Firefox will not open, and I can't uninstall/reinstall because it says "close Firefox first"

After running Ccleaner today (and it asked me to "close Firefox or the internet cache will not be cleared", but Firefox was closed or so I think), I can't open Firefox at all; double-clicking the Firefox icon on the desktop does nothing, and no other way works. I thought of doing an uninstall/reinstall but it says "close Firefox first" - but for me it is truly closed.

See if you can Force Quit things holding CMD+Option+esc keys.

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Firefox will not open on my computer, even after reinstall. Please help?

I've been using Firefox for a long time and it's been working well. I'm on acer Windows 7. However now it will not open even when I try to run "C:\Program Files\Mozilla Firefox\firefox.exe". Chrome or Internet Explorer work fine. I also reinstalled Firefox and it still doesn't work.
Here's the id of my latest crash (from 30.4.2014): bp-4e981129-aea6-4b23-87a2-739b42140430
Thank you for any help with fixing this.

Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
Profile Backup and Restore
*http://kb.mozillazine.org/Profile_backup
*https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Firefox will not open and states that its already running. But is not?

After several opening and closing of Firefox several time it will not open when I click on the desk top icon. A screen will come up that Firefox is already running and that I will have to close it before I can start Firefox. To correct this I have to restart the computer. It will then work ok for a few time but will then not start again.

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

I installed safari 8.0.1 and now my computer is slow and will not open some pages can i uninstall

I installed safari 8.0.1 and now my mac is really really slow and will not open some pages. Can I uninstall?

Please answer as many of the following questions as you can. You may already have answered some of them. In that case, there's no need to repeat the answers.
Have you restarted your router and your broadband device (if they're separate) since you first noticed the problem? If not, do that now and see whether there's any change.
If your browser is Safari, then from the Safari menu bar, select
Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data
and confirm. Any change?
If you're running OS X 10.9 or later, select the Advanced tab in the Preferences window and uncheck the box marked
Stop plug-ins to save power
Any change?
Quit and relaunch the browser. Any change?
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Enable Private Browsing in the Safari menu. Any change?
Are any other web browsers installed, and are they the same? What about other Internet applications, such as iTunes and the App Store?
If other browsers and Internet applications are also affected, follow these instructions and test. Any change?
If Parental Controls is active for any user, please turn it off and test. Any change?
If only Safari is affected, launch the Activity Monitor application and enter "web" (without the quotes) in the search box. If a process named "Safari Web Content" is shown in red or is using more than about 5% of a CPU, select it and force it to quit by clicking the X or Quit Process button in the toolbar of the window. There may be more than one such process. Any improvement?
Open the iCloud preference pane and uncheck the box marked Photos, if it's checked. Any change?
Are there any other devices on the same network that can browse the Web, and are they affected?
If you can test Safari on another network, is it the same there?
If you connect to your router with Wi-Fi and you can also connect with Ethernet, do that and turn off Wi-Fi. Any difference?

Firefox will not open and my profile name changes, after I creat a new profile it works until I try to open again

Firefox version 16.0.2 was working I have used FF for years. A few days ago it started to run very slow opening web sites. Then this morning when I tried to open it I saw a progress bar that looked like the kind I see after an update has been applied but FF never opened.
I rebooted my windows 7 64 bit and tried again, nothing FF would not open and I got no error message.
So I opened the profile manager and only found a default profile not the one I created last year with my name. I created a new profile and browsed to my old profile folder. FF opened and ran fine until I closed it and later tried to open it again then I kept getting an error box telling me that FF had crashed and asked if I wanted to send a report and restart, I did but no good it still would not open.
I ran the profile manager again and found my profile had changed name to a bunch of numbers. I delete that profile but kept the folder then made a new one and that worked. I shut it down again and once again I get the We're sorry error box.
By the way I had set the profile manager to open when FF loads and it is not opening so the problem is before it gets to that command.

