The last update cannot be updated because another version is open. But I don't see anywhere.

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

This has happened

Each time Firefox opened

is 23/06/10

Find the Firefox profile folder

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

In this case a Firefox running updates file "parent.lock". Mere presence of this file to implement the illusion that other Firefox Firefox is already running. So delete this file.

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

This help you?

Error message "Firefox is already running but is not responding" - how to fix

Tags: Firefox

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