Sigma Computing change history: Widespread failures are preventing Sigma from loading for GCP-hosted organizations.

A critical outage prevented GCP-hosted organizations in us-central1 from reliably accessing Sigma. The recorded incident ran from 2026-09-01 15:34 UTC to 2026-09-01 16:55 UTC (1 h 20 min), though Sigma reported an approximate start of 2:46 PM UTC. The postmortem attributed the disruption to a Google Cloud networking incident; services returned to normal.