Cannot uninstall, reinstall Firefox in Win7

Firefox has been running fine for years (currently 3.6) but then would not load, with error message FF already running. Reboot allowed FF to open, but subsequently after closing net traffic running at max DSL assigned rate. Ran AV scan--nothing, Ran system restore (twice) without effect.
Managed uninstall (after reboot) but could not successfully re-install any version of FF3. Saved all default-profile files to temp folder to copy back to new profile. This did not work. Last installation attempt FF setup did not create profile folder
When FF installed but not opening, there are two iterations of firefox.exe running as system processes. I would very much like to get this working--I will not use IE, and am not wild about Google Chrome.

You are definitely not alone. There are several threads with what appears to be this same, Catch-22 problem. Uninstall won't allow uninstallation for a clean reinstall because "a copy is running", but the alleged copy cannot be found. Ghosts. Voodoo. I checked the profile.ini file and it seems correct; this has been suggested but is not the answer, not for me anyway.

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Even after uninstalling, reinstalling Firefox, the Firefox profile folder is empty, and I get the message "Firefox is still running and not responding close firefox...

Even after uninstalling, reinstalling Firefox, the Firefox profile folder is empty, and 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." I have followed all the directions I can find, on my computer and Firefox Support. Still, the same message comes up, and "firefox" is not shown in my Windows Task Manager.
What can I do?

Delete the profiles.ini file and let Firefox create a new default profile.
* http://kb.mozillazine.org/profiles.ini_file
* http://kb.mozillazine.org/Profile_folder_-_Firefox#Files_and_folders_outside_the_profile_folder

When I open firefox, normal tabs open, then several more that all show: Firefox can't find the file at /C:/Program Files (x86)/Mozilla Firefox/W¨'ÂÒ×žß¬¤ïžìWv¥YH´ªï]ã9v€Õ°pÎ%0C ï½Q2. I have uninstalled/reinstalled firefox with no help.

I can use the regular tabs, but new tabs will continue to open with strange things on them. One was marked as a Dangerous page by my anti-virus program (Trend Micro).

Don't what to say but WOW! downloaded and ran malwarebytes. It found a Trojan and something else. At the same time, my Trend Micro finally ran a scan and found 2 trojans and a cycbot, both associated with Adobe. Did the superantispyware program too, found a couple things. Uninstalled reinstalled firefox without any of the old personal settings, so NO add-ons at all. Opened in SAFE MODE and the error STILL persists. Computer does not want to shut-down and I find that I can do a few things then programs won't open anymore (such as my Trend Micro antivirus and even firefox.) I have no idea how any of this happened. I know a fair amount about computers and do NOT open links etc that I am not sure about. It was working fine while using in my truck yesterday. When I brought it in the house, it started doing all this. Just plain WEIRD! Any other ideas?

Comcast's 'upgraded' email doesn't work in Firefox; they want me to uninstall/reinstall Firefox; will this work?

Comcast's new email - Xfinity Connect - does not work in Firefox. Comcast support wants me to uninstall & reinstall Firefox. I know others have had this problem; has anyone found a solution?

Was this feature turned off?
Auto complete entries: [[Control whether Firefox automatically fills in forms with your information]]
Does this happen in Safe Mode?
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).
'''If Firefox is open,''' you can restart in Firefox Safe Mode from the Help menu:
* Click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''.
'''If Firefox is not running,''' you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
;[[Image:SafeMode-Fx35]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.

I cannot uninstall mozilla firefox from my computer. what is the problem and how can i fix it?

i cannot uninstall mozilla firefox from my computer. what is the problem? how can i get it off of my computer?

Sounds like it is time for an out of warranty replacement or an upgrade to the iPhone 4.

If I uninstall/reinstall Firefox, will I lose my bookmarks?

I want to uninstall then reinstall Firefox in an attempt to correct the following issues: (1) Firefox keeps prompting my user names/passwords, thus creating a security hazard; (2) Firefox is continually crashing. I want to know whether uninstalling firefox will cause me to lose my bookmarks, and if so, how can loss be prevented?

See:
* http://kb.mozillazine.org/Firefox_crashes
* https://support.mozilla.com/kb/Firefox+crashes
If you have submitted Breakpad crash reports then post the IDs of one or more Breakpad crash reports (bp-xxxxxxxx-xxxxxxxxx-xxxx-xxxxxxxxxxxx).
You can find the IDs of the submitted crash reports on the about:crashes page. 
You can open the about:crashes page via the location bar, like you open a website.
See:
* http://kb.mozillazine.org/Breakpad (Mozilla Crash Reporter)
* http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox
* http://kb.mozillazine.org/Profile_backup

How do I uninstall (& reinstall) Firefox when WinXP won't let me?

