Outage in ClassLink
Intermittent DUO MFA authentication errors
Resolved MinorIncident Report
Summary AI Generated
ClassLink experienced intermittent DUO MFA authentication errors that prevented some users from logging in, affecting Active Directory, Google, and Azure integrations. The incident lasted 25 hours while the team worked with DUO support to identify and implement a fix. The authentication errors were successfully resolved after DUO applied their fix.
We are currently investigating intermittent DUO MFA authentication errors affecting some users at login. Our team is actively working on a resolution and will provide updates as they become available.
We apologize for the inconvenience.
Components affected
ClassLink Google Integration ClassLink Azure Integration ClassLink Active Directory IntegrationTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
1 day ago - at 05/20/2026 01:41PM
The DUO MFA authentication errors have been resolved. Thank you for your patience while we worked with DUO to resolve the issue.
MONITORING
1 day ago - at 05/20/2026 11:32AM
The DUO MFA errors appear to have subsided. We are awaiting confirmation from DUO that a fix has been successfully applied and will post a final update once confirmed.
IDENTIFIED
2 days ago - at 05/19/2026 08:42PM
Update: We are actively working with DUO support on this issue. DUO has identified a potential cause and we are collaborating on a resolution. We will post updates as more information becomes available.
IDENTIFIED
2 days ago - at 05/19/2026 03:06PM
We have identified the issue and we are working on implementing a fix for the DUO authentication errors.
INVESTIGATING
2 days ago - at 05/19/2026 12:44PM
We are currently investigating intermittent DUO MFA authentication errors affecting some users at login. Our team is actively working on a resolution and will provide updates as they become available.
We apologize for the inconvenience.
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