Why my mozilla firefox cant open . and i had been uninstall and download and repeated 10 times already please show me a solution i cant do my work without it

please give me advise . when i clean the ccleaner its said mozilla in progress like 'cant clean the mozilla cache still running'
please give advise , im using firefox on internship program

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container 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.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating

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Why is mozilla firefox not opening after updating?

I updated mozilla firefox and rebooted my computer. Now when I click on mozilla firefox it does not open. An error message doesn't even pop up. I have full internet connection.

On which computer platform (Operating System) do you have that problem?
You posted with an Android user agent.

I keep getting a message that Firefox is open and not responding. That I have to close the Firefox application or restart my computer. A real pain. Why is the firefox application not closing in English

I keep getting a message that Firefox is open and not responding. That I have to close the Firefox application or restart my computer. A real pain. Why is the firefox application not closing.

Sounds like Firefox is "hanging at exit". That problem is frequently caused by an Extension or a Plugin. Read all of the following articles. 
NOTE: Establish a habit of exiting/closing Firefox with Firefox button > Exit or File > Exit to allow an orderly shutdown of Firefox and closing of all of the files that Firefox has open.
#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.org/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.org/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 an Extension or Plugin causing the problem
#*See:
#**[[Safe Mode]] and [http://kb.mozillazine.org/Safe_Mode Safe Mode (Mozillazine)]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
#**[http://support.mozilla.org/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.'''
Not related to your question, but...
You may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.org/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.org/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.org/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.org/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

Why will not Mozilla-Firefox not open in the version 3.5.16? The schoolonly supports version 3.0

My question is why does Mozilla Firefox version 3.5.1.6 not work when it always had in the past since 2009 approximately.
The only thing different is that I did purchase Norton 2011 then upgraded to Norton 2012 Anti-Virus Protection Suite.
The School I go to will only support Version 3.0 Firefox. I have installed the version 7.0 from your sight by clicking download. I used the older version 3.5.1.6 on my laptop as well with no problems but now it won't work and they both crash. I have clicked on send reports but no answers yet. The laptop as well as my desktop had viruses from a server that I used which I found out had two computers which weren't virus protected with current updated signatures. This was McAfee "Total Protection Suite" which did not give me any protection at all and this is what happened, and it should have at least blocked me from getting onto the Internet through the server. I only used this server as a gateway only. I never had this problem with AVG Protection Anti-Virus Suite, but then I changed to McAfee, which the server uses, and this is when all my problems started because two computers on this network were not protect with updated virus signatures. The viruses crashed my Laptop and almost my desktop as well. I ran Norton and this took care of the problem on my desktop and then I ran Malwarebytes and Hitman both Virus Scanners and removed all 53 viruses, PUPS, and other Malware.
I reinstalled both of the Mozilla Firefox version 3.5.2.6 and I got the message that said sorry the browser crashed and click OK to send a report to Firefox which I did. I can't start school without Mozilla Firefox as the School only supports Firefox 3.0. As I had corrupted files from the problems with all the Malware and I have resolved most of the issues now except that I will have to upgrade to Windows 7 "Home Premium" and I am working with Dell Tech. Support with this and trying to complete as much as possible before I call them back.
Will I be able to use the older version and is Norton 2012 the program causing the older versions not to work?

You can install the portable Firefox 3.6.x version, that comes with its own profile, to access websites that do not work with Firefox 5+.
*http://portableapps.com/apps/internet/firefox_portable#legacy
*http://portableapps.com/apps/internet/firefox_portable/localization#legacy36
You probably need to create a new profile because the SQLite version used in Firefox 3.5 is not compatible the the SQLite version that is used by current Firefox versions.
See "Basic Troubleshooting: Make a new profile":
*https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile
If that new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.
See:
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Why doesn't firefox close out when I'm done with it and close it; when next I try to open firefox again I get a dialog box telling me firefox is open and to close it or restart my computer? I'm tired of doing that one of more times a day.

