Xfinity needs to update expired SSL Certificates associated with xFI - https://internet.xfinity.com/

Certificate Error

There is an issue with the SSL certificate of the server you are trying to contact.

Certificate Name: internetsecurity.xfinity.com

IP: 96.114.120.100

Category: any

Issuer: COMODO RSA Organization Validation Secure Server CA

Status: expired

Certificate Error

There is an issue with the SSL certificate of the server you are trying to contact. Please contact your IT staff if you believe this is in error.

Certificate Name: xerxes-sub.xerxessecure.com

IP: 96.118.248.245

Category: any

Issuer: COMODO RSA Organization Validation Secure Server CA

Status: expired