Security
Is Duo Security Down?
Duo Security is a security service.
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Duo Security is UP
Duo Security is reachable from our servers. It responded with HTTP 200 in 139ms. If you cannot access it, the issue is likely on your end — try clearing your cache, flushing DNS, or switching networks.
Official resources
Official Status Page ↗ — check for reported incidents
@duo_sec on X ↗ — real-time updates during outages
Check another site
About Duo Security outages
Duo Security (duo.com) is a security service. Duo Security is a security service.
Common causes of Duo Security outages include server overload, DNS failures, DDoS attacks, software deployments, CDN issues, and infrastructure failures. Most outages resolve within minutes to a few hours.
If Duo Security is down for everyone: Check their official status page and social media for updates.
If Duo Security is up but not working for you: Try clearing your browser cache, disabling your VPN, flushing DNS, or switching networks.
User Reports