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Enable and disable cookies that websites use to track your preferences

Enable and disable cookies that websites use to track your preferences

Websites store things like your preferences, login status, and trackers in "cookies" on your computer. Learn how to manage cookies in Firefox.

Update Firefox to the latest release

Update Firefox to the latest release

Firefox automatically updates itself by default but you can always do a manual update. Learn how to update Firefox on Windows, Mac or Linux.

What do the security warning codes mean?

What do the security warning codes mean?

Firefox shows you a warning page about a potential security risk when you try to connect to a secure site but your connection is not secure.

Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work?

Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work?

Since the release of Firefox version 52 in March 2017, NPAPI plugins no longer load, except for Adobe Flash. Learn more about this change.

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