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My options/preferences link does not work, how can i fix it?

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Every time i try to open my options or preferences, it say that the 'address is not valid'. is there any way to fix this issue?

Every time i try to open my options or preferences, it say that the 'address is not valid'. is there any way to fix this issue?

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Type about:preferences<enter> in the address bar.

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Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window