Elevated Authentication Latency in DUO6

What to do

• Check whether you use Duo Security Core Authentication Service. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 1h 3m it lasted.

  Anything that failed between 2026-04-28 14:22 UTC and 2026-04-28 15:26 UTC may need a replay.

• Subscribe to Duo Security's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=duo works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Duo Security 3

1. investigatingApr 28, 2026, 2:22 PM UTC

   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.

   provider

2. monitoringApr 28, 2026, 2:56 PM UTC

   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.

   provider

3. resolvedApr 28, 2026, 3:26 PM UTC

   The issue causing elevated authentication latency has been fully resolved. Authentication performance has returned to normal levels, and customers should no longer experience delays during login attempts.

   provider

Corrections

None so far.

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