PubNub outage, 20 October 2025
Increased latency and errors observed in US-West
- Started
- Resolved
- 20 Oct 2025, 23:48 UTC (after 10 h 11 min)
- Impact
- Minor
- Affected
- Publish/Subscribe Service, North America Points of Presence, Presence Service, Access Manager Service
Last update from PubNub
### **Problem Description, Impact, and Resolution** On October 20th, 2025 at 07:06 UTC, our monitoring systems alerted us to elevated error levels across multiple PubNub services in the IAD region \(US-East\). Some customers may have experienced increased error rates and latency, as well as intermittent issues with Presence service availability across IAD \(US-East\), SJC \(US-West\), and HND \(AP-Northeast\). We quickly determined the issue was caused by a broader infrastructure outage affecting our cloud provider \(AWS\) in the IAD region. We initiated regional failover procedures and re-routed new connections to alternate regions. However, due to undefined steps in some of our failover...
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