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.

all of a sudden I double click on Firefox and it does not do anything, when I try to re-install, it says it is already running, yet I have turned computer off

  • 1 reply
  • 1 has this problem
  • 5 views
  • Last reply by cor-el

jenmorrison
jenmorrison
more options

Firefox does not launch when I click on icon. when I try to reinstall through IE, it says it is already running. I have turned computer off 5 times

Firefox does not launch when I click on icon. when I try to reinstall through IE, it says it is already running. I have turned computer off 5 times

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Can you start Firefox in Safe Mode by holding down the Shift/Options key?

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to internet for Firefox and the plugin-container process and the updater process.

See:

Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

Download a fresh Firefox copy and save the file to the desktop.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.