Investigating elevated delivery failures for some destinations

Update timeline

1. investigating Jul 02, 2026, 08:11 AM UTC

   We are investigating an increase in delivery failures (authentication errors) affecting a subset of Webhook and Amplitude destinations for some customers, beginning around 06:35 UTC on July 2. Event ingestion is not affected. We are actively investigating and will provide an update shortly.

2. identified Jul 02, 2026, 10:20 AM UTC

   Elevated delivery failures for Webhook destinations We've identified the root cause of the delivery failures (authentication errors / HTTP 401) affecting some Webhook destinations. Event ingestion is unaffected — your data is being received and processed normally; only delivery to these destinations is impacted. Our engineering team is actively working on a fix and remediation is underway. We will post the next update as soon as recovery is confirmed. Immediate fix on your side: Open your Webhook destination settings in the dashboard, re-enter the keys/values in the Headers section (the previous values were reset), and save. Event delivery will resume right away.

3. identified Jul 02, 2026, 11:55 AM UTC

   We are continuing to work on a fix for this issue.

4. identified Jul 02, 2026, 12:58 PM UTC

   We are continuing to work on a fix for this issue.

5. identified Jul 02, 2026, 02:14 PM UTC

   We have developed a fix for the authentication errors affecting delivery to some Webhook destinations, and we are now actively deploying it across affected customers. The remediation restores the reset header values automatically, so impacted destinations will resume delivery as the rollout reaches them.

6. resolved Jul 02, 2026, 03:23 PM UTC

   This incident has been resolved. If your workspace have Data Retention enabled, we are going to replay the events automatically.