Outage in AWS
Increased API Error Rates - Oregon
Resolved Minor
September 03, 2026 - Started about 17 hours ago
- Lasted about 2 hours
Incident Report
Summary AI Generated
AWS experienced elevated API error rates for STS (AssumeRoleWithSAML and AssumeRoleWithWebIdentity) and Sign-In services using SAML in the US-WEST-2 (Oregon) region, beginning at 2:12 PM PDT on September 3, 2026. The incident lasted approximately 2.4 hours and impacted AWS IAM Identity Center, AWS Sign-In, and Amazon Connect in the Oregon region. Error rates returned to pre-event levels following recovery efforts, with AWS continuing to monitor for full stabilization.
Starting at 2:12 PM PDT, we began experiencing increased API error rates for STS and Sign In when using SAML in the US-WEST-2 Region. Our engineering team was automatically engaged at 2:19 PM to begin investigating the root cause. There is no work around available at this time. We will provide another update by 3:30 PM PDT.
Components affected
Multiple services Multiple services (us-west-2) AWS IAM Identity Center AWS IAM Identity Center (us-west-2) AWS Sign-In AWS Sign-In (us-west-2) Amazon Connect Amazon Connect (us-west-2)Trusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
UPDATE
about 15 hours ago - at 09/03/2026 11:20PM
We continue to see recovery holding steady for the STS AssumeRoleWithSAML and AssumeRoleWithWebIdentity APIs in the US-WEST-2 Region. Error rates are now back to pre-event levels, and we continue actively monitoring to confirm full recovery. We will provide another update by 5:15 PM or earlier.
UPDATE
about 16 hours ago - at 09/03/2026 10:26PM
We are seeing early signs of recovery and continue to monitor for full recovery. We will provide another update at 4:15 PM, or sooner if we have additional information to share.
UPDATE
about 17 hours ago - at 09/03/2026 09:49PM
Starting at 2:12 PM PDT, we began experiencing increased API error rates for STS and Sign In when using SAML in the US-WEST-2 Region. Our engineering team was automatically engaged at 2:19 PM to begin investigating the root cause. There is no work around available at this time. We will provide another update by 3:30 PM PDT.
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