We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.When I restart the system this message reappears when I open firefox Every time .

  • 7 பதிலளிப்புகள்
  • 939 இந்த பிரச்னைகள் உள்ளது
  • 1 view
  • Last reply by SteelyDanFan

I have logged off and Logged back on . I've clicked on turn off computer in the start menu , and restarted the computer . I've click the turnoff computer in the start menu and turned off the computer . I've gone to a restore computer point, and there have been no changes to the computer . I've turned off my modem and restarted it . After shutting everything down I have turned off the power strip and power to all components . I have restarted them in the sequence of Internet modem , monitor, CPU . Since this time I have not turned on my speakers for my printer

I have logged off and Logged back on . I've clicked on turn off computer in the start menu , and restarted the computer . I've click the turnoff computer in the start menu and turned off the computer . I've gone to a restore computer point, and there have been no changes to the computer . I've turned off my modem and restarted it . After shutting everything down I have turned off the power strip and power to all components . I have restarted them in the sequence of Internet modem , monitor, CPU . Since this time I have not turned on my speakers for my printer

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Create a new profile as a test to check if your current profile is causing the problems

See Basic Troubleshooting: Make a new profile

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)

See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Read this answer in context 👍 7

All Replies (7)

There are several possible causes for that error message, for details see "Firefox is already running but is not responding" error - How to fix.

I have gone to the link that you supplied . In the task manager-- ending the entry for Firefox.exec did not resolve the problem. I located my profile in the start menu In the run tab And entered %APPDATA%\Mozilla\Firefox\Profiles\as instructed. I received a cannot delete parent file is corrupted or unreadable. I then ran the Chkdsk (check disk )and tried the process again with no improvement . I have uninstalled Firefox, and redownloaded It. Still no improvement. I want my Firefox WHAAAAAAA

If you are getting an error message from Windows about not being able to delete a file, there are some utilities that may help. See http://www.thefreecountry.com/utilities/deletelockedfiles.shtml

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Create a new profile as a test to check if your current profile is causing the problems

See Basic Troubleshooting: Make a new profile

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)

See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Current profile was causing the problem I've opened a new one and now I am able to enter firefox. I am somewhat lost on how to retrieve my old profile and put it on my new profile help

After scratching my head I figured out how to copy the files that weren't corrupted and move them as a block to my User profile . I hovered over the first file /shift /to the last file . Right click /copy , up one folder to the parent folder which held both profiles . Hovered over the new profile and clicked paste . Prompts said replace existing files I clicked yes to all until it stopped at a corrupted file and prompted me that that file was corrupted . I went back and blocked everything from the first to the file before the corrupted one pasted them in the new profile . I repeated this process until all of the corrupted files were bypassed and all of the usable files were transferred to my new profile .

Thank you for all your help , I was losing what hair I had left scratching my head trying to figure out how to fix this (on the upside my butt enjoyed a vacation)

After a few hours of checking my profile, copying profiles.ini, editing profiles.ini, backing up my profile folder, etc., etc., etc. I found a very simple but effective solution. I completely uninstalled Firefox . Only this time when the Firefox uninstall dialog box popped up I checked the option "Remove my Firefox personal data and customizations". I then completely shut down and restarted. Then reinstalled Firefox, and thereby creating an entirely new profile from scratch.

The upside again was a simple and effective solution. The down side is I have had to recreate my Favorites, reinstall my add-ons, etc., but overall I am happily up and running seamlessly with Firefox again.