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Why do I get error message "The URL is not valid and cannot be loaded" when everything looks OK?

Posted

This message pops up while using programs like yahoo mail. I delete it and everything continues as normal.

Additional System Details

Sites Affected

http://

Installed Plug-ins

  • Default Plug-in
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.0"
  • 6.0.12.775
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • BrowserPlus -- Improve your browser! -- http://browserplus.yahoo.com/
  • Shockwave Flash 10.0 r45
  • Adobe Shockwave for Director Netscape plug-in, version 11.5
  • GEPlugin
  • Picasa plugin
  • Next Generation Java Plug-in 1.6.0_22 for Mozilla browsers
  • 4.0.50917.0
  • NPWLPG
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Google Update

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 GTB7.1

More Information

cor-el
  • Top 10 Contributor
  • Moderator
10756 solutions 96800 answers

Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Troubleshoot Firefox issues using Safe Mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")