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Upgrading or buying a new computer with Windows 8? Buying a new tablet with Windows 8 or Windows RT (the Surface for example)? This article explains your options for running Firefox on Windows 8
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Does Firefox work in the Windows 8 desktop view?
Firefox 17 is the first version that officially supports Windows 8 in the desktop view although the previous versions of Firefox should work without major issues. See Firefox 17 system requirements for more details.
Does Firefox work in the Windows 8 Metro interface?
There is now experimental support for the Windows 8 Metro interface in Firefox Nightly. If you are technical, we would love your help testing the Windows 8 Metro support in Firefox Nightly. More info can be found in this article: How do I launch Firefox for Windows 8 Touch?.
Does Firefox work on Windows RT?
Firefox is not available for Windows RT.