このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
mfa does not work
対処
関連リンク
Doesn't prompt for MFA ・ Issue #284 ・ aws/amazon-ecs-cli ・ GitHub
https://github.com/aws/amazon-ecs-cli/issues/284
F5 ADFS iApp to replace the ADFS proxy (WAP)
https://devcentral.f5.com/questions/f5-adfs-iapp-to-replace-the-adfs-proxy-wap-53831
Azure Multi-Factor Authentication Reviews 2018 | G2 Crowd
https://www.g2crowd.com/products/azure-multi-factor-authentication/reviews
Azure Active Directory: Multi-factor Authentication (210 ideas ...
https://feedback.azure.com/forums/169401-azure-active-directory?category_id=160602&filter=top&page=2・・・
Centrify DirectControl Release Notes
https://centrify.force.com/support/servlet/fileField?retURL=%2Fsupport%2Fapex%2FCentrify_KB_ArtDetai・・・