If Firefox still won’t start, try creating a new profile in the Profile Manager and launching the application under that profile. $ rm /home/linuxconfig/.mozilla/firefox/fault-release/profile.lock

To locate it and determine if it exists on your system, use the find command. If Firefox has shut down abnormally, the profile lock file can be left behind from a previous session and cause errors when starting Firefox again. Launch Firefox in safe mode from terminal by executing this command. If a browser extension or bad setting is causing problems, launching Firefox in safe mode should allow you to access the application and fix the problem before opening it again normally. Rather than killing off these processes one by one, you can use the following kill command to terminate all of them at once.

To see the processes associated with Firefox, you could use the following command. To kill a process on Linux, you’ll need to open a command line terminal on your system. As we stated earlier, sometimes applications will freeze or hang, and this isn’t necessarily abnormal if it doesn’t happen often.

The first thing you should try to do is simply kill the Firefox process and open it back up. $ – requires given linux commands to be executed as a regular non-privileged user # – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command Privileged access to your Linux system as root or via the sudo command. Requirements, Conventions or Software Version Used How to fix “Firefox is already running but is not responding” error messageįixing an unresponsive Mozilla Firefox on Linux Software Requirements and Linux Command Line Conventions Category.If you’re experiencing this error often, it can be helpful to create a brand new profile and import your old settings.įollow along with our step by step guide below in order to fix this annoying error and get your web browser running smoothly again. Firefox stores a user’s personalizations and settings inside a “profile” that is accessed every time Firefox opens. On the other hand, the problem has been known to become perpetual in situations where there’s an issue with the profile file. It’s not uncommon to have an application freeze or “hang” every once in a while, so if this isn’t an issue that you repeatedly have with Firefox, you can probably simply kill the process and get back to what you were doing.

In this guide, we’ll show you a few different methods for fixing the Firefox is already running but is not responding error message on a Linux system.įirst, let’s go over a few reasons for why this error may be occurring.

Why mozilla firefox not responding