Outage in Sigma Computing
High errors showing being displayed in workbooks
Resolved MinorIncident Report
Summary AI Generated
Sigma Computing experienced a 42-minute incident on June 22, 2026 (approximately 17:30–18:14 UTC) in which users on the AWS US-WEST-2 region encountered "An error has occurred" messages when loading workbook elements. The root cause was an abnormal spike in CPU usage on Sigma's AWS infrastructure. The issue was resolved by scaling infrastructure to handle the increased load, with a full postmortem to be published to the Sigma Community site.
We have received reports of errors loading workbook elements on their Sigma application.
We are investigating the issue at the highest priority.
Our preliminary investigations indicate the following:
Impacted Cloud Regions & Services: AWS aws-us-west-2
User Experience: "An error has occurred" presented on workbooks.
Incident Start Time: Approximately 10:30 AM PST
We will provide updates on this page when we have pertinent status updates.
Components affected
Sigma Computing Sigma - AWS (US)Trusted by 1,000+ teams
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RESOLVED
25 days ago - at 06/22/2026 06:52PM
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
INVESTIGATING
25 days ago - at 06/22/2026 06:11PM
We have received reports of errors loading workbook elements on their Sigma application.
We are investigating the issue at the highest priority.
Our preliminary investigations indicate the following:
Impacted Cloud Regions & Services: AWS aws-us-west-2
User Experience: "An error has occurred" presented on workbooks.
Incident Start Time: Approximately 10:30 AM PST
We will provide updates on this page when we have pertinent status updates.
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