FireFox will not start, I even uninstalled it and reinstalled and cannot get it to open. When I click on the icon it seems like something is about to happen and then nothing does. No processes activate it Windows Task Manager either.

See question.

'''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]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''

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Please help. My facebook app will not open on my iphone 4. I deleted it,numerous times and downloaded it again. It uploads, but when you click on the icon, it flickers then closes.
Help.

Then the next step would be to restore your phone. My advice is that prior to restoring you import your photos and videos to your computer and back up your contacts (by syncing them with iCloud or to a supported program on your computer using iTunes) as a number of users report losing these when restoring their device.

Firefox will not open when I click on the icon (OS X).

Firefox worked perfectly until I installed the most recent update. After I installed the update Firefox refused to open. When I click on the icon it begins to open but I never see the window and it closes within 3 seconds and I never even get an error message. Help!!!
== Operating system ==
OS X

Also having the same problem.
I have tried the following with no luck.
*Uninstalling and deleting profile + profile.ini then reinstalling
*deleting the .parentlock file
*deleting and reinstalling version 3.6.8.dmg
*Checked the activity monitor that the application isn't listed as running
*Downloaded addtrap and uninstalled again
all with no luck.
Try some of these first as they might fix your problem but not mine! ;)
If anyone knows of something I may be missing I would appreciate any help.
Thanks

Firefox won't open when I click on the icon. I've tried uninstalling so that I can reinstall, but it says I have to close firefox (which isn't open), so I'm stuck.

The problem: Firefox won't open when I click on the program.
Solutions tried: #1) I tried to uninstall the program so that I can download it again, but the screen shows the message "firefox must be clsoed.. to proceed with installation". However, firefox is not open.
#2) I tried to download firefox, thinking that possibly it would update and solve the problem. However, I get the same error message that "firefox must be clsoed.. to proceed with installation" Problem is that firefox is not open.
I've done a screen shot, so you can see that I do not have the firefox browser open.

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Firefox does not open when i click on the icon or menu path

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i tried running it in safemode but it does the same thing. furthermore, i deleted the whole program and reinstalled it hoping that that might fix the problem. however that did not work, i have searched all the offered support and have come up dry.
i am running the current firefox version and i am using a windows 7 professional operating system

Hi,
It could be that a security software installed in the system is blocking the new updated Firefox executable. You may have to go into the settings of the security software to re-trust Firefox.
Please also check if you are able to start Firefox by browsing to the Firefox installation folder ('''Program Files (x86)\Mozilla Firefox\''' or '''Program Files\Mozilla Firefox\''' ) and clicking '''firefox'''.
Useful links:
[https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options]
[http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config]
[http://kb.mozillazine.org/About:config_entries about:config Entries]
[https://support.mozilla.com/en-US/kb/Page%20Info%20window Page Info] Tools (Alt + T) > Page Info, Right-click > View Page Info
[https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts]
[https://support.mozilla.com/en-US/kb/Viewing%20video%20in%20Firefox%20without%20a%20plugin Viewing Video without Plugins]
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
[https://developer.mozilla.org/en/Command_Line_Options#Browser Firefox Commands]
[https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting Basic Troubleshooting]
[https://support.mozilla.com/en-US/kb/common-questions-after-upgrading-firefox-36 After Upgrading]
[https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]
[http://kb.mozillazine.org/Problematic_extensions Problematic Extensions]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins Troubleshooting Plugins]
[http://kb.mozillazine.org/Testing_plugins Testing Plugins]

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See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating
Can you start Firefox in [[Safe Mode|Safe Mode]] by holding down the Shift/Options key?
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

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My firefox does not open, when I click on the icon nothing happens

My firefox does nothing at all.

Also having the same problem.
I have tried the following with no luck.
*Uninstalling and deleting profile + profile.ini then reinstalling
*deleting the .parentlock file
*deleting and reinstalling version 3.6.8.dmg
*Checked the activity monitor that the application isn't listed as running
*Downloaded addtrap and uninstalled again
all with no luck.
Try some of these first as they might fix your problem but not mine! ;)
If anyone knows of something I may be missing I would appreciate any help.
Thanks

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Also having the same problem.
I have tried the following with no luck.
*Uninstalling and deleting profile + profile.ini then reinstalling
*deleting the .parentlock file
*deleting and reinstalling version 3.6.8.dmg
*Checked the activity monitor that the application isn't listed as running
*Downloaded addtrap and uninstalled again
all with no luck.
Try some of these first as they might fix your problem but not mine! ;)
If anyone knows of something I may be missing I would appreciate any help.
Thanks

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Firefox will not start up even after I uninstalled and reinstalled.

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== 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; .NET CLR 3.0.30618)

One of your add-ons might be the culprit. Try running Firefox in [[Safe Mode]]. If that solves the problem, see [[Troubleshooting extensions and themes]] and possibly [[Troubleshooting plugins]]
~~~~~~~~~~~
If that does not solve the problem, [http://support.mozilla.com/en-US/kb/Managing+profiles#Creating_a_profile create a new profile] Then, Recover your data from the old profile. See http://support.mozilla.com/en-US/kb/Recovering+important+data+from+an+old+profile'

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Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.com/kb/Server+not+found
*https://support.mozilla.com/kb/Firewalls
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
See also:
*http://kb.mozillazine.org/Firefox_crashes
*https://support.mozilla.com/kb/Firefox+crashes

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I can't open Firefox.

From the menu bar, select
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FireFox will not start, I even uninstalled it and reinstalled and cannot get it to open. When I click on the icon it seems like something is about to happen and then nothing does. No processes activate it Windows Task Manager either.

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