Major incident

OneSignal: Apple push notifications failing in about 3% of cases

Current status of OneSignal: Operational — live OneSignal status

Timeline

1. Aug 4, 2026, 17:20 UTC
   investigating
   **What’s happening:** Apple push notifications are failing in about 3% of cases. "Unknown delivery error" or "APNS failed to provide a response" error responses may be seen. **Who’s affected:** • Customers using Apple Push Notifications **Current Status:** We are investigating the issue and will provide an update in 20
2. Aug 4, 2026, 18:45 UTC
   identified
   We have identified the root cause and are working towards a resolution. There was a slight change in how Apple's push notification connections work. We will provide another update in 20 minutes.
3. Aug 4, 2026, 18:46 UTC
   monitoring
   We have applied a mitigation that should resolve the impact. We are monitoring to confirm effectiveness. We will provide another update in 20 minutes.
4. Aug 4, 2026, 19:24 UTC
   resolved
   The issue has been resolved. All impacted systems are now operating normally.

Updates as published by OneSignal.