Amazon Elastic Compute Cