Firefox for Enterprise Support

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Firefox ESR release cycle

Firefox ESR release cycle

Firefox offers an Extended Support Release (ESR) based on a regular release of Firefox for desktop for use by organizations. Learn more.

Legacy browser support extension for Windows

Legacy browser support extension for Windows

Add-ons and older versions of Firefox ESR may enable your users to run legacy add-ons and view websites that require Internet Explorer.

Customize Firefox using AutoConfig

Customize Firefox using AutoConfig

How to use AutoConfig files to set and lock preferences that are not covered by Firefox policies.

Choose a Firefox update channel

Choose a Firefox update channel

How to choose between rapid release and extended support release (ESR).

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