Using Win XP. I want to uninstall and reinstall Firefox because of an unwanted search engine app. I first uninstalled Firefox maintenance. Now XP won't let me uninstall Firefox. The control panel quickly flashes a screen but won't proceed with the uninstall. I tried instantiating maintenance from within the folder on my C drive but no response. I suspect by removing the "maintenance" app I've tied my own hands. Thanks for your help.

Hi marvinglen, sorry that you are having problems sorting-out Firefox.
I am not sure that ''Firefox Maintenance'' has much of an effect on Windows XP
* see [[What is the Mozilla Maintenance Service?]]
Uninstalling and reinstalling Firefox may be ineffective in removing an unwanted search engine app. It depends rather on what it is you have that you are now trying to remove. Some of these search helpers etc install globally within Windows and will need to be removed from the Windows control panel once you identify them.
Whatever you do I strongly suggest you do NOT use any option from Windows or Firefox that offers to remove personal settings, because that is likely to destroy settings including bookmarks and passwords. (If you see the ResetFirefox option also do not use that, without first taking note of what it removes - all your extensions, and some settings)
Once any rogue software is uninstalled you will need to reset any Firefox settings that have been messed up, but there is an add-on that is often capable of accomplishing that easily.
* see [[Remove a toolbar that has taken over your Firefox search or home page]]
** and consider use of https://addons.mozilla.org/en-US/firefox/addon/searchreset/
Please read the linked articles and post back with how you get on, and say specifically what it is you have found and are trying to remove.

How do uninstall / reinstall Firefox without losing bookmarks / favorites

I recently upgraded Firefox to the 'optimized for Yahoo' version and have been experiencing slow starts and stalls. This happened once before when I upgraded Internet Explorer to an 'optimized for Yahoo' version. I was able to uninstall it and reinstalled the latest version from Microsoft, but I lost all my bookmarks / favorites in the process.

I reinstalled Firefox and the problem was solved. I have to say I am pretty disappointed with the support that I have got here. The helpers listed all the ways that I try to fix the problem but none of them worked. Also backing up data did not do anything. I lost all my history and saved password even though I followed the exact same steps as you gave me.
Seems like a lot of people are facing the youtube video problem, hope you guys can figure out how to fix it so that everyone is satisfied with using your service.
Thank you.

"firefox already running"problem,uninstalled-reinstalled firefox still no luck,anyone? Thank You

Firefox was not in the processes in the windows task manager but "already running" would always pop up. Uninstalled reinstalled and "firefox already running"came up again.

Do you still have the default profile?
See:
http://kb.mozillazine.org/Recovering_a_missing_profile
http://kb.mozillazine.org/Profile_in_use

How do I uninstall/reinstall firefox?

I have been having a LOT of trouble with Firefox 5. I need to know how to uninstall it?

Hi marvinglen, sorry that you are having problems sorting-out Firefox.
I am not sure that ''Firefox Maintenance'' has much of an effect on Windows XP
* see [[What is the Mozilla Maintenance Service?]]
Uninstalling and reinstalling Firefox may be ineffective in removing an unwanted search engine app. It depends rather on what it is you have that you are now trying to remove. Some of these search helpers etc install globally within Windows and will need to be removed from the Windows control panel once you identify them.
Whatever you do I strongly suggest you do NOT use any option from Windows or Firefox that offers to remove personal settings, because that is likely to destroy settings including bookmarks and passwords. (If you see the ResetFirefox option also do not use that, without first taking note of what it removes - all your extensions, and some settings)
Once any rogue software is uninstalled you will need to reset any Firefox settings that have been messed up, but there is an add-on that is often capable of accomplishing that easily.
* see [[Remove a toolbar that has taken over your Firefox search or home page]]
** and consider use of https://addons.mozilla.org/en-US/firefox/addon/searchreset/
Please read the linked articles and post back with how you get on, and say specifically what it is you have found and are trying to remove.

Cannot uninstall, reinstall or use itunes!!

I have a pc using windows 8 (I believe). Have used and downloaded music to an IPOD in the past. But lately I cannot get itunes to open up. I just hooked up an apple tv box and trying to connect to itunes, but everytime I try to open, uninstall (to reinstall, which it was suggested I do) it gives a message that it cannot locate 'itunes.msi'. I have searched in program files, etc... and cannot locate it, and therefore cannot try to uninstall/reinstall. What do I do? I am not very savy on the computer. Thanks a million!!

