Firefox linux firefox is already running

«Firefox is already running but is not responding» error — How to fix

All of your personal settings, bookmarks, and other information are kept in your Firefox profile. Firefox needs an unlocked profile to start up, and if the profile is locked, it displays the message, Firefox is already running, but is not responding A copy of Firefox is already open . This article explains what to do if you see this message and how to prevent it from showing at startup.

Table of Contents

End Firefox processes

If Firefox did not shut down normally when you last used it, Firefox might still be running in the background, even though it is not visible. If you try to open it while it’s running, an error message will appear with the option to click Close Firefox . If that doesn’t solve the problem, restart your computer or try the following options. Restart your computer to see if the problem goes away or try the following options.

Ubuntu Linux

1. Click on System and choose Administration .
2. In Administration, click on System Monitor . Here you will find firefox-bin one or more times.
3. Highlight the listing and click End Process for each one.

Use the Windows Task Manager to close the existing Firefox process

1. Right-click on an empty spot in the Windows task bar and select Task Manager (or press Ctrl + Shift + Esc ).
2. When the Windows Task Manager opens, select the Processes tab.
3. Select the entry for firefox.exe (press F on the keyboard to find it) and click End Process .
4. Click Yes in the «Task Manager Warning» dialog that appears.
5. Repeat the above steps to end all additional firefox.exe processes, then exit the Windows Task Manager.
6. Start Firefox normally.

Remove the profile lock file

Firefox may have shut down abnormally, leaving the lock file in place. To fix this, open the profile folder (see Finding your profile without opening Firefox) and delete the parent.lock file lock and .parentlock files .parentlock file .

Remove the -no-remote startup option

If you start Firefox with the -no-remote command line option, try removing this option.

Initialize the connection to a file share

If you store the profile on a file share, try accessing the file share beforehand using Windows Explorer.

Check access rights

Firefox must also have the right to create files in the profile folder. The error can occur if you try to use a profile from a file system mounted with read-only permission (e.g. a remote Windows share which doesn’t have «Allow network users to change my files» checked).

To check if the profile folder has the proper permissions:

1. Find your Firefox profile folder — see Finding your profile without opening Firefox.
   • If you only have one profile, its folder would have «default» in the name.
2. Right-click on your profile folder and select Properties .
3. Click on the General tab.
4. Make sure Read-only is not checked marked.

1. Find your Firefox profile folder — see Finding your profile without opening Firefox.
   • If you only have one profile, its folder would have «default» in the name
2. Hold down the Ctrl key while you click on your profile folder, and select Get Info .
3. Make sure Ownership & Permissions is set to Read & Write.

1. Find your Firefox profile folder — see Finding your profile without opening Firefox
   • If you only have one profile, its folder would have «default» in the name.
2. Right-click on your profile folder and select Properties .
3. Click on the Permissions tab.
4. Make sure Folder access is set to Create and delete files.

Restore data from a locked profile

If you are unable to unlock the profile using the above methods, use the Profile Manager to create a new profile and migrate your data from the locked profile to the new profile. For information on how to do this, see Recovering important data from an old profile.

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Исправлена ​​проблема «Firefox уже запущен» в Linux

Я пытаюсь открыть Firefox в CentOS, но получаю следующее сообщение:

Firefox уже запущен, но не отвечает

и Firefox не открывается. Я попробовал это в командной строке:

но это не сработало. Кроме того, я не знаю, в каком каталоге я должен выполнять правильные команды.

Как я могу это исправить?

1) файл с именем .parentlock
-AND-
2) символическая ссылка с именем lock
. в

/ .mozilla / firefox / случайная строка буквенно-цифровых символов .default /

Первый присутствует во время работы Firefox, чтобы предотвратить одновременную запись более одного экземпляра в один и тот же набор файлов профиля, и если Firefox не закрывается чисто, ни один из них не может быть удален.

Сообщение об ошибке, полученное в этом случае, должно быть:

Из любой точки файловой системы (или удалив это, если в pwd отчетах ), заменив случайную строку буквенно-цифровых символов на папку профиля FF на вашем компьютере, выполните (при условии, что первое предложение выполнено), чтобы удалить их, если не запущен процесс Firefox. ,

/.mozilla/firefox/random string of alphanumeric characters.default rm

/.mozilla/firefox/random string of alphanumeric characters.default/.parentlock

/.mozilla/firefox/random string of alphanumeric characters.default/lock`

Более менее авторитетная информация здесь .

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Firefox linux firefox is already running

Hello, I got this issue where I’m logged into more then on computer at a time. If I have Firefox running on one computer I’m prevented from running Firefox on anther computer. This because my user account has its home directory mounted across all the computers. It appears that the lock file is preventing from running Firefox on the 2nd computer. What I have been doing is deleting the lock file in my home directory. Then I’m able to start Firefox on the 2nd computer. Is there a better way of doing this? Is there away to disable the use of the lock file? Now I could just exit out of Firefox on the 1st computer but what if I’m running a web app on the 1st computer. What if you are using a shared admin account to such as root or using a RBAC profile. If user1 is using Firefox after become root or assuming a role, then no other user can use Firefox as root or using that role. That makes it very hard to use Firefox then. Anyway this is mostly a UNIX/Linux question.

Chosen solution

Hello, I thought I should update this post with the answer.

In order to get around the lock file. You can delete it or use profiles. If your running Firefox from a UNIX, BSD or Linux based OS. To get to the profile popup window use the -p option.

Which will look like the image below.

To get the popup all the time uncheck the «Don’t ask at startup»

If you don’t have a GUI running then you can do this.

firefox -CreateProfile profilename

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Firefox linux firefox is already running

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If Firefox is running, applications can’t open a browser window (FIREFOX IS ALREADY RUNNING. error) CENTOS7 Firefox 38.5.0

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I am running CENTOS 7 with all updates, so FIREFOX is version 38.5.0

Since last update I can’t open a browser window from an application, when I am already running firefox. This worked before without any problems.

Error message: Firefox is already running, but is not responding. To open a new window, you must firest close the existing Firefox process, or restart your system.

Chosen solution

You can use the -no-remote command line switch instead of the environment variable if you need to start another instance with a separate profile.

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Firefox linux firefox is already running

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1. Home
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I keep having to restart my computer (linux-Ubuntu) because I cannot open firefox because it say it is already open and running firefox bin

• 13 replies
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• 164 views
• Last reply by DonRay

I am running ubuntu os and everytime I try and open firefox to connect to the internet it will not allow me to because firefox bin is still running even though firefox is not running. I have to restart my computer to be able to connect and if I log out of firefox, the bin is still running, this has only started to happen this week, is it due to an update that doesn’t work properly and are you fixing it.

Chosen solution

same here, killed the proces did work as a workaround but eventually deleted the lock and .parentlock file from the .mozilla/firefox/(insert).default folder

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