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Firefox does not open

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  • 1 has this problem
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  • Last reply by FredMcD

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' bold text' Good Evening,

 I had an update to install on my laptop for Windows 10 and now Firefox does not open. I have tried everything, uninstalling, reinstalling, standing on my head and nothing works. Can you please assist?

Thank you, Christine Gernant

''' '''bold text'''''' Good Evening, I had an update to install on my laptop for Windows 10 and now Firefox does not open. I have tried everything, uninstalling, reinstalling, standing on my head and nothing works. Can you please assist? Thank you, Christine Gernant

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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}