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The latest update can't update because another version is open. But I can't see this anywhere.

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Grand Master Contributor

The latest update can't update because another version is open. But I can't see this anywhere.

The following message came up: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again. There are no other Firefox running that I can see. What can I do to close Firefox if it is running and I can't see it?

This happened

Every time Firefox opened

== 6/23/10

1 ACCEPTED SOLUTION

Accepted Solutions
Regular Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

Find Firefox profile folder

%APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\

In this folder a running Firefox puts file "parent.lock". Mere presence of this file will put Firefox into illusion that another Firefox is already running. So delete this file.

Usually Firefox deletes the file itself. But if the Firefox exited in unusual way (was killed/crashed), it may forget to delete this file. So delete it manually, and try again.

Does it help you?

"Firefox is already running but is not responding" error message - How to fix it

11 REPLIES
Regular Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

What about looking in Task Manager->Processes for firefox.exe and killing it by pressing button "End Process"?

There should be at least two processes, I assume: one visible and trying to update and one invisible preventing him. Kill them all, and then start Firefox and try to update again.

Does it help you?

Grand Master Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

No 'Wikiwide'... That's the problem...

The Task manager keeps on telling me (us) that there are no processes running and Firefox is comming up over and over again with the same message (see discription above).

It is not possible to use 'Firefox' anymore...

Regular Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

Find Firefox profile folder

%APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\

In this folder a running Firefox puts file "parent.lock". Mere presence of this file will put Firefox into illusion that another Firefox is already running. So delete this file.

Usually Firefox deletes the file itself. But if the Firefox exited in unusual way (was killed/crashed), it may forget to delete this file. So delete it manually, and try again.

Does it help you?

"Firefox is already running but is not responding" error message - How to fix it

Site Moderator

Re: The latest update can't update because another version is open. But I can't see this anywhere.

See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:

XP:
C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
C:\Program Files\Mozilla Firefox\updates
.....
Vista/Windows7:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates
C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox\updates

New Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

I tried to find %APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\ in order to delete the "parent.lock" but my search of C drive found no results. How can I find this folder?

New Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

I tried to find %APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\ in order to delete the "parent.lock" but my search of C drive found no results. How do I find this folder?

New Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

I also found the file SOURCE DIRECTORY C:\Users\Eric Shrode\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates\0 which had a lot of files but no way to delete them.

I do know that if I just click on cancel the failed update then I can still get to Firefox but it's a pain. Perhaps time to go back to MS Explorer

Site Moderator

Re: The latest update can't update because another version is open. But I can't see this anywhere.

You can either delete the full update or update\0 folder to remove the already downloaded update or you can try to run Firefox once as Administrator to see if that allows the updater to apply the update.

If you fail to update Firefox then make sure that the updates folder is empty and then download a full version of the Firefox installer (http://www.mozilla.com/firefox/all.html) to update to the current Firefox release.

New Contributor

Re: The latest update can't update because another version is open. But I can't see this anywhere.

I must admit I only use Windows 7 when helping one of my sons... I'm sticking with XP for a while longer <VBG>. Using the XP routine-The parentlock file is found by opening C:\Documents and Settings\*whatever you named yourself as the administrator\Application Data\Mozilla\Firefox\Profiles\*a folder named something like ZX90oppp\. The parentlock file is not in the sub-folders, but in the main Profile files. BTW, be sure Firefox is indeed closed before doing this. Otherwise, you'll be told "a program is using this file and you cannot delete it." Hope this helps....