How to Reset Comcast Email Password? · 1. Go to xfinity.com/password. · 2. Now, type in your “Comcast username” and click on the “Continue” button. · Change settings in Outlook for your email account, such as account passwords, ... Outlook and with your email provider (for example, Microsoft 365, Gmail, Yahoo, iCloud, or Xfinity). You may need to change your password one or both places.