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Suddenly yesterday, Firefox will not load.

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  • 1 has this problem
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  • Last reply by FredMcD

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Been working fine then yesterday January 21 at about 2300 Zulu Firefox will not load, safe mode does not work either, acts as if it is suddenly not there - only the shortcut icon. Running Windows 10, after attempting to load there is quite a bit of CPU action in task manager.

Been working fine then yesterday January 21 at about 2300 Zulu Firefox will not load, safe mode does not work either, acts as if it is suddenly not there - only the shortcut icon. Running Windows 10, after attempting to load there is quite a bit of CPU action in task manager.

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Sounds like a A/V or Firewall issue? Otherwise your FF could be corrupted and needs to be uninstalled and then reinstalled.

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Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}