Zernio incident

WhatsApp: some message sends failed intermittently

Zernio experienced a minor incident on October 15, 2026 affecting Inbox & messaging (WhatsApp), lasting 3h 21m. The incident has been resolved; the full update timeline is below.

Started: Oct 15, 2026, 07:24 PM UTC
Resolved: Oct 15, 2026, 10:46 PM UTC
Duration: 3h 21m
Detected by Pingoru: Oct 15, 2026, 07:24 PM UTC

Affected components

Inbox & messaging (WhatsApp)

Update timeline

investigating Oct 15, 2026, 07:24 PM UTC

Between 15:00 and 16:45 UTC, some WhatsApp messages failed to send with temporary errors returned by WhatsApp's service. Sending has recovered and we are monitoring to confirm it stays stable. If a message failed in that window, retrying it after a short delay should work. Next update within 60 minutes.
resolved Oct 15, 2026, 10:46 PM UTC

This issue is resolved. Between 15:00 and 16:45 UTC, some accounts saw WhatsApp messages fail to send. If a message sent in that window still shows as failed, you can resend it.