# Klaviyo app slowness

- Provider: [Klaviyo](https://down.guide/klaviyo)
- Level: confirmed
- Impact: Partial outage
- lasted 1d 1h
- started 2026-11-04 16:17 UTC
- Klaviyo App, Analytics
- id: DWN-bf492f4080
- Official page: https://stspg.io/n489kx0tb7k1

## Root cause
> Our team is actively looking into the cause.

[Postmortem](https://stspg.io/n489kx0tb7k1)

## Updates from Klaviyo
### 2026-11-04 16:17 UTC: investigating
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.

### 2026-11-04 16:53 UTC: investigating
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.

### 2026-11-04 17:35 UTC: investigating
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 Some reporting and metrics pages may show errors, appear blank, or display out-of-date data.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.

### 2026-11-04 18:26 UTC: identified
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 To support this recovery, we temporarily paused some background processing, so reporting and metrics may show out-of-date data or errors.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.

### 2026-11-04 19:31 UTC: identified
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 Some reporting and metrics may still show out-of-date data, and a subset of requests to our metrics and reporting APIs may return errors.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.

### 2026-11-04 20:45 UTC: identified
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 Some of this data may continue to appear out of date while it catches up.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.

### 2026-11-04 22:02 UTC: identified
Reporting and metrics continue to catch up, so some data may still appear out of date.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.

### 2026-11-04 23:12 UTC: monitoring
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.

### 2026-11-05 17:31 UTC: resolved
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.

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