Zernio incident

WhatsApp: some message sends failed intermittently

Resolved after 3 hours 21 minutes, affecting section-354249 (WhatsApp), on October 15, 2026.

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.

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

section-354249 (WhatsApp)

Update timeline

  1. 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.

  2. 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.

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