- Level
- confirmed
- Worst impact
- Major outage
- Components
- Core Authentication Service, Admin Panel, Push Delivery, Phone Call Delivery, SMS Message Delivery
- Down Index
- 39of 100
What to do
Check whether you use Duo Security Core Authentication Service, Admin Panel, Push Delivery, Phone Call Delivery and 1 more. 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 43m it lasted.
Anything that failed between 2025-10-07 19:13 UTC and 2025-10-07 19:56 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 5
- investigating
We are currently investigating an issue causing a full outage for all services on our DUO34 deployment and are working to restore services as soon as possible. Please check back here or subscribe to updates for any changes
provider
- identified
We have identified the issue causing an outage for all services on our DUO34 deployment and working to deploy a fix.
provider
- monitoring
We have deployed a fix for the issue causing an outage for all services on our DUO34 deployment and are monitoring the results at this time.
provider
- resolved
The issue causing an outage for all services on our DUO34 deployment has been resolved. We will publish a RCA as soon as it is available. You can check back here for the latest information or subscribe for updates.
provider
- postmortem
# **DUO34 Deployment Outage** ## Incident Report – 10/7/2025 ### Summary On October 7, 2025, between 2:40pm EDT and 3:40pm EDT, all services on Duo 34 were unavailable. This was due to a misconfiguration in our edge load balancer which stopped all traffic to that deployment. Duo engineering promptly fixed the misconfiguration and have fixed the underlying cause, to ensure our systems are more resilient. ### Details Duo’s application platform has two parts to manage our services. One-part handles creating the network setup, and the other controls how traffic reaches running services. A service disruption occurred because of a misalignment between these two key systems. Even though the network was set up correctly, changes were not reflected in the traffic routing settings. This caused traffic to stop reaching the services, resulting in the outage. To restore service, a manual fix was put in place to connect these network servers with the right settings. As a long-term solution, we have updated the system settings to point to the right destinations. This will ensure that the misalignment will not happen again. To avoid this problem in the future, we're reviewing how we manage system configurations, improving our setup process to avoid local files, and adding checks to stop changes that could cause similar issues.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-479fa83bd7
Is Duo Security still down?
No, this incident was resolved 2025-10-07 19:56 UTC. For Duo Security's live state, see https://down.guide/duo.
How long did it last?
43m, from 2025-10-07 19:13 UTC to 2025-10-07 19:56 UTC, by the times Duo Security posted.
What was affected?
Duo Security named Core Authentication Service, Admin Panel, Push Delivery, Phone Call Delivery and 1 more.
What caused it?
Duo Security hasn't published a root cause. If it does, it shows here.
Where does this come from?
Duo Security's official status page, https://status.duo.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.