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Firefox loads but will not access the Internet, showing only a blank page with a single tab "Untitled," and "Done" in the progress indicator.

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When I load Firefox, I get a blank page. There is a single tab with "Untitled," and an indication "Done" at the bottom. The program does not respond to any of my bookmarks--it works but the end result is the blank page described above.

When I load Firefox, I get a blank page. There is a single tab with "Untitled," and an indication "Done" at the bottom. The program does not respond to any of my bookmarks--it works but the end result is the blank page described above.

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A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox.
See Server Not Found - Troubleshoot connection problems and Configure firewalls so that Firefox can access the Internet and http://kb.mozillazine.org/Firewalls

See also http://kb.mozillazine.org/Error_loading_websites


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

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That solved the problem for me. THANKS!