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Firefox stops loading videos


I am running Firefox 11.0 on Windows 7 64 bit. I am having a problem where firefox will stop loading video halfway through. It doesn't matter what site it is. Netflix, Hulu, Youtube, whatever. I have tried restarting with add-ons disabled and in safe mode, all my plugins are up to date and I have cleared all my cookies and restarted my computer, nothing works. Does anyone have any ideas?

Additional System Details

Sites Affected


Installed Plug-ins

  • Shockwave Flash 11.2 r202
  • Next Generation Java Plug-in 1.6.0_31 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.3
  • iTunes Detector Plug-in
  • VLC media player Web Plugin 2.0.0-rc
  • Adobe Shockwave for Director Netscape plug-in, version
  • 5.0.61118.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • 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 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0

More Information

Firefox 11.0
Windows 7 64 bit

  • Top 10 Contributor
  • Moderator
10751 solutions 96760 answers

Make sure that you allow the plugin-container process in the firewall.

See also:

Question owner

Plugin Container is allowed through the firewall.

  • Top 10 Contributor
  • Moderator
10751 solutions 96760 answers

Did you check your security software (firewall, anti-virus software) ?

Question owner

Yes, both windows firewall and Avast firewall have the exception.