Outage in Duo Security

[DUO4] Authentication Failures

Resolved Major

January 22, 2026 - Started about 18 hours ago - Lasted about 2 hours
Official incident page

Incident Report

We are investigating an issue causing authentication failures on our DUO4 deployment. Please check back here or subscribe to updates for any changes.

Components affected

Duo Security Core Authentication Service

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Latest Updates ( sorted recent to last )

RESOLVED about 16 hours ago - at 01/22/2026 08:18PM

The issue causing authentication failures on our DUO4 deployment has been resolved.

INVESTIGATING about 18 hours ago - at 01/22/2026 06:36PM

We are investigating an issue causing authentication failures on our DUO4 deployment.

Please check back here or subscribe to updates for any changes.

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