1. This happens at least once a day, and sometimes multiple times. Today it's happened twice, thus far. My home page is FoxNews.com and if I leave it up overnight or for longer periods during the day firefox doesn't allow the refresh of the home page it just goes to yahoo 404--error can't find the webpage. Then when I enter FoxNews.com it adds a /error to the url and doesn't allow me to go to MY homepage. So I close firefox and then if I try to reopen it and then I get the dialog box saying firefox is open and to close it or restart my computer. Very aggravating. 2. Also the Adobe flash drive update always fails. 3. Webpages get in loops and fail to load to the point I have to stop and refresh or close out and reopen.

One situation in which Command+w or Ctrl+w might not work is if the "focus" is in a plugin such as the Flash player used on Youtube after you interact with the player controls. Firefox will continue to send the keyboard input to the plugin until you move the focus back to the page. Does that account for any of the problem?

Firefox wont open and i can't uninstall it from the control panel

firefox wont open and i can't uninstall it from control panel.When i try to open it i get a message saying "windows cannot access you may not have appropiate permission to access" Have tried to download firefox hoping would clear the old one also tried to open the uninstall wizard by pressing windows key and r but no joy with anything

Hi,
If it was installed as a Firefox extension you can try to '''Remove''' it in Firefox '''Tools''' ('''Alt''' + '''T''') > '''Add-ons''' > '''Extensions'''.
[https://support.mozilla.org/en-US/kb/Using%20extensions%20with%20Firefox Using extensions]
[https://support.mozilla.org/en-US/kb/Uninstalling%20add-ons Uninstalling add-ons]
[https://support.mozilla.org/en-US/kb/disable-or-remove-add-ons Disabling/removing add-ons]
[https://support.mozilla.org/en-US/kb/Customizing%20Firefox%20with%20add-ons Customizing Firefox]
On the other hand, if it was installed as a Windows application or Internet Explorer application, you may have to uninstall it via the Windows OS Control Panel, or via the browsers concerned. The [http://answers.microsoft.com/ Windows support] would be helpful.

Why is Mozilla Firefox so slow? It drives me nuts.

Why is Mozilla Firefox sooooo slow? It's driving me nuts.
And why can’t it ever connect me to my email on the first try?
And why does Firefox need to be rebooted so often?
It's all very frustrating.
Please respond.
Thanks

I took my computer in for cleanup yesterday and the tech told me not to resort to using safe mode, he uses Chrome and said all the features in these files need to stay there. He says he thinks Firefox needs to do some tweeking on their end because he's had so many people complaining of how slow it is. The newer the version, the slower it gets. Maybe if they quit adding so much junk you don't need, like the earlier versions, but can't download them anymore. So I'm doing like my technician and jakfak are doing, NOT using Firefox until they fix it. Chrome is my baby now.

Why does Mozilla Firefox use Google as their web search if Google stores everything we search?

Why does Mozilla Firefox use Google as their search engine if Google stores everything you search and track what you do online? I've got nothing against Firefox, I'm just wondering why.

I just figured they wouldn't have since they don't track what people do. I figured they were against that.

Firefox is OPEN and working fine, but when I click a link in Thunderbird I get '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.'

If I click a link on my desktop or in any other program (while Firefox is open and running), I get 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." There's about a billion links for this if you Google it, but they all say that Firefox wasn't shut down properly. (OK, maybe not ALL of them, but if the needle is in that haystack, I haven't yet found it.) That's not the issue in my case since I haven't shut FF down at all.
== This happened ==
Every time Firefox opened
== IDK

This began to happen to me when I tried to run two separate profiles simultaneously on the same installation of firefox with -no-remote

I get a dialog box with a copy of firefox is open and only one copy of firefox can be open at one time.

I get a dialog box with the following: "a copy of firefox is open and only one copy of firefox can be opened at one time."
I do not see where firefox is open.
How do get back into firefox so that i can read the links that are in my emails?
Thank you.

Sometimes when FF is closing, not all of it shuts down properly.
On Windows, start the '''Task Manager''' (Other systems may have
different names and / or commands). Select '''Processes'''.
Look down the list for Firefox. Right click and select '''End Task'''.
If this problem keeps coming up, ask for more help.

