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Outage in Sigma Computing

Input Table Edits Failing if customer updated warehouse connection

Resolved Minor
September 10, 2026 - Started 7 days ago - Lasted 1 day
Official incident page

Incident Report

Summary AI Generated

A bug in Sigma Computing prevented customers from saving edits to existing input tables on warehouse connections that had been switched from non-OAuth to OAuth authentication, lasting approximately 27.7 hours. Engineers reverted the change that introduced the regression and applied mitigation measures to restore input table writeback functionality for affected connections. The issue was fully resolved, with a postmortem to be published to the Sigma Community site.

We've identified an issue causing edits to existing input tables to fail on certain connections using OAuth authentication when connection was changed from non-OAuth connection. Impact: Some customers are unable to save edits to existing input tables on affected connections. Next Steps: We are reverting the change that introduced this regression and are working to restore writeback on input tables for the affected connections. We will post another update once a fix has been deployed. We apologize for the inconvenience and will continue to update this page as we make progress!

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Latest Updates ( sorted recent to last )
RESOLVED 6 days ago - at 09/11/2026 10:01PM

The mitigation measures have proven effective, and the 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 coming days.

MONITORING 6 days ago - at 09/11/2026 05:51PM

We applied a mitigation and are monitoring its effect closely. Customers can now safely change warehouse connection auth method and make input table edits.

We'll share our next update in 4 hours. Thanks for your patience.

MONITORING 6 days ago - at 09/11/2026 04:14AM

Our engineers have implemented mitigation measures to circumvent the issue and we are monitoring their effect closely. Customers can now safely change warehouse connection auth method and make input table edits.

IDENTIFIED 6 days ago - at 09/11/2026 02:37AM

Customers can now safely change warehouse connection auth method. We are still restoring the impacted customers who are unable to make edits to input tables that were created prior to the auth method change. We will post another update once the input tables have been restored.

We apologize for the inconvenience and will continue to update this page as we make progress.

IDENTIFIED 6 days ago - at 09/11/2026 12:37AM

Customers can now change auth methods safely. However we are still restoring the affected customers who are unable to make edits to input tables. We will post another update once the input tables have been restored.

We apologize for the inconvenience and will continue to update this page as we make progress!

IDENTIFIED 7 days ago - at 09/10/2026 10:43PM

We've identified an issue causing edits to existing input tables to fail on certain connections using OAuth authentication when connection was changed from non-OAuth connection.

Our engineering team is now testing a fix in internal environments. we will continue to update the page as we make progress.

Thanks for your patience!

IDENTIFIED 7 days ago - at 09/10/2026 07:18PM

We have reverted the issue, customers can now change their warehouse connection Auth Method without breaking input tables. We are still working to restore writeback on input tables for the affected connections. We will post another update once the input tables have been restored.

We apologize for the inconvenience and will continue to update this page as we make progress!

IDENTIFIED 7 days ago - at 09/10/2026 06:24PM

We've identified an issue causing edits to existing input tables to fail on certain connections using OAuth authentication when connection was changed from non-OAuth connection.

Impact: Some customers are unable to save edits to existing input tables on affected connections.

Next Steps: We are reverting the change that introduced this regression and are working to restore writeback on input tables for the affected connections. We will post another update once a fix has been deployed.

We apologize for the inconvenience and will continue to update this page as we make progress!

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