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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

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Firefox System Requirements

Firefox for iOS 15.0

Operating systems

  • iOS 10.3
  • iOS 11
  • iOS 12

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