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

I have tried to start Firefox but all I get is the error message below

  • 6 பதிலளிப்புகள்
  • 64 இந்த பிரச்னைகள் உள்ளது
  • 5 views
  • Last reply by cor-el

I have tried to start Firefox but all I get is the message below:

"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".

I have reinstalled Firefox and restarted my PC but I STILL get this message.

I have checked in Windows Task Manager but Firefox is NOT listed as a running process.

Have you any suggestions please?

I have tried to start Firefox but all I get is the message below: "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". I have reinstalled Firefox and restarted my PC but I STILL get this message. I have checked in Windows Task Manager but Firefox is NOT listed as a running process. Have you any suggestions please?

தீர்வு தேர்ந்தெடுக்கப்பட்டது

There are a few possible causes for this, full details are in the "Firefox is already running but is not responding" error - How to fix article.

Read this answer in context 👍 0

All Replies (6)

தீர்வு தேர்ந்தெடுக்கப்பட்டது

There are a few possible causes for this, full details are in the "Firefox is already running but is not responding" error - How to fix article.

Thanks TonyE, after changing my Profile, I am now able to start Firefox again. 8-) However, do you have any ideas how I can retrieve my Bookmarks? (Grrrrrh, I didn't back them up manually, are they auto backed up, do you know?) Cheers Muggins aka Chris 8-(

You can recover data from the old profile, see Transferring data to a new profile.

Thanks again TonyE for being patient with me when I should have RTFM! I have followed the procedure and got most of my data back. Thanks again, Cheers Chris 8-)

OK i tried all things,restart, uninstall, taskmanager, new download, Delete folder, Delete all fifefox,checking profile, and even after each one of them and reistalling I still get same message? Firefox also does not like facebook, always crashing durring it.

You do still have a Firefox Profile Folder ?

If all Firefox profile folders are removed but there is still a file profiles.ini that links to a non-existing profile then you get the same error message.

See also "Hang at exit":