duo cisco

The tag duo cisco covers discussions about Cisco's Duo Security multi-factor authentication (MFA) platform, particularly in relation to Microsoft 365 outages. A recent thread documents a Microsoft 365 MFA outage (incident MO1237461) where Duo-related 504 gateway timeout errors disrupted sign-ins for North American users. The content highlights dependencies between Microsoft's authentication systems and third-party MFA vendors like Duo, with engineers working to restore normal traffic. This tag is relevant for IT administrators and security professionals troubleshooting MFA failures, understanding third-party integration risks, or monitoring Microsoft 365 service health tied to Duo Cisco products.