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Firefox does not start anymore, a reinstallation did not solve the problem

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  • Last reply by FredMcD

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Firefox does not start anymore in Windows 10, a reinstallation did not solve the problem. I do not get any failure messages. It just does nothing. How can I solve the problem?

Firefox does not start anymore in Windows 10, a reinstallation did not solve the problem. I do not get any failure messages. It just does nothing. How can I solve the problem?

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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}