Klaviyo: Catalog Webhook Processing Delays
Klaviyo's status page listed this on 9 July 2026. Lasted 43.2 h, filed against Shopify, WooCommerce, BigCommerce, Customer Hub, Magento and Other. This is their record, not a measurement of ours.
What happened
Started
Resolved
Lasted43.2 h
What failedShopify, WooCommerce, BigCommerce, Customer Hub, Magento and Other
Their impactMinor
Regions: their page does not say which. Ours checks from three cities, and the screen we saw is on our own incident pages, where there is one.
What Klaviyo said
On their page: Catalog Webhook Processing Delays
Klaviyo's status page: “As of 9:45 PM US/Eastern on July 8, 2026, we paused processing new webhooks for product catalogs while we continue working on a fix. Catalog data, including in Templates and Customer Hub, will remain out of date until syncing resumes. Our engineering team is actively working to restore realtime catalog updates. We'll provide updates as soon as more information is available.”Identified
Klaviyo's status page: “As of 11:13 PM US/Eastern on July 8, 2026, we have resumed processing webhooks. This means all new webhooks from integrations which use webhooks to update products are now syncing in real time. Our Engineering Team is working implement a repair to catch up on any product update webhooks from during window of impact (9:45 PM and 11:13 PM US/Eastern July 8, 2026). We will confirm once the repair has been complete and the incident has been fully resolved.”Monitoring
Klaviyo's status page: “Product updates from ecommerce integrations are continuing to sync normally in real time. A background repair to fully update records from the earlier impact window (9:45 PM to 11:13 PM US/Eastern on July 8, 2026) is still in progress. We will confirm once this repair is complete.”Monitoring
Klaviyo's status page: “The repair to catch up on product update webhooks from the window of impact has been completed, and affected product data is up to date. This incident has been resolved.”Resolved
What our own check saw
Nothing of ours failed that day, or we were not checking Klaviyo yet.
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