Astronomer incident
Azure clusters may experience issues with worker scale up and task pod scheduling
Astronomer experienced a minor incident on June 15, 2026 affecting Scheduling and Running DAGs and Tasks and Scheduling and Running DAGs and Tasks, lasting 1h 25m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 15, 2026, 11:27 PM UTC
We are currently investigating this issue.
- identified Jun 15, 2026, 11:28 PM UTC
The issue, according to Azure status page ---- Investigating a spike in 401 authentication errors We are actively investigating customer alerts of 401 authentication errors when pulling images from mcr.microsoft.com. We've identified a potential underlying factor related to a recent update made to a backed service and we are actively working on determining mitigation workstreams. More information will be provided shortly. This message was last updated at 23:04 UTC on 15 June 2026
- monitoring Jun 15, 2026, 11:34 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Jun 16, 2026, 12:53 AM UTC
This incident has been resolved.