CANNOT KILL an already running profile!

I know this problem has been done to death on here. first profile been running since yesterday, probably half way to china by now. its listed in the p-mgr. & profiles.ini file. did a firefox files search to include hidden files & found the folder, but only 5 files were in it, & none were any help. none of the suggestions here & mozillazine offer any help. there has to be a way somehow, right?

You're welcome
A possible cause is security software (firewall) that 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 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
Start Firefox in [[Safe Mode]] to check if one of the extensions 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

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Firefox already running, profile missing or inaccessible, cannot kill in task manager

For reference, this is on windows 8
In the past I've (very rarely) had the "firefox is already running" error and was able to fix it by ending the process in task manager. I updated to firefox 36 the other day. Since then, firefox will run perfectly normally for a while, but after some time (varies from minutes to hours) I can no longer load new pages. The loading wheel just keeps spinning.
Once this has happened, if I quit firefox and try to open it again, it will give me "firefox already running" followed by "profile missing or inaccessible" error messages. If I go to task manager, sometimes no firefox.exe is there, sometimes it is and I cannot close it. In either case I still can't start the program.
I tried reinstalling firefox, which did not fix the issue. I've also tried creating a new profile, again to no avail. AVG picks up no malware. I did a system restore to a week ago, which seemed to work for a while, but the problem has started again. I'm looking for a solution other than installing an old version, if possible.

Do you have the Firefox icon on your quick launch? Right click
on it, and select '''Open New Window.''' Sometimes this works.
If it opens, close it by '''Menu > File > Exit.'''
This is not a cure but will make it easier if Firefox locks up in Windows.
'''https://support.mozilla.org/questions/997866''' {web link}
Separate Issue;
Your System Details shows;
Installed Plug-ins
Shockwave Flash 16.0 r0
Shockwave Flash 11.8 r800
Having more than one version of a program may cause issues.
Grab the uninstaller from here:
'''[http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows]'''
'''[http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac]'''
Then reinstall the latest version.
Flash Player '''Version 16.0.0.305 https://www.adobe.com/products/flashplayer/distribution3.html'''
Shockwave Director '''Version 12.1.7.157 http://get.adobe.com/shockwave/'''

Firefox is not visibly running, but says 'cannot start as already running'. How do I stop it?

Firefox comes up with ' is already running....close and restart', but no visible firefox is running and even in task manager it is not running. How do I 'stop' firefox? Restarting the computer did not help
== This happened ==
Just once or twice
== User Agent ==
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

i have same prob but not just once or twice, regularly-at least once a day- and still does it after restart. it's diving me mad....arghh

Cannot open elements - already running?

When I try to open PSE 12, I receive an Elements Organizer error message stating that "PSE is already open but is not responding. To open a new instance, you must first close the existing elements process, or restart your system." There is nothing in the task manager.
When I last used PSE Organizer I selected File-Exit to leave the application. I do not want to have to reboot everytime I want to open PSE.

I am also having a similar problem. My desktop icon won't launch it, PSE 12.exe won't launch, but i did manage to open it under the Organizer.exe. But then it won't print and has to shut it down due to an error. When i try to open it again it wil tell me that i already have an instance running of PSE 12, so i kill it on the task manager, but each time i tried to open it will repeat the same problem. I have to reboot, then i can launch the organizer, but still won't print. I have uninstalled it and reinstalled it and it says that all of it didn't uninstall, however it reinstalls without any problems, still can't open it. Any other ideas?

I continue to get the 'Firefox is already running' statement, which requires me to reboot - very annoying. I go to IE and then get out but it still persists. What to do?

I tried Task manager to kill the 'already running' and it doesn't show up, so I have to reboot.

This does not address my problem. Firefox does not 'hang,' it states that another copy is already running, and that I should first close that copy, which isn't there to start with. Usually on the task bar you'll see one or more open windows tiled or tired behind each other. In this case, there are none; hence, there doesn't seem to be 'another' copy already opened - so I reboot.
After I wrote this thread a few days ago, I did find a work around, but this should not be necessary.
From the desktop, right click the Firefox Icon, then left click 'open,' just as you would if you simply left clicked the icon to start with, but this allows the shadow tab that is in 'theory' open to be bypassed.

Cannot reopen firefox, since it's already active. Cannot kill the process in taskmanager. Already uninstalled and removed all the programm files... same problem occurs?? Tried to change the profile etc... nothing works..

