Astronomer incident

Airflow UI showing 403s for some customers

Major Resolved

Astronomer experienced a major incident on April 27, 2026, lasting 2h 9m. The incident has been resolved; the full update timeline is below.

Started
Apr 27, 2026, 10:06 PM UTC
Resolved
Apr 28, 2026, 12:16 AM UTC
Duration
2h 9m
Detected by Pingoru
Apr 27, 2026, 10:06 PM UTC

Update timeline

  1. investigating Apr 27, 2026, 10:06 PM UTC

    It seems to be only in AWS clusters for now. We have a workaround we can apply while we investigate.

  2. investigating Apr 27, 2026, 10:06 PM UTC

    We are continuing to investigate this issue.

  3. resolved Apr 28, 2026, 01:06 AM UTC

    We rolled back a change we made to our authentication system. Any image pushes or config changes to a deployment that occurred after our rollback caused the deployment to fix itself, which is why so many people found their 403s resolved themselves after some time.