.

I attempted to open a new window from the Firefox icon but nothing happens. I then went on browsing and closed Firefox but was later unable to open it. I checked processes and it was already running but there was no window displayed. I am running Windows 7 Professional.
This is repeated any time I already have the browser open and wish to open a second instance.

'''Open a second window (not a second tab, that is different) when Firefox is already running and displayed on the monitor'''
*Firefox button > New Tab > New Window
*CTRL+N
*'''''If using the Menu Bar''''': File > New Window
**To '''''temporarily''''' display and make choices from the Menu Bar press the ALT key or the F10 key
**Also see: https://support.mozilla.com/en-US/kb/Menu%20bar%20is%20missing
'''Firefox "hang on exit"'''
#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]
#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]
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Firefox is closed but it wont reopen, system says it is already running

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