First I already have my view set to show everything so that is not the problem.
But I just tried opening "Computer" from the start button then type in profiles.ini in the address bar and hit enter. The profile manager opened with my profile listed. I selected it and hit start firefox and it opened as it should.
I closed it again and tried to open it from the shortcut in my task bar and I got the Sorry window.
But then I tried to open it from the short cut you get when you press the start button and program list and it work!
I went back to my desk top and tried the short cut on the desk top and it worked.
So I deleted the short cut on the task bar and created a new one and it worked.
I rebooted the computer and tried again and the task bar shortcut works and has the right profile.
So it seems that the problem is that the short cut was corrupted and was causing the error that caused the program to fail to open.
I had no idea a shortcut could do that. In the past I have had short cut stop working but never do what this one did.
I still have no idea where the profiles.ini is.

Icloud control panel will not open. " You can't sign in because of a server error".

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Here we are in 2014 and they still havent resolved the issue .. not impressing at all ... **** poor deisgn ... think these geeks wouild have figured it out by now

Downloaded and installed yosemite. Now iPhoto will not open and when i try to update it it says not available for my apple id. Help

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- Apps are locked to the account that purchased them.
- To update apps you have to sign into the account that purchased the apps. If you have apps that need updating purchased from more than one account you have to update them one at a time until the remaining apps were purchased from one account.

I Updated to 8.0 and now firefox will not open and I receive an Error message stating that 7.0.1 is not compatible with Min version 8.0 and max version 8.0. What can I do now?

I tried uninstalling 7.0.1 and reinstalling it and still it would not update and problems such as losing my bookmarks, and it having different tool bars and add ons each time I opened it. I lost so many bookmarks and it became so frustrating that I decided to try and upgrade to see if that would overcome the problems. And now I have this problem. When I did a search on my hard drive to see how many firefox components there were I found firefox related files and documents all over the place and wondered if I should just delete anything related to firefox to clean any residual files that might be causing problems and then start a clean download, but I didn't want to delete files in windows and wasn't sure what I should delete and what I should leave. Can anyone help?? I miss my firefox and wish that I had never upgraded to 7.0.1 .

If you use ZoneAlarm Extreme Security then try to disable Virtualization.
*http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
See also:
*[[/questions/880050]]

Your firefox profile cannot be loaded. It may be missing or inaccessible. Firefox will not open and I don't have another internet program on my computer. How can I get the profile back?

Everytime I try to open firefox on my desktop it says "Your Firefox profile cannot be loaded. It may be missing or inaccessible." So now I cannot open firefox at all and I can't figure out how to get a profile. I just had to delete some programs to gain memory on my system and that is when the problem started. I don't have another internet program

Hi crmn,
Have you looked at the Knowledge Base article [[Recovering important data from an old profile]]? There are steps in there that might help you. You might just want to create a new profile and start fresh.
Hopefully this helps!

Firefox will not open and states another version is running and to close it first. I am not aware of having any other firefox system on my system?

When trying to log onto Firefox to access the website, a message comes up stating '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'.
Having not located any other firefox on my computer I decided to delete the program from my computer and then download another copy. This I diod and my computer was back to normal accessing firefox. This morning I am experiencing the same problem again with firefox refusing to open whilst another firefox system is running.
I would be gratefujl if you could help to overcome this problem so that I can use firefox as always have done so in the past.
Kind Regards
Terence Darch

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

Firefox will not open and I've tried every solution suggested.

My computer got shut off in the middle of an update/upgrade and when I restarted I got a long error message, so I restored my computer back like 3 days, firefox just didn't open at all after that, no matter what way I try to open it. I have years worth of important bookmarks I can't lose, and I read that reinstalling doesn't fix anything, please help!