Hi youngbloodmary,
Have you been using the steps in the following article to help you uninstall iTunes?
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
http://support.apple.com/kb/ht1923
Especially take note that these items need to be uninstalled in a specific order:
1. Remove iTunes and related components from the Control Panel
Use the Control Panel to uninstall iTunes and related software components in the following order and then restart your computer:
iTunes
Apple Software Update
Apple Mobile Device Support
Bonjour
Apple Application Support (iTunes 9 or later)
Important: Uninstalling these components in a different order, or only uninstalling some of these components may have unintended affects.
Thanks for using the Apple Support Communities. Have a good one!
-Braden

After a complete uninstall/reinstall Firefox still crashes on exit every time

Firefoc crashes on exit every time. Did a complete uninstall/reinstall. Did not change or add anything after the install.
== Crash ID(s) ==
af89b2d3-f902-4cb1-a5dc-d98842100510
== User Agent ==
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.29 Safari/533.4

That is a problem with the "Facebook Photo Uploader" (fbplugin).
*[https://bugzilla.mozilla.org/show_bug.cgi?id=1086977 bug 1086977] [10.10] Facebook's old "Facebook Photo Uploader" (fbplugin) crashes on load on OS X Yosemite
You can check these location if you can find this plugin file:
* /Library/Internet Plug-Ins
* ~/Library/Internet Plug-Ins
*https://developer.mozilla.org/Gecko_Plugin_API_Reference/Plug-in_Basics#How_Gecko_Finds_Plug-ins
In Mac OS X v10.7 and later, the ~/Library folder is a hidden folder.
*http://kb.mozillazine.org/Show_hidden_files_and_folders#Mac_OS_X

Unable to open window. I cleared my cache, and since then, although firefox is running and shows that I have open windows, I cannot "maximize" them. I have restarted my computer, and uninstalled/reinstalled firefox with no change.

I would rather just have someone call me, or give me your phone number so that I can explain. I don't know what else to tell you... the windows don't open up when I click on them in the toobar along the bottom of the page.
My phone number is 504-235-1500 - a New Orleans number, but I live in Santa Rosa, CA.

Can you start Firefox in [[Safe mode]] ?
You can also do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
You can initially skip the step to create a new profile, that may not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

Cannot uninstall Mozilla Firefox 4.0.1, downloaded two days back using the control panel or the Revo Uninstaller.

I had downloaded Mozilla Firefox 2 days back, overriding the existing version 3.6.13.
But I find the new version rather unusable. I am very familiar with the FF 3.6 version, which I have been using over 2 years. Hence I would like to revert back to the earlier version 3.6.13.
Mozilla Help informed that I should first uninstall version 4.x and then reinstall the earlier version.''But I am unable to find the version 4.x, either through the Control Panel or through the program Revo Unistaller'''. '''How can I proceed to restore back the earlier version 3.6?'''

'''@jef001 :'''
Thanks for your helpful answer. However, now after a few trials and errors in using FF 4.0.1, I have got the hang of using the same fairly well and I shall continue with the same .
'''@Editor:'''
Thanks for your comments . I think that my wording in the question has caused some ambiguity. Actually, I updated using the Mozilla FF Help menu only. I was trying to '''uninstall''' the new version using the Revo Uninstaller, as I did not find the FF 4.0.1 in the Windows Uninstall List, and not '''installing''' it through Revo Uninstaller. However, my above reply to jef001, should clear up the issue of my continuing with FF 4.0.1 .
- - arasan77

Cannot uninstall/reinstall drivers, Audigy 2

Ok, I got myself into a fix this time, I suppose. I get sound from my speakers, but the problem is, I am unable to remove the drivers from my Audigy 2 ZS sound card. When I installed the card, i just installed the basics only, that is, I installed only the drivers. Later, I went to try and install my THX console, EAX, etc, and the installation program terminates. From my Add/Remove programs window, i can remove Media Source Go!, however, but it wont let me remove the "Audigy 2 ZS" entry from that window.
I put the driver disc that came with the sound card in my CD rom and started it up. When the option menu popped up, i clicked the "install" button for the auidgy 2 drivers. After this, a box pops up and says "Modify, Repair, Remove" and i can click one of them. I click the "remove" button, a confirmation box pops up asking me if i really want to, I click yes, the removal process starts, but then another box pops up which says:
Unhandled Exception
Error Number: 0x8004020
Description: An event was unable to invoke any of the subscribers
Setup will now terminate
So, from here, there is no way for me to uninstall, or reinstall the drivers. Ive deleted all the Creative folders from my hard dri've, then use registry mechanic to go through and delete any leftover entries that may be in my registry, but I still cannot get this to work.
Would appreciate it if someone had an answer.

any ideas anyone? i've tried removing it in safe mode, even tried a driver cleaner program to maybe get rid of some old drivers. nothing seems to be working here.

Cannot uninstall, reinstall Firefox in Win7

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