Critical incident

Klaviyo: Login and page loading issues

Affected: Klaviyo App

Current status of Klaviyo: Operational — live Klaviyo status

Timeline

1. Oct 8, 2026, 15:00 UTC
   investigating
   We are investigating reports that some customers are unable to log in to Klaviyo or are seeing pages load slowly or not at all. Our team is actively working to restore normal access. We will share another update as soon as we have more information.
2. Oct 8, 2026, 15:29 UTC
   investigating
   We are continuing to investigate issues preventing some customers from logging in to Klaviyo or loading pages in the app. We have not seen any impact to campaign or flow sending. We will share another update as soon as we have more information.
3. Oct 8, 2026, 15:49 UTC
   identified
   The issue has been identified and a fix is being implemented.
4. Oct 8, 2026, 16:06 UTC
   monitoring
   A fix has been deployed, and customers should now be able to log in to Klaviyo and load pages normally. If you were logged out during this incident, you may need to log in again. We continue to monitor closely and appreciate your patience throughout this incident.
5. Oct 8, 2026, 16:13 UTC
   resolved
   Customers can now log in to Klaviyo and load pages normally, and the system remains stable. This incident has been resolved.

Updates as published by Klaviyo (original).