- Level
- confirmed
- Worst impact
- Degraded
- Components
- Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Admin Panel, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service
- Down Index
- 24of 100
What to do
Check whether you use Duo Security Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service and 75 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 7h 42m it lasted.
Anything that failed between 2025-10-15 12:19 UTC and 2025-10-15 20:01 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
- investigating
We are currently investigating an issue causing Duo Desktop to not be recognized during authentications on Windows 11 24H2/25H2. If possible, please refrain from upgrading to 24H2/25H2 at this time. However, if this has already been done, downgrading to the previous version will resolve the issue. Please check back here or subscribe to updates for any changes.
provider
- identified
We have identified an issue with a recent Windows update that has caused Duo Desktop to not be recognized on Windows 11 24H2 and 25H2 and have some recommended remediation steps to resolve the issue. We have published a KB article with the steps: https://help.duo.com/s/article/9527 We are working with Microsoft to provide a more permanent solution in a future Windows update. Please check back here or subscribe to updates for any changes.
provider
- resolved
We have identified an issue with a recent Windows update that has caused Duo Desktop to not be recognized on Windows 11 24H2 and 25H2 and have provided remediation steps in a Knowledge Base article linked below. While we work with Microsoft to ensure a permanent solution is provided via update, we will be marking this incident resolved and providing further updates through the KB article as well as via email communications. Why is Duo Desktop not detected on my Windows device after installing updates to Windows 11? https://help.duo.com/s/article/9527 Please check the KB article for any further updates.
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-d793c9c5df
Is Duo Security still down?
No, this incident was resolved 2025-10-15 20:01 UTC. For Duo Security's live state, see https://down.guide/duo.
How long did it last?
7h 42m, from 2025-10-15 12:19 UTC to 2025-10-15 20:01 UTC, by the times Duo Security posted.
What was affected?
Duo Security named Core Authentication Service, Core Authentication Service, Core Authentication Service, Core Authentication Service and 75 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.