Security News > 2023 > August > Ongoing Duo outage causes Azure Auth authentication errors
Cisco-owned multi-factor authentication provider Duo Security is investigating an ongoing outage that has been causing authentication failures and errors starting three hours ago.
The outage also led to Core Authentication Service issues across multiple Duo servers, triggering Azure Auth authentication errors for Azure Conditional Access integrations in a systemwide outage.
While the Azure Auth issue auto-resolved, customers are still reporting experiencing problems and push delivery services are currently affected by major outages.
On the other hand, its HTTPS and LDAP(S) endpoints used by its Core Authentication Service were only hit by what Duo describes as a partial outage.
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Slack down: Outage causing connection errors, blurry images.