Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Featured Articles

Sync Firefox data

Sync Firefox data

Learn what Sync is, how it works, what it lets you do and how to avoid data loss with Sync, Firefox and your Mozilla account.

Add-ons in Firefox for iOS

Add-ons in Firefox for iOS

Why Firefox add-ons are unavailable for Firefox on iOS.

Reset your Mozilla account password with Recovery Keys

Reset your Mozilla account password with Recovery Keys

Generate an account recovery key, so you can sign in to your Mozilla account to regain access to your synced data, in case you forget your password.

Private Browsing in Firefox for iOS

Private Browsing in Firefox for iOS

Firefox lets you browse without saving your history or cookies on your iPhone or iPad.