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 MoreLearn how Firefox will continue supporting Windows 10 after Microsoft ends its updates, and discover the steps Mozilla recommends to keep your browsing experience secure.
Learn why Firefox may block a page embedded by another site, and what you can do to open it.
Firefox will show you a "connection is not secure" warning message when a website login page is insecure and information could be stolen.
Learn why you might see time-related errors on HTTPS websites and how you can troubleshoot these errors by correcting your system clock.