Auth0 incident
Intermittent Session Timeouts in US-4 Public Cloud Environment
Auth0 experienced a major incident on February 28, 2026 affecting Auth0 US-4 (Production) (Authentication), lasting 2h 15m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Feb 28, 2026, 12:45 AM UTC
We are currently investigating an incident that impacted our services. Impacted users would experience intermittent session timeouts. Our team is actively working to understand the root cause and mitigate the issue. We will provide updates as we gather more information.
- investigating Feb 28, 2026, 01:19 AM UTC
We are still experiencing errors. Our engineering team is actively investigating, with a current focus on reviewing system logs and telemetry to identify the root cause. We will provide an update within 30 minutes or as soon as new information becomes available.
- investigating Feb 28, 2026, 01:48 AM UTC
We are currently performing infrastructure optimizations to address performance degradation. We have refined our database configuration and are scaling up backend capacity to better manage current traffic loads. We are actively monitoring the environment to confirm that these adjustments successfully stabilize the service.
- monitoring Feb 28, 2026, 02:17 AM UTC
Our Engineering team has applied a fix, and while we're seeing clear indications of recovery, we're proceeding with an abundance of caution to ensure full stability. We will continue to monitor and will provide an update within 30 minutes or as soon as new information becomes available.
- monitoring Feb 28, 2026, 02:44 AM UTC
The initial impact has fully recovered, and we've transitioned from active response to a dedicated monitoring phase. While we expect services to remain stable, if you experience any intermittent session timeout errors, please contact our support team for assistance.
- resolved Feb 28, 2026, 03:34 AM UTC
Services has been restored. A root cause analysis (RCA) will be posted here within 14 days. We sincerely apologize for the impact this had on you and your users.
- resolved Mar 11, 2026, 06:19 PM UTC
A root-cause analysis for this issue has been performed and is now available at: [https://cdn.auth0.com/website/2026-02-28_-_Authentication_Errors_on_US-4_Public_Cloud_Environment.pdf](https://cdn.auth0.com/website/2026-02-28_-_Authentication_Errors_on_US-4_Public_Cloud_Environment.pdf)