Major incident

PubNub: Certificate Issue Causing Potential Connection Issues

Affected: Publish/Subscribe Service, Functions Service, Storage and Playback Service, Vault, Stream Controller Service, Key Value store, Presence Service, Scheduler Service, Access Manager Service, DNS Service, Mobile Push Gateway, App Context Service

Current status of PubNub: Operational — live PubNub status

Timeline

1. Oct 22, 2026, 01:11 UTC
   investigating
   An error in updating security certificates may be causing some clients to experience connection issue. We are investigating and will update as we find out more.
2. Oct 22, 2026, 01:17 UTC
   investigating
   We are continuing to investigate this issue.
3. Oct 22, 2026, 01:55 UTC
   identified
   We have identified the issue and are well into remediation. Please reach out to [email protected] if you are experiencing issues.
4. Oct 22, 2026, 02:12 UTC
   monitoring
   We have completed remediation for this issue. Impact was minor: only one end user reported an issue, but we are monitoring for additional impact. Please reach out to [email protected] if you have a related issue to report.
5. Oct 22, 2026, 02:47 UTC
   resolved
   We have had no additional reports related to this issue. If you feel you were impacted, please contact [email protected]. A post-mortem will follow.

Updates as published by PubNub (original).