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.

FF works on startup but will not open after closing until I reboot.

  • 1 reply
  • 3 have this problem
  • 1 view
  • Last reply by FredMcD

Ronnomad
Ronnomad
more options

Until today everything okay. This evening tried to re-open Firefox and it would not. Rebooted computer & Firefox opened OK but after I closed it an tried to reopen, it would not start. Now it appears that Firefox will only open on a fresh restart of my computer. Running W-7 64 bit.

Until today everything okay. This evening tried to re-open Firefox and it would not. Rebooted computer & Firefox opened OK but after I closed it an tried to reopen, it would not start. Now it appears that Firefox will only open on a fresh restart of my computer. Running W-7 64 bit.

All Replies (1)

FredMcD
FredMcD
more options

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.

Start Firefox in Safe Mode {web Link} by holding down the <Shift (Mac Options) > key, and then starting Firefox. Is the problem still there?