PubNub outage, 25 August 2026
Potential for some missed messages for subscribers in US East PoP
- Started
- Resolved
- 25 Aug 2026, 14:51 UTC (after 1 h 28 min)
- Impact
- Minor
- Affected
- Publish/Subscribe Service, North America Points of Presence
Last update from PubNub
### **Problem Description, Impact, and Resolution** On Tuesday, August 25th, 2026, at 12:10 UTC, our internal monitoring alerted us to an issue where a very small subset of messages within one availability zone of one region \(our US East point of presence\) may not have been immediately delivered to subscribers in that same region. All messages were persisted normally within PubNub Persistence service, **thus no message data was lost.** Traffic to or from any other region or AZ was not affected, and no other PubNub services were affected. No customers reported impact. ### **Root Cause** During planned internal load testing, a group of internal routing servers was removed from service. D...
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