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Firefox gave me "URL not valid & cannot be loaded" on SOME common sites. Tried clearing cache & cookies; no help. ALSO just checked using IE browser, and it would not load that site. Bank still works; shopping still works... what gives?

  • 2 replies
  • 7 have this problem
  • Last reply by wxcnav

wxcnav
wxcnav
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I'm strictly a user; not an IT guy. I can follow directions but need as much specific help as possible - i'm always afraid when i try corrective actions, i'll "break" something else. Need help quick for daughter & me (job hunt).

Other sites besides one listed gave same problem. But (in this case) ACT.org worked fine...

I'm strictly a user; not an IT guy. I can follow directions but need as much specific help as possible - i'm always afraid when i try corrective actions, i'll "break" something else. Need help quick for daughter & me (job hunt). Other sites besides one listed gave same problem. But (in this case) ACT.org worked fine...

All Replies (2)

cor-el
cor-el
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  • Top 10 Contributor
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Start Firefox in Diagnose Firefox issues using Troubleshoot 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 Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

>In Firefox 4 Safe mode also disables plugins (Tools > Add-ons > Plugins) and hardware acceleration (Tools > Options > Advanced > General)

wxcnav
wxcnav Question owner
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THANKS for the response - i'm going to save it just in case, but i think i may have solved it. I took a shot & powered down my cable modem & my router; then back on. Restarted Firefox & IT WORKS - both computers! I'm not smart enough to know why/how my modem (or router?) could cause that; usually if it needs re-setting, i am unable to open ANY web site, not just some. I'm bewildered, but (at least for the moment) satisfied. Thanks again for the suggestions.