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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

When I reopen my laptop & start FF, it says Firefox is already and I must close or restart. It is not running according to task manager

  • 3 replies
  • 1 has this problem
  • 5 views
  • Last reply by TXGuy

AnonymousUser
AnonymousUser
more options

When I re-open my laptop from the sleep mode, (windows 7), Outlook is the only open program, I try to open FF and I get the message it is already open & I must either close FF or re-start the computer. Task manager says FF is not running, so I have to re-start the computer to use FF after each time I just close the laptop and later re-open.

This happened

Every time Firefox opened

== 1st of July, (I think)

When I re-open my laptop from the sleep mode, (windows 7), Outlook is the only open program, I try to open FF and I get the message it is already open & I must either close FF or re-start the computer. Task manager says FF is not running, so I have to re-start the computer to use FF after each time I just close the laptop and later re-open. == This happened == Every time Firefox opened == 1st of July, (I think)

All Replies (3)

TXGuy
TXGuy
more options

Kill Application In Task Manager, does firefox.exe show in the Processes tab? See: Kill Application

Causes and solutions for Firefox hanging at exit: Firefox hangs or is not responding - How to fix Firefox hangs at exit "Firefox is already running but is not responding" error - How to fix

Safe Mode You may need to use Diagnose Firefox issues using Troubleshoot Mode (click on "Safe Mode" and read) to localize the problem. Firefox Safe Mode is a diagnostic mode that disables Extensions and some other features of Firefox. If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes before starting Safe Mode. When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode". Test to see if the problem you are experiencing is corrected.

See: Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems Troubleshoot and diagnose Firefox problems

If the problem does not occur in Safe-mode then disable all of your Extensions and Plug-ins and then try to find which is causing it by enabling one at a time until the problem reappears. You MUST close and restart Firefox after EACH change via File > Restart Firefox (on Mac: Firefox > Quit). You can use "Disable all add-ons" on the Safe mode start window.

AnonymousUser
AnonymousUser Question owner
more options

I have not checked the process tab in Task Manager, (didn't know I had to do that). What do I do if I find firefox in the processes tab? How do you start Firefox in SAFE mode?

Thank you for your help with this

Joe

the-edmeister
the-edmeister
  • Moderator
more options

Explained in these articles, that TXGuy linked. 1. http://kb.mozillazine.org/Kill_application 2. https://support.mozilla.com/en-US/kb/Safe+Mode