Resolved after 30 minutes, on September 23, 2026.
### **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.
Update timeline
- resolved Sep 23, 2026, 12:45 PM UTC
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.
- postmortem Oct 21, 2026, 05:00 PM UTC
### **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.
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