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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.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit

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Firefox is no longer supported on macOS 10.14 and below.

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

Download Firefox ESR
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Thanks for choosing Firefox!

We’re sorry to report this, but your computer does not meet the minimum system requirements to run this version.

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For more information on supported systems

View System Requirements

To make your computer more secure, we recommend upgrading your operating system to a newer version as soon as possible (plus, you’ll be able to use Firefox!). But, if you can’t do so, here are some alternate browsers that should be compatible with your current system:

  • Opera for Windows 95 and above and Mac OS 10.3 and above
  • iCab for Mac OS 10.3 and above