Astronomer change history: Increased auth errors

Astronomer reported a major outage affecting authentication, deployment access and DAG visibility, with 401 and RBAC errors for multiple customers. It started at 2026-09-04 03:08 UTC and was resolved at 2026-09-04 06:07 UTC, lasting 2 h 58 min. A network configuration change during an infrastructure upgrade disrupted control-plane connectivity to customer deployments; Astronomer applied a fix and confirmed normal operation.