Multiple Deployments: Duo SSO Authentication Failures for some customers

Incident Report for Duo

Resolved

We can now confirm that SSO authentications are now fully operational and the issue is resolved. We will provide an RCA as soon as it is available.

In the meantime, we highly recommend configuring multiple Duo Authentication Proxies, ideally 3, for Duo SSO for redundancy, as only customers who had a single proxy were impacted. More details on this can be found here:
https://duo.com/docs/sso#configure-your-authentication-source
https://help.duo.com/s/article/6321

Posted Jan 30, 2025 - 13:55 EST

Update

We are continuing to monitor for any further issues.

Posted Jan 30, 2025 - 13:37 EST

Monitoring

We have implemented a fix and are seeing successful recovery of Duo SSO authentications for impacted customers. We will continue monitoring to ensure the issue is fully resolved.

Posted Jan 30, 2025 - 13:34 EST

Investigating

We are investigating an issue that is causing a small number of customers to experience authentication failures when logging into applications protected by Duo SSO.

Posted Jan 30, 2025 - 13:27 EST

This incident affected: DUO1 (SSO), DUO2 (SSO), DUO4 (SSO), DUO6 (SSO), DUO10 (SSO), DUO13 (SSO), DUO15 (SSO), DUO16 (SSO), DUO18 (SSO), DUO19 (SSO), DUO23 (SSO), DUO28 (SSO), DUO31 (SSO), DUO33 (SSO), DUO36 (SSO), DUO37 (SSO), DUO41 (SSO), DUO60 (SSO), DUO79 (SSO), and DUO80 (SSO).