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Outage in Klaviyo

Klaviyo app slowness

Resolved Major
November 04, 2026 - Started 8 days ago - Lasted 1 day
Official incident page

Incident Report

Summary AI Generated

Klaviyo experienced a major incident lasting approximately 25 hours in which customers faced slow load times across the app and degraded reporting and metrics, including stale data and API errors. To aid recovery, background processing for reporting was temporarily paused, though campaign and flow sending remained unaffected throughout. The incident was resolved after page load times stabilized, metrics caught up, and attribution settings changes returned to processing normally.

Some customers may be experiencing slow load times across the Klaviyo app. Our team is actively looking into the cause. We will share another update as soon as we have more information.
Components affected
Klaviyo App Klaviyo Analytics

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Latest Updates ( sorted recent to last )
RESOLVED 7 days ago - at 11/05/2026 05:31PM

Reporting, metrics, and page load times remain stable, and attribution settings changes are processing normally again. We apologize for the disruption this caused. This incident has been resolved.

MONITORING 8 days ago - at 11/04/2026 11:12PM

Reporting and metrics have caught up and are now up to date, and requests to our metrics and reporting APIs are returning normally. If you recently changed your attribution settings, updated revenue attribution for past messages may take longer than usual to appear. We continue to monitor closely and appreciate your patience throughout this incident.

IDENTIFIED 8 days ago - at 11/04/2026 10:02PM

Reporting and metrics continue to catch up, so some data may still appear out of date. Page load times remain normal. Some requests to our metrics and reporting APIs may also continue to return errors. We will share another update as soon as we have more information.

IDENTIFIED 8 days ago - at 11/04/2026 08:45PM

Page load times across the Klaviyo app have returned to normal, and we have restarted the background processing behind reporting and metrics. Some of this data may continue to appear out of date while it catches up. Campaign and flow sending are not affected. We will share another update as soon as we have more information.

IDENTIFIED 8 days ago - at 11/04/2026 07:31PM

Page load times remain improved. Some reporting and metrics may still show out-of-date data, and a subset of requests to our metrics and reporting APIs may return errors. Campaign and flow sending are not affected. We will share another update as soon as we have more information.

IDENTIFIED 8 days ago - at 11/04/2026 06:26PM

Page load times across the Klaviyo app have improved significantly, though some pages may still load slowly. To support this recovery, we temporarily paused some background processing, so reporting and metrics may show out-of-date data or errors. Campaign and flow sending are not affected. We will share another update as soon as we have more information.

INVESTIGATING 8 days ago - at 11/04/2026 05:35PM

Load times across the Klaviyo app continue to improve. Some reporting and metrics pages may show errors, appear blank, or display out-of-date data. Campaign and flow sending are not affected. We will share another update as soon as we have more information.

INVESTIGATING 8 days ago - at 11/04/2026 04:53PM

We are seeing early signs of improvement in load times across the Klaviyo app. Some pages, including reporting and metrics, may still be slow or show errors. Our team is continuing to investigate. We will share another update as soon as we have more information.

INVESTIGATING 8 days ago - at 11/04/2026 04:17PM

Some customers may be experiencing slow load times across the Klaviyo app. Our team is actively looking into the cause. We will share another update as soon as we have more information.

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