Between 12:05 UTC and 12:35 UTC, we experienced a high error rate and longer session start times for Desktop and Virtual Device tests in the US-West-1 data center. The issue has been resolved. All services are fully operational.

### **Dates:** Wednesday, September 23rd 2026, 12:05 UTC - 12:35 UTC. ### **What happened:** Virtual Device Cloud testing availability gradually decreased in the US-West-1 data center. ### **Why it happened:** A product defect was introduced causing Virtual Device Cloud testing sessions to fail to start. ### **How we fixed it:** Rollback to a stable version. ### **What we are doing to prevent it from happening again:** Strengthen pre-deployment validation and reassess configuration rollout strategies.