How to fix firefox is already running but not responding ?

This error occurs when Firefox is closed but is still running in the background. Firefox is either in the process of closing or is frozen and hasn’t quit properly. In rare situations, there may be a problem with your profile.

Steps to fix this issue :

Wait a Few Seconds :

If you’ve just closed all your Firefox windows and quickly tried to open a new one, you may see this message. This is because Firefox is still running in the background, doing housekeeping tasks and saving your data before quitting completely. If you wait a few seconds and try launching Firefox again, you may find that it opens properly.

End Firefox.exe in the Task Manager :

If waiting a few seconds didn’t help, then Firefox has failed to quit properly. While all Firefox windows may be closed, Firefox itself is still running in the background. It may be frozen and using no system resources or it may be chewing up your available CPU time.

Luckily, ending Firefox in the Task Manager is simple. First, open the Task Manager by pressing Ctrl+Shift+Escape. You can also right-click your taskbar and select Task Manager.

Firefox won’t appear in the list of running applications because this list only shows applications with open windows. No problem – just click the Processes tab.

Type the letter f and you should instantly jump to the firefox.exe process. You can also click the Image Name header to sort the process list alphabetically and locate firefox.exe.

Once you’ve located firefox.exe, select it and click the End Process button.

This is what the message means when it asks you to “close the existing Firefox process.”

Restart Your Computer :

Restarting your computer is the nuclear option and, quite frankly, isn’t a very good idea. If you encounter this error, you can always fix it without restarting your computer.

The “restart your computer” suggestion is for less-experienced users that may not want to deal with the Task Manager – restarting your computer works because it ends all the processes on your computer, including firefox.exe.

Call  +1-856-514-8666 for more help and support to  fix firefox is already running but not responding.

Fix firefox is already running but not responding

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. This article explains what to do if you see this message and how to prevent it from showing at startup.

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.

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 any additional firefox.exe process, if more than one entry             is found, then exit the Windows Task Manager.

     6. Start Firefox normally.

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. Go to your Firefox profile folder.
2. Go up one folder.
3. Right-click on your profile folder and select Properties.
4. Click on the General tab.
5. Make sure Read-only is not checked marked.

If still issue is not resolved Call  +1-856-514-8666 for more help and support to 

fix firefox is already running but not responding.