Comments on: How to fix “Firefox is already running” error

By: Tim

Tim — Mon, 28 Dec 2009 09:41:09 +0000

hello
i get every time when i start firefox or msn i get a error
i have installed again but its stay the same the error is :

can entrypoint from procedure_except_handler4_common not find in dll-file msvcrt.dll

i download allready a new .dll but not working.

please can somebody help me.

Thanks
Tim

By: Patricia Rodela

Patricia Rodela — Thu, 17 Dec 2009 13:59:49 +0000

I have 2 accounts on my PC. When I go to the other account I close Firefox on the one I’m leaving. The problem is when I go to the other account and open Firefox and try to update my Add-ons I keep getting the error message that, “The update could not be installed. Please make sure that there are no other copies of Firefox running on your computer, and than restart Firefox to try again.”

I get the same error message when I try to update my Add-ons on my other account, too.
This is a fairly new problem.

Thank you, Patricia Rodela

By: sohbet

sohbet — Fri, 11 Dec 2009 14:57:47 +0000

thnxxx

By: Alex J Rodgers

Alex J Rodgers — Thu, 19 Nov 2009 19:51:27 +0000

I found that to bypass the error, not fix was to create a .bat file. It’s this exactly:

taskkill /im firefox.exe
START firefox.exe

Since you usually close firefox manually you don’t need to worry about accidentally pressing the button. This just prevents the Firefox is still running by beating it to the finish line. First it ends the FireFox process, and then 2 Seconds later it starts firefox up.

By: dick wicks

dick wicks — Thu, 24 Sep 2009 01:07:44 +0000

why should i have to go throught all this stuff which I do not understand to use a browser that is supposed to be better than IE. I don’t have time for this crap. It makes me want to give in and just use the damn IE.

By: Phil

Phil — Mon, 14 Sep 2009 19:44:02 +0000

I fixed firefox by uninstalling zone alarm and using comodo firewall

By: rich

rich — Mon, 03 Aug 2009 18:22:17 +0000

as root copied the entire /root/.mozilla directory in over the .mozilla directory for the user w/ the issue. Updated permissions and ownership….all better

By: Kudos

Kudos — Sun, 12 Apr 2009 15:04:20 +0000

I had the same problem, but had been running my main profile using the -no-remote switch. To be able to run links from external programs (e.g., double clicking a link in an email client), the -no-remote switch has to be removed. Mozilla’s documentation states that it should never be run for the default profile (which it would seem also applies to whatever profile you use most of the time). (This documentation was mentioned in the original article above and may be found here: http://kb.mozillazine.org/Profile_in_use)

For the record, I removed the switch and everything works like a charm now.

By: Srikanth Eswaran

Srikanth Eswaran — Tue, 03 Mar 2009 08:52:51 +0000

Jonathan,

Thanks, that circumvented the current problem on hand of mozilla not starting up.! I use fC 6 and the problem is resolved.

Srikanth.

By: Javaman59

Javaman59 — Mon, 02 Mar 2009 22:53:21 +0000

I had the problem (frequently) with Vista.

Rebooting always fixed it, but I’d had enough, and wanted to fix it without rebooting.

I found the parent.lock file in C:\Users\\AppData\Roaming\Mozilla\Firefox\Profiles\, and tried to delete it. Windows prevents it, saying that it’s in use (even though Firefox is not in the task manager).

So I opened up a DOS shell, cd’d to C:\Program Files\Mozilla Firefox\ and ran “firefox.exe -profilemanager”.

I created a new profile, and used the browser (in the wizard) to make it point to the old profile. No dice – it still thinks the “parent.lock” is in use.

This worked:

– I used Explorer to copy the profile folder, within the Profiles folder. Windows doesn’t copy the “parent.lock”, and another file, because they are “in use”. Rename the new folder to “new.default”
- Run “firefox.exe -profilemanager”
- rename the old profile to “profile.save”
- create a new profile, call it “default”
- When the wizard asks for a profile folder, browse to the copied folder, ie. “new.default”
- Run Firefox!