"Firefox is already running but is not responding" fault - How to fix

All of your personal settings, bookmarks, and other information are kept in your Firefox profile. Firefox needs an unlocked contour 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 up . This article explains what to do if you lot see this message and how to prevent information technology from showing at startup.

FirefoxAlreadyOpen-Mac Fx34already-running-Win7

Table of Contents

  • 1 End Firefox processes
    • 1.one Ubuntu Linux
    • 1.two Employ the Windows Task Manager to shut the existing Firefox process
  • 2 Remove the profile lock file
  • three Remove the -no-remote startup pick
  • 4 Initialize the connection to a file share
  • 5 Cheque access rights
  • half-dozen Restore data from a locked profile

End Firefox processes

If Firefox did not shut downwards commonly when you final used it, Firefox might still be running in the background, fifty-fifty though it is not visible. If y'all try to open it while it's running, an fault message will appear with the selection to click Close Firefox. If that doesn't solve the problem, restart your calculator or endeavor the post-obit options. Restart your reckoner to see if the problem goes abroad or try the following options.

Ubuntu Linux

  1. Click on and cull .
  2. In Administration, click on . Hither you will find firefox-bin one or more times.
  3. Highlight the listing and click Terminate Procedure for each one.

Use the Windows Task Manager to close the existing Firefox process

  1. Correct-click on an empty spot in the Windows task bar and select (or press Ctrl+Shift+Esc).
  2. When the Windows Task Manager opens, select the tab.
    Windows Task Manager
  3. Select the entry for firefox.exe (press F on the keyboard to detect it) and click End Procedure.
  4. Click Yep in the "Job Manager Warning" dialog that appears.
  5. Repeat the to a higher place steps to end all additional firefox.exe processes, so exit the Windows Task Director.
  6. Start Firefox normally.

Remove the profile lock file

Firefox may have shut downwards abnormally, leaving the lock file in place. To fix this, open the profile folder (run across 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 y'all start Firefox with th-eastward -no-remote command line option, try removing this option.

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

Check admission rights

Firefox must also have the right to create files in the profile binder. The error can occur if y'all effort to use a profile from a file organization mounted with read-only permission (e.m. a remote Windows share which doesn't have "Let network users to change my files" checked).

To check if the profile folder has the proper permissions:

  1. Observe your Firefox profile folder - see Finding your profile without opening Firefox.
    • If you lot only have ane contour, its folder would take "default" in the proper name.
  2. Right-click on your contour folder and select .
  3. Click on the tab.
    readonlyprofile.png
  4. Make sure Read-simply is not checked marked.
  1. Find your Firefox profile binder - see Finding your profile without opening Firefox.
    • If yous only have one profile, its binder would have "default" in the name
  2. Hold down the Ctrl primal while you click on your profile folder, and select .
  3. Brand certain Ownership & Permissions is set up to Read & Write.
  1. Observe your Firefox profile folder - run into Finding your profile without opening Firefox
    • If you lot only have one profile, its folder would have "default" in the proper name.
  2. Right-click on your contour folder and select .
  3. Click on the tab.
  4. Make certain Folder access is prepare to Create and delete files.

Restore data from a locked contour

If you are unable to unlock the profile using the to a higher place methods, employ the Contour Managing director to create a new profile and migrate your data from the locked profile to the new profile. For information on how to do this, come across Recovering important data from an old profile.

These fine people helped write this article:

AliceWyman, philipp, Underpass, Tonnes, Michael Verdi, scoobidiver, John99, Swarnava Sengupta, mluna, ideato, jbnewby67, user917725, Lan, Joni, Artist

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