If a website's security certificate contains invalid info, you may receive a certificate error message in Internet Explorer. These error messages serve as protection from malicious sites that can download viruses onto your computer or obtain your personal info. But, it can be frustrating when you receive this type of error from a legitimate website. Learn how to resolve these error messages in Internet Explorer.

Tip icon.While Internet Explorer may still work with some AOL products and services, it's no longer supported by Microsoft and can't be updated. Because of this, we recommend you download a supported browser for a more reliable and secure experience online.