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Major OutageCritical · Resolvedcloud

AWS us-east-1 elevated error rates

Elevated error rates on the Elastic Load Balancing control plane in us-east-1 prevented new load balancer creation and impacted services with dependencies on the region.

Started
Feb 4, 2026, 07:31 PM UTC
Resolved
Feb 4, 2026, 10:12 PM UTC
Duration
2h 41m
Reports
8,910

Timeline

  1. Feb 4, 2026, 07:31 PM UTCFirst reports of 5xx errors in us-east-1.
  2. Feb 4, 2026, 07:58 PM UTCAWS posts an investigating notice on the Health Dashboard.
  3. Feb 4, 2026, 09:24 PM UTCEngineers identify a regression in a recent control-plane deploy.
  4. Feb 4, 2026, 10:12 PM UTCRollback complete; error rates return to baseline.

Affected systems

  • Elastic Load Balancing (ELB)
  • Auto Scaling control plane
  • Downstream us-east-1 customers

Data sources

probeuser reportsofficial status
https://health.aws.amazon.com/health/status →
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