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Sigma Computing: CloudFront outage US-EAST-1
Timeline of updates
- resolved
Backdated incident: CloudFront outage US-EAST-1
Impacted Cloud Regions & Services: Sigma users accessing the application from the Eastern US were impacted, receiving 421 error pages when attempting to log in or access workbooks. Scheduled exports and API services were unaffected.
Incident Start Time: July 18, 2023 16:37AM UTC
Incident End Time: July 18, 2023 17:13AM UTCWe have performed a root cause analysis (RCA) and have published the findings in a postmortem note on the Sigma Community site.
- postmortem
Sigma Engineering has completed the postmortem of this incident. A Root Cause Analysis (RCA) is available on the Sigma Community site: Postmortem for July 18, 2023 incident: Sigma outage for users using AWS/CloudFront US-EAST-1 (opens in new tab)
Archive proof
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How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-17 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
bfcb863a51ea4519…
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Sigma Computing, started 2023-08-02 01:26 UTC, resolved after -20696 min, 2 update(s).
- Title
- CloudFront outage US-EAST-1
- Vendor
- Sigma Computing
- Date
- URL
- https://rewindex.com/company/sigma-computing/incidents/122dghmh7tz5
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