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Firefox will not open


Firefox opens a icon on the task bar but will not open a page

Additional System Details

This happened

Every time Firefox opened

This started when...

tonight 31 Oct 2012

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 11.4 r402
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • Next Generation Java Plug-in 10.9.2 for Mozilla browsers
  • 1.138.0
  • Google Update
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • 1.132.0
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • VLC media player Web Plugin 2.0.2
  • 5.1.10411.0
  • 0.70.4
  • Plug-in for detecting Nero Kwik Media.
  • DivX VOD Helper Plug-in
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers


  • User Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

  • Top 10 Contributor
  • Moderator
10753 solutions 96760 answers

A possible cause is security software (firewall,anti-virus) that 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.


Question owner

I Posted this for a Mate, The problem is now solved. He had to use the shortcut ( Win Logo + Direction Up key ) to expand Firefox from the Icon on the Task Bar. He verified the Properties screen resolution was set to Maximze before. We checked everyone's lisr for a possible solution, Thanks for the Support Mozilla and Members ^_^

Mirrabook 0 solutions 5 answers

Hi, I am having a problem with firefox opening. I have the icon on my toolbar, but when I click to open, It highlights and gets the little whirly thing which is indicative of it going to open but it quickly stops and nothing happens. I tried rebooting, nothing happened. I reinstalled began working - left computer on went to bed, not working. Took to my computer tech, who uninstalled and then reinstalled the latest version - brought computer home hooked it all up and working, been away today, daughter used firefox to access facebook and had no problems, I came home and now again not working. Computer Tech fella, will look at it again but suggested that I post problem in here and see if there is something with the latest update - as when I get update notices I usually do the upgrade. Any suggestions. I am not new to firefox have had it for several years and this is the first weird problem that I have had.