Hi,
If the data hasn't been corrupted due to disk corruption, you can try to take a backup of the needed files, reinstall Firefox and check. Hopefully the old data will be still there, otherwise you can use the backup to overwrite any files Firefox may have newly created. Your personal data are stored separately from the Firefox files. Please see [https://support.mozilla.org/en-US/kb/Backing%20up%20your%20information?s=backup&r=1&e=sph&as=s backup]. The bookmarks and history are stored in the '''places.sqlite'''. You can also take a backup of the most recent file in the '''bookmarks''' folder.
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Personal Files]
[https://www.mozilla.org/en-US/firefox/new/ Latest Firefox]

Firefox will not open and crashes after my lastest Windows 7 update on April 21st, 2015

After I completed the latest Windows 7 Update I have not been able to access Firefox. Upon opening the program I am given "Firefox has stopped working" message as the image shows. Never had any issues with Firefox before. I have Uninstalled and Reinstalled the latest Firefox version with the same results.
Please guide me to fix this problem
Adam

You can check if you can start Firefox in [[Safe Mode|Safe Mode]] by holding down the Shift/Options key.
*https://support.mozilla.org/kb/Safe+Mode
If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:
*bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
You can find the Report ID of recent crash reports on the "Help > Troubleshooting Information" page (about:support).
*Click the "All Crash Reports" button on this page to open the about:crashes page and see all crash reports.
If necessary then you can open about: pages via the location/address bar.
See:
*http://kb.mozillazine.org/Mozilla_Crash_Reporter
*https://support.mozilla.org/kb/Mozilla+Crash+Reporter
If you can't open Firefox, see:
*http://kb.mozillazine.org/Mozilla_Crash_Reporter#Location_of_crash_reports
*http://kb.mozillazine.org/Mozilla_Crash_Reporter#Viewing_crash_reports
*https://developer.mozilla.org/How_to_get_a_stacktrace_for_a_bug_report

Firefox will not open and keeps crashing when I attempt to open it, why?

I have had several crash reports sent to me by firefox and I have not gone to any sites that I don't normally go to. I want to know why it keeps to this and what I need to do to get this situation fixed. I have sent crash reports and uninstalled/reinstalled this program and nothing has been fixed. I need to use this site so that I can use my bookmarks and do my work.

Have you tried this?
How to Enter iPhone Recovery Mode
1) Connect the USB cable used to sync your device to your computer, but do not connect it to your iPhone.
2) Turn your iPhone off by holding down the sleep/hold button in the top right corner until the slider appears at the top. Slide it. If your phone won't respond to that, hold the sleep/wake button and the home button together until the screen goes dark.
3) When the phone is off, hold down the home button and connect the USB cable (which should still be attached to your computer) to the dock connector. The iPhone will turn on and display the Apple logo. Keep holding the home button until the iTunes logo/USB cable appear on the screen. You can let it go then. The phone is now in recovery mode.
4) If the red empty battery icon appears onscreen, let the phone charge for a few minutes and then restart this process.
5) When the phone is in recovery mode, a window will pop up in iTunes saying that the phone is in recovery mode and needs to be restored.

Mozilla firefox will not open, and wen i tried to open the uninstall helper, that wont open either

when i tried to uninstall it, it doesnt open a window to let me uninstall it. when i tried to open it, it doesnt do anything. when i tried to use the uninstall helper, that doesnt open either. idk y Firefox is actin up, ive never had a problem with it before

Did you check your security software (firewall)?
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, possibly after detecting changes (update) to the Firefox program.
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.
See [[Server not found]] and [[Firewalls]] and http://kb.mozillazine.org/Firewalls
If necessary then also see:
* http://kb.mozillazine.org/Browser_will_not_start_up
* http://kb.mozillazine.org/Error_loading_websites

Firefox will not open and it will not let me uninstall it because it says that the program is in use; however it will not open. What do I do?

When I click on the shortcut for the program it does not load. When I attempted to fix the problem, everything tells me that firefox is currently open when in fact (as far as I can tell) it is not.

If you use ZoneAlarm Extreme Security then try to disable Virtualization.
*http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
See also:
*[[/questions/880050]]

Firefox will not open, and I can't uninstall/reinstall because it says "close Firefox first"

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