Amazon QuickSight is changing the way users sign in to the service with a new look and feel that aligns the sign-in experience with existing AWS application sign-in patterns. The QuickSight sign-in process is now a three-step experience: 1) the first page requires your QuickSight account name, 2) the second page asks for your user name, 3) the third page varies depending on your sign in configuration: native QuickSight or Active Directory user, AWS root user, or IAM user. This change does not affect users who use single sign on (SSO.)
This is a companion discussion topic for the original entry at https://aws.amazon.com/about-aws/whats-new/2022/08/amazon-quicksight-new-sign-in-experience/