Sigma Computing outage, 22 June 2026

High errors showing being displayed in workbooks

Started
Resolved
22 Jun 2026, 18:52 UTC (after 41 min)
Impact
Minor
Affected
Sigma - AWS (US)

Last update from Sigma Computing

We identified a higher than usual spike in CPU usage during the timeframe below on our AWS instance. We scaled our infrastructure accordingly to accommodate this and the mitigation measures have proven effective, and our monitoring indicates that this issue is resolved. We will perform a root cause analysis (RCA) and publish our findings in a postmortem note to the Sigma Community site in the coming days. Impacted Cloud Regions & Services: AWS US-WEST-2 User Experience: We expect users to no longer experience workbook errors. Incident Start Time: Approximately 17:30 UTC June 22, 2026 Incident End Time: Approximately 18:14 UTC June 22, 2026

22 Jun 2026, 18:52 UTC

Read the full incident on the official Sigma Computing status page

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