Cannot reopen firefox, since it's already active.... Cannot kill the process in taskmanager.
Already uninstalled and removed all the programm files... same problem occurs??
Tried to change the profile and all other actions I found on the support website etc... nothing works..
When I opened firefox some weblinks in pages I visited (for example the pop up of the calendar on the ryanair website did not work...)... This also happens in the ewplorer and google I use now...
Can anyone advise me in this? Many thanks?

Cannot reopen firefox, since it's already active.... Cannot kill the process in taskmanager.
Already uninstalled and removed all the programm files... same problem occurs??
Tried to change the profile and all other actions I found on the support website etc... nothing works..
When I opened firefox some weblinks in pages I visited (for example the pop up of the calendar on the ryanair website did not work...)... This also happens in the ewplorer and google I use now...
Can anyone advise me in this? Many thanks?

I have an issue that I cannot open Firefox, and I get the message "Firefox is already running..." and it says I need to close it or restart my computer.

There is a page on the support site that attempts to adress the issue...but it never says how to fix it. https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
Apparently there is a problem with the "profile", and on this support page, it has a link about working with the profile...if you go to that page, is tells you where the profile is, and the many things it does...but it does NOT say actually how to fix this problem. It tells you to go the the Help tab at the top of the browser, then select "Troubleshooting", and then under Profile, select "Open Containing folder"...which brings up the folder with all the files...but from there...it doesn't say what to do. I also have gone to the Start tab at the bottom of Windows (Windows XP--I've got Firefox 3.6.9) then Run and opened the profile box...but there are no instructions on what to do to fix the problem. I can open Firefox only by going to Crtl-Alt Delete and opening the process tab and ending the Firefox process...but this is not a fix. Help! thanks...

You need "sysinternal's process explorer", it is free and can replace the Microsoft process explorer, that you get by "CTRL+ALT+DELETE". Either program will allow you to kill the instances of FF that didn't die as they should have, when you closed them. Sysinternal is easier to use, it is a graphic display with many options. Do not push "CTRL+ALT+DELETE" twice unless you want to reboot, that is its default behaviour under Microsoft.

Firefox is already running but is not responding - Cannot run Firefox on multiple machines with in a network (parent.lock)

Environment - Single File Server & 6 workstations.
I have a single generic user account/profile and log on to all 6 workstations at the same time (1 user, 1 password, 6 workstations).
I need to run firefox on all the workstations with the same user and user profile.
However, as soon as one user opens firefox all the others get the message "Firefox is already running but is not responding" and can not open the browser. No other workstations can open Firefox. I can only run 1 instance of Firefox in this scenario. How can I run it on all 6 with a single user account?
I have been back to the server and deleted the parent.lock file but it is recreated again as soon as someone open a firefox browser and the problem starts al over again.
Please - How can I get a single user with a single profile to run firefox on 6 workstations simultaneously?
Thank You

hello timfarr, you cannot do that - many essential databases (like bookamrks, passwords etc.) in your profile are not designed to be accessed by different processes at the same time...

Lost files now cannot start firefox, told it is already running and cannot stop it.How can I reinstall while process is still running?

I may have deleted files that had firefox running. Cannot find them, they may have been duplicates. When trying to start firefox got message telling me firefox was already running and had to stop the process or restart pc. Tried that numerous times with no result.
Deleted and reinstall firefox several times and same thing happened.

You may have deleted the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] 
Use the Firefox profile manager to create a new profile.
See:
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
* http://kb.mozillazine.org/Recovering_a_missing_profile
* http://kb.mozillazine.org/Profile_in_use

Multiple instances of firefox running cannot kill in task manager "Access denied"

There's no issue with starting a new instance after closing one, the "firefox is already running" error is not occurring (ok maybe once or twice a month, but it's not related to this problem, as my problem happens all the time.)
Apparently when closing a ff window it never fully stops. My computer slows down because of it and these multiple instances of firefox show up in Task Manager. When I try to kill the extra processes it just goes "BANG" and the "access denied" error dialog box appears. They are all running under my user account, and in CPU some are just 10 or 25 and some are in the hundreds and some are over a million. what the heck is going on?
I'm running Windows 7 64 bit and ff 23.0 but this has been happening since about ff 15 (?)

