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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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Where is Mozilla?

Need help with Firefox? Get it on our support site

Mozilla Spaces

Mozilla Spaces are our offices around the world. They are open environments where Mozillians can work side by side — hacking, coding, designing, researching and creating. They are places for us to meet, collaborate and continue to building a brighter future for the Web.

  • San Francisco

    149 New Montgomery Street
    4th floor

    San Francisco, CA 94105
    USA

  • Beijing

    Mozilla Online Ltd.
    China Resources Building, Suite 1708
    8 Jianguomenbei Avenue

    Dongcheng District, Beijing 100005
    China

  • Berlin

    GSG-Hof Schlesische Straße
    Gebäude 3, 4. Obergeschoss
    Schlesische Straße 27

    10997 Berlin
    Germany

  • Toronto

    366 Adelaide St W, Suite 500
    Toronto, ON M5V 1R9
    Canada

These Mozilla Spaces are not support centers. Need help with Firefox? Get it on our support site