The Duo service is back online and service has been restored.
Update, 8:30 a.m.— From 7:20 a.m. to 7:26 a.m. on February 21, 2019, the DUO1 deployment experienced a load balancer failure resulting in 100% of authentication requests failing to complete. This issue was identified and resolved via automated remediation. Full incident details can be found on Duo’s site at http://stspg.io/940af334e
We’re getting reports of issues using Duo to log in and use multifactor authentication. We’re
working to resolve it.