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
Browse our self-help options first or continue to ask your question and get help.
Learn 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 how to make Firefox your default Web browser on Windows 10 and Windows 11.
If you can't connect to a website, you may see the Server Not Found error message. Learn how to troubleshoot and fix this error.
Firefox will show you a "connection is not secure" warning message when a website login page is insecure and information could be stolen.