When closing Firefox completely, it is important to close it using the Exit button, located inside of the Firefox/File menu.
Another cause to this problem could be a Firefox preloader. Do you have any programs that will load Firefox automatically? They are supposed to improve start time.
You can also '''try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* Open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Once you get the pop-up, just select "'Start in Safe Mode"''
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
I hope that one of my solutions helps to fix your problem. Please report back with updates soon.
NOTE: You are using an outdated version of Firefox. This can cause security and functionality issue. Please update to the most recent version as soon as possible.

I deleted the profile and firefox4 and then downloaded firefox4 again. But when i click firefox it says 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.HELP!

somehow i couldn't get rid of one website called www.searchqu.com/405 set as my homepage... I tried all solutions given to change the homepage but whenever i restarted firefox that homepage used to come automatically.. So, I deleted the profile (even from recycle bin!!) and deleted the firefox and downloaded it again hoping to get my problems fixed (which didn't happen!) because i'm getting dialog box saying- 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.

You don't say which operating system you have installed?
Assuming it's Windows, right click a blank part of the Windows Taskbar and go to Task Manager. Then click the ''Processes ''tab, find '''firefox.exe''' and then right click it and choose '''End Process'''.

Whenever I try to open it, I get something like "Firefox is already running". HOWEVER, when I check my profiles folder... it is empty!

Exact 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
This happened when I first booted up the computer (so I hadn't been running Firefox anyway).
I already tried:
-restarting and shutting off. This does not help. However, the system felt the need to run an error check on one of the restarts, which turned up nothing. This might indicate something.
-Opening task manager. firefox.exe does not appear in the processes list.
-Using the help file. None of it seems to help since the profiles folder is empty. I can't run profile manager either.
-uninstalling and reinstalling. I STILL GET THE SAME ERROR. Furthermore, the profiles folder is still empty!
I am currently running a virus scan, so far nothing. IE seems to be unaffected.
EDIT: Latest version of Malwarebytes has turned up no threats.

Well, if the profile folder is empty, either its contents are somewhere else and hopefully you can put them back where they belong, or you lost your profile info. I don't know how could happen, though...
In any case, see this support article to know about managing profiles:
http://support.mozilla.com/en-US/kb/Managing+profiles

I am unable to start Firefox. Getting message that it's already running. Can't find my profile using "%APPDATA%\Mozilla\Firefox\Profiles|". What do I need to do

I am unable to start Firefox. Getting message that it's already running. Can't find my profile using "%APPDATA%\Mozilla\Firefox\Profiles|". Rebooting my computer didn't help. Since I experienced that problem I also noticed that all my bookmarks which I had copied into the Windows Internet Explorer have also disappeared. I am using Firefox as my primary search engine and usually don't use Internet Explorer. I am running Windows 7 on my machine.

Try this add on [https://addons.mozilla.org/en-US/firefox/addon/open-profile-folder/ Open Profile Folder]

Accidentally deleted firefox "profiles.ini" and now says firefox is already running when I try to open it.

Accidentally deleted firefox "profiles.ini" and now says firefox is already running when I try to open it. "a copy of firefox is already open. only one copy of firefox can be open at one time. Now I'm aware this happens often and people have posted solutions to this, but this situation is slightly different. The "profiles" that possibly had parental lock on it were deleted and I don't know how to get it back. Re-downloading firefox obviously does nothing. Opening the task manager and to try and close all mozilla/firefox files and apps doesn't work either. Tried using Onyx to turn invisible files visible but that didn't work either. I think it's cause I deleted the profiles. Suggestions?

Any chance of restoring that profiles.ini file via the Time Machine?
*http://kb.mozillazine.org/profiles.ini_file
If not then you need to use the Profile Manager to re-register that no longer recognized profile. 
You do that by creating a new profile and use Choose Location to point the your lost profile.
*http://kb.mozillazine.org/Profile_in_use
*http://kb.mozillazine.org/Recovering_a_missing_profile

Cannot kill a session that is running a query on a linked server in SQL Server 2008 R2

Hi,
Cannot kill a session that is running a query on a linked server in SQL Server 2008 R2.
When I try to kill, it status shown as "KILLED/ROLLBACK"
I have facing the issue from long back. I searched many and none of them worked for me
Any help is greatly appreciated
Thanks
Jaison
Carver

I guess its stuck, can you see some blocking or any other process blocking the rollback.
can you check rollback status using below command. Or you can use sp_who2 and check status column
select percent_complete,estimated_completion_time from sys.dm_exec_requests
where spid=xxx
Please mark this reply as answer if it solved your issue or vote as helpful if it helped so that other forum members can benefit from it.
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CANNOT KILL an already running profile!

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