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If I hibernate Windows and resume Firefox doesn't find web pages until i go to options, network, settings, and change the way it finds proxies and back


I usually hibernate windows and then resume each day. If a Firefox session is open it can no longer connect after I resume. I have found that if I go to Tools --> Options --> Network --> Settings and change the proxy setting to "use system proxy settings" and apply and then do exactly the same thing but instead pick "auto-detect proxy settings" and apply, then Firefox works. So it seems like Firefox in some ways remembers the old proxy settings but they changed from when I hibernated to when I resumed and Firefox can't figure this out without my help. Other browsers don't have this problem, so it seems like a bug in Firefox. Am I missing something here?

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.10.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.5
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • iTunes Detector Plug-in
  • Microsoft Lync 2010 Meeting Join Plug-in
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • 5.1.10411.0
  • Shockwave Flash 11.1 r102
  • BlackBerry WebSL Browser 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:17.0) Gecko/20100101 Firefox/17.0

More Information

Windows 7 Build 7601
Firefox 17.0.1
Dell Latitude E4310

Tyler Downer
  • Administrator
  • Moderator
1165 solutions 6639 answers

Please update to 18.0.1, we've improved proxy support in the latest version.

Question owner

Many thanks. I will try it and let you know. I won't know until tomorrow. I have to hibernate here and un hibernate later, which in this case will be tomorrow.