Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Not starting second time

  • 2 replies
  • 1 has this problem
  • 7 views
  • Last reply by njsw1

njsw1
njsw1
more options

On windows 7 64bit firefox always starts fine first time after machine switch-on but recently (~ last 6 months since v65) restarting firefox a second time often (not always) causes nothing to appear on screen but task manager shows that it is running in the background. Today I tried restarting firefox in safe mode (after it exhibited the above behaviour and shutting it down in task manager) and it restarted fine. I then tried restarting firefox in normal mode and it again started ok. I've tried refreshing and reinstalling firefox, turned about:config/browser/tabs.remote.autostart to false but this is still happening intermittently. AdBlockPlus is the only extension installed, shockwave flash the only plugin.

On windows 7 64bit firefox always starts fine first time after machine switch-on but recently (~ last 6 months since v65) restarting firefox a second time often (not always) causes nothing to appear on screen but task manager shows that it is running in the background. Today I tried restarting firefox in safe mode (after it exhibited the above behaviour and shutting it down in task manager) and it restarted fine. I then tried restarting firefox in normal mode and it again started ok. I've tried refreshing and reinstalling firefox, turned about:config/browser/tabs.remote.autostart to false but this is still happening intermittently. AdBlockPlus is the only extension installed, shockwave flash the only plugin.

All Replies (2)

Wesley Branton
Wesley Branton
more options

Do you still have the issue if you manually disable AdBlockPlus?

Usually, when an issue doesn't occur in Safe Mode, it's a clear indicator that the problem is caused by an installed extension.

The only other causes of the issue that I can think of would be a theme you have installed on Firefox or hardware acceleration, both of which are disabled in Safe Mode.

Hope this helps.

njsw1
njsw1 Question owner
more options

I've disabled AdBlock Plus and so far so good. Hardware acceleration and multiprocessing are turned off and the theme 'Mountain Belledonne France' seems ok. I'll report back if the problem persists. Thanks for your help...