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Duo Security Outage History

Uptime record, past incidents, and downtime history for Duo Security.

Checking current status...
90.1% uptime over 91 days
99.9% ✗ 99.5% ✗ 99% ✗ 95% ✗

90-Day Trend

Feb 25May 25

Monthly Uptime

Month Uptime Days Tracked Days with Issues
May 2026 88% 25 3
April 2026 90% 30 3
March 2026 90.3% 31 3
February 2026 100% 5 0

Uptime is calculated from daily worst-status snapshots. A day with any non-operational status counts as a day with issues.

Daily Status (Last 91 Days)

Feb 24 Today
Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

May 2026
All US Deployments: AI Assistant failures
minor

Started: May 18, 6:37 PM

monitoring
We have implemented mitigation measures and are observing improved AI Assistant performance. We are continuing to monitor success rates and overall service stability.
May 18, 7:27 PM
investigating
We are currently investigating an issue with AI Assistant not functioning on all US deployments and are working to correct the issue as soon as possible. Please check back here or subscribe to updates for any changes.
May 18, 6:37 PM
Authentication failures
minor

Started: May 13, 1:22 PM

monitoring
We have implemented a fix for the issue causing authentication failures on DUO57 with the Duo Core Authentication Service. We will continue to monitor system performance and authentication success rates and will provide further updates once the incident is fully resolved.
May 13, 3:37 PM
identified
We have identified the cause of the issue causing authentication failures on DUO57 with the Duo Core Authentication Service and are actively working to restore service.
May 13, 2:52 PM
investigating
We are currently investigating an issue causing limited authentication failures on DUO57 and are working to correct the issue as soon as possible.
May 13, 1:22 PM
AI Assistant First-Time Access Failures for EU Administrators
minor

Started: May 7, 2:17 PM

identified
We’ve identified a problem impacting first-time access to the AI Assistant for administrators in the EU and are actively working to restore normal access. We’ll continue to share updates as progress is made.
May 7, 4:30 PM
investigating
We are investigating an issue causing failures when administrators located in the EU attempt to access the AI Assistant for the first time. Any administrators who have used the Assistant before should still be able to at this time
May 7, 2:17 PM
AI Assistant First-Time Access Failures for EU Administrators
minor

Started: May 7, 1:57 PM

investigating
We are continuing to investigate this issue.
May 7, 1:59 PM
investigating
We are investigating an issue causing failures when administrators located in the EU attempt to access the AI Assistant for the first time. Any administrators who have used the Assistant before should still be able to at this time Components Impacted: DUO3, DUO38, DUO47, DUO48, DUO 57, DUO70 : AI assistance
May 7, 1:57 PM
April 2026
Desktop Authenticator Enrollment Degradation
minor

Started: Apr 30, 5:54 PM

monitoring
Mitigation actions have been implemented. The service has stabilized and recovery is underway. We will continue to monitor to ensure full resolution.
Apr 30, 5:57 PM
identified
We are currently addressing an issue impacting desktop authenticator enrollments .A subset of customers may experience intermittent delays or failures during desktop authenticator enrollment. Mitigation actions are in progress and are helping to reduce impact. Core authentication, SSO, and delivery services  remain fully operational.
Apr 30, 5:54 PM
Elevated Authentication Latency in DUO6
major

Started: Apr 28, 2:22 PM

monitoring
We have applied mitigation steps and are seeing improved authentication performance for customers in the deployment. Authentication latency has decreased, and the service is recovering. Our team is continuing to monitor the environment closely to ensure stability while we investigate the underlying cause.
Apr 28, 2:56 PM
investigating
We are investigating elevated authentication latency affecting customers . Authentication requests are continuing to succeed at this time, but customers may experience slower-than-normal response times and degraded performance during login attempts. Our team is actively working to identify the cause and restore normal performance as quickly as possible.
Apr 28, 2:22 PM
SMS Delivery Failures
major

Started: Apr 18, 4:30 AM

investigating
We are continuing to investigate the SMS delivery issue impacting all customers in the US region. Push notifications will continue to work as expected. Further updates will be provided as more information becomes available.
Apr 18, 5:39 AM
investigating
We are currently detecting an issue with carriers in the US region for SMS delivery. We are currently working with providers to restore the service. In the meantime, please use other means of authentication such as Duo Push.
Apr 18, 4:30 AM
March 2026
Duo Phone Call Authentication Failure for US Based Carriers

Started: Mar 22, 10:13 PM

monitoring
We are now observing high rates of success of VoIP authentication. The issue appears to be resolved but we will continue to monitor the situation.
Mar 23, 12:01 AM
investigating
We are currently observing a recurrence of the issue causing VOIP authentication failures in all deployments in the US region. We are working to correct the issue as soon as possible. While we work to resolve this, please use alternative authentication methods such as Duo Mobile Push, SMS passcodes etc. A full list of available authentication methods can be found here: https://duo.com/docs/policy#authentication-methods
Mar 22, 10:13 PM
Duo Phone Call Authentication Failure for US Based Carriers

Started: Mar 22, 5:18 PM

monitoring
We are now observing high rates of success of VoIP authentication. We will continue to monitor the situation.
Mar 22, 8:00 PM
investigating
We are observing a recovery in voice call processing across the U.S. and are continuing to investigate the root cause of this impact.
Mar 22, 7:13 PM
investigating
We are currently investigating an issue causing VOIP authentication failures in all the deployments in the US region and are working to correct the issue as soon as possible. At this time please use alternative authentication methods such as Duo Mobile Push, or SMS passcodes. A list of all other alternative authentication methods can be found here: https://duo.com/docs/policy#authentication-methods Please check back here or subscribe to updates for any changes.
Mar 22, 5:18 PM
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