Firefox wont open and the task manager wont open as well

My firefox wont open and when i try to fix it by managing profiles, it wont start up. when i try to go through the task manager it also wont start up. i dont know what i can do to fix this. ive tried uninstalling and installing tons of times. i just dont know what to do

Clint:
Welcome to Apple Discussions.
In terms of the Firefox issue. Boot the computer and log in. Then go to Apple Menu > System Preferences > Accounts > Login Items and see if Firefox is listed there. If it is, then select it and click the minus sign at then bottom left. The reboot the computer and try to launch Firefox.
A couple of other things to check. Open a Finder Window (Commnand + N when in Finder) and look in the sidebar. Do you see a white disk-like icon named Firefox? If you do, click on it, drag the Firefox icon into the Applications folder, then eject the white disk icon.
If neither of the above work, hold down Command + Option + esc. Do you see Firefox in the list of items to Force quit? If you do, select it and Force quit.
Please let me know if any of these work.
In terms of Dashboard, do you have the install disk for the OS you have installed?
cornelius

I have updated version of Mozilla Firefox 25.0 And adobe flash Player also latest version but every time adobe crush what to do

i have updated version of Mozilla Firefox 25.0 And adobe flash Player also latest version but every time adobe crush what to do

This is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case:
(1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily.
(2) Disable hardware graphics acceleration in Firefox and in Flash
(A) In Firefox, un-check the box here and restart:
orange Firefox button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"
(B) In Flash, see this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues
(3) Disable protected mode (Windows Vista and higher)
See this support article from Adobe under the heading "Last Resort": [http://forums.adobe.com/message/4468493#TemporaryWorkaround Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?]
Any luck?

Why does mozilla firefox randomly launch by its self in windows 7

When the PC is idle Mozilla Firefox suddenly opens with me clicking on anything. The operating system is Windows 7

Are web pages opened when this happens?
Does this also happen when you set another browser as the default browser or is the other browser that is set as default browser opened instead?
Do a malware check with several malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
*Malwarebytes' Anti-Malware: http://www.malwarebytes.org/mbam.php
*AdwCleaner: http://www.bleepingcomputer.com/download/adwcleaner/ http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
*SuperAntispyware: http://www.superantispyware.com/
*Microsoft Safety Scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx
*Windows Defender: http://windows.microsoft.com/en-us/windows/using-defender
*Spybot Search & Destroy: http://www.safer-networking.org/en/index.html
*Kasperky Free Security Scan: http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
*Anti-rootkit utility TDSSKiller: http://support.kaspersky.com/5350?el=88446
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

I used to use SpeedBit Video Downloader with Mozilla Firefox, but suddenly a problem happened, I can not download with it now at all as there is an code error appears in the bar of SpeedBit like "XML Parsing Error: unclosed token Location: chrome://browse

I used to use SpeedBit Video Downloader with Mozilla Firefox, but suddenly a problem happened, I can not download with it now at all as there is an code error appears in the bar of SpeedBit like "XML Parsing Error: unclosed token Location: chrome://browser/content/browser.xul Line Number 1, column 8702:....................."
I did evrey thing, but the same problem
reinstall SpeedBit, reinstall Mozilla Firefox.
So what can I do!
== This happened ==
Every time Firefox opened
== 4 days ago

look people, i may have a solution for this. This happened to me a few times before and resolved alone, but last time it happened was when i turned off my router and back on while my comp was running and appeared when i tried opening firefox after that. so wat i did was i shutdown the computer and the router and tried turning both on again, and it resolved.
Therefore, Summary: Shutdown computer then turnoff router then turn both back on
Hope this helps anyone.

I'm trying to install Adobe PS CS3 for my boss on an other computer. I put the Program on a hard disc and copied it to the other computer now it won't open and says it needs the license. What can I do to make it work on this computer?

I'm trying to install Adobe PS CS3 for my boss on an other computer. I put the Program on a hard disc and copied it to the other computer now it won't open and says it needs the license. What can I do to make it work on this computer?

Copying the program over to a new machine will not work. Install it using installation files and activate it using the serial number assigned to the license.
CS3 - http://helpx.adobe.com/creative-suite/kb/cs3-product-downloads.html

Why my mozilla firefox cant open . and i had been uninstall and download and repeated 10 times already please show me a solution i cant do my work without it

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