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This article describes how to install a previous version of Firefox, a process also known as "downgrading".

This article describes how to install a previous version of Firefox, a process also known as "downgrading". For instructions on how to install a newer version, see [[Updating Firefox]]. = Installing a previous version doesn't fix most problems= Problems after upgrading Firefox are generally not caused by the new version itself, but rather the upgrade process. Installing a previous version will not help for most problems. To get help, see: * [[Common questions after updating Firefox]] * [[Cannot connect after upgrading Firefox]] Other problems can be solved by [[Managing profiles#w_creating-a-profile|creating a new profile]]. = I still want to downgrade — where can I get the previous version? = If you still want to downgrade to a previous version, you can do so by [http://www.mozilla.com/en-US/firefox/all-older.html downloading and running it's installer from this page]. After downgrading, if you intend to stay with that version, you will need to disable [[Updating Firefox#w_configuring-update-options|automatic updating]]. It is highly recommended that you try new versions of Firefox as they're released to see if they solve your problem. {warning}'''Warning:''' The previous version will only be maintained with security and stability updates for a short amount of time.{/warning}