Duo Security Outage History

An outage affected Duo AI Assistant queries used for help desk and user manager workflows, with intermittent failures across dozens of AI Assistant components. Direct viewing of authentication logs was not affected. The incident began on Jul 23, 2025 10:35 PM UTC and was resolved by Jul 24, 2025 12:35 PM UTC, spanning roughly 14 hours and causing degraded assistance for users.

The Duo Security status page issued three updates during the incident. A fix was implemented and monitoring began on Jul 24, 2025 12:30 AM UTC, and by Jul 24, 2025 12:35 PM UTC the final component had returned to normal. The event represents a partial outage with broad impact across the AI Assistant features, affecting users globally across affected roles.

Duo Security experienced a brief degradation affecting loading of Admin Panel SSO pages for some deployments. Admins attempting to access SSO login within the Duo Admin Panel may have faced delays or intermittent access. The issue affected multiple Admin Panel components and lasted about 20 minutes, from Jul 17, 2025 8:45 PM UTC to Jul 17, 2025 9:05 PM UTC. The incident involved 11 Admin Panel components (DUO63, DUO64, DUO41, DUO60, DUO79, DUO80, DUO15, DUO1, DUO2, DUO22, DUO9).

Duo Security reported phone routing issues that caused Duo Support numbers to route to the wrong endpoints, potentially delaying contact with the helpdesk. Duo Support teams are investigating and coordinating with internal groups to resolve the routing problem. If you need to submit a case, use the Duo Support Portal or email support@duo.com.

The incident began at 3:45 PM UTC and was resolved by 5:10 PM UTC, lasting about 1 hour 25 minutes. The provider issued two official updates during the incident. The impact was limited to the Duo Support / Phone Support channel, with no broader service disruption indicated.

Users experienced possible Duo SSO login failures affecting authentication to Duo-protected apps. The Duo Security status page noted that dozens of SSO components were affected and that an investigation was underway. The issue caused login issues for some customers for about 45 minutes, beginning at 10:05 PM UTC and ending at 10:50 PM UTC.

During the incident, Duo issued two status updates, first acknowledging the investigation and potential login failures, then confirming that services had returned to normal as the affected components came back online.

Duo Security reported an issue with the Duo Support / Phone Support line where key presses were not detected in the Admin Panel phone tree, preventing users from navigating the IVR. The outage affected only the Duo Support / Phone Support component and hindered access to phone-based assistance. As a workaround, customers were directed to use the phone numbers listed on Duo's website (https://duo.com/support) until the issue was resolved.

Duo Security reported an issue affecting administrator access to activity logs in the Admin Panel across three deployments: DUO55, DUO68, and DUO74. The incident began on Jun 19, 2025 7:30 AM UTC and was classified as degraded access, with admins unable to view or export activity logs during the outage. The provider issued updates indicating ongoing investigation and remediation, with three status changes over the course of the incident.

The issue was resolved on Jun 24, 2025 1:05 PM UTC, restoring Admin Panel activity log access for all affected deployments. The incident spanned roughly 5 days and 5 hours, and affected the Admin Panel components for DUO55, DUO68, and DUO74.

Duo Security experienced an India-region issue impacting phone call delivery authentication, causing failures for users attempting voice-based verification. The incident affected a broad set of Duo Phone Call Delivery components across deployments in India, resulting in authentication errors for those users.

The outage began at 8:36 AM UTC and was resolved by 9:25 AM UTC, lasting roughly 49 minutes. The Duo status page published two updates during the incident, acknowledging the problem and coordinating the recovery. The disruption appeared limited to India, with no reports of global impact.

Admins could not sign in to the Duo Admin Panel due to login failures and 'Invalid Credentials' messages. The issue affected the DUO50 Admin Panel component and began at Jun 6, 2025 1:30 PM UTC. Duo stated they were investigating and issued updates as the incident unfolded.

By Jun 6, 2025 2:15 PM UTC, the Admin Panel was reported back to normal and status moved back to fully operational. The incident resulted in a brief outage lasting about 45 minutes, with 2 official status updates during the resolution window. The problem was isolated to the Admin Panel and did not indicate broader impact on other Duo services.

Duo Security experienced an SMS delivery outage affecting phone numbers in the Netherlands and Australia. The incident was first posted as an investigation at Jun 6, 2025 7:01 AM UTC, with many DUO SMS Message Delivery components listed as degraded, which could have caused delays or failures sending SMS messages to those regions.

The outage lasted about 3 hours and 49 minutes, from Jun 6, 2025 7:01 AM UTC to Jun 6, 2025 10:50 AM UTC. The issue appeared to impact dozens of SMS delivery components across Duo’s SMS delivery service. Service began returning to normal after the final update when those components were listed as up again at Jun 6, 2025 10:50 AM UTC.

Status updates on the Duo Security status page noted the initial investigation and subsequent restoration of SMS delivery for the affected regions, with two official updates addressing the incident.

An issue with Duo Security's DUO64 Core Authentication Service caused authentication failures for some users. The incident was listed as a warning on the status page, beginning at 6:20 PM UTC and lasting about 1 hour and 35 minutes, until it was resolved at 7:55 PM UTC. Duo noted the issue had been identified and a fix was rolling out. Two status updates were posted during the incident, and the service returned to normal once the fix was deployed. The impact was limited to authentication for some users, with no indication of broader outages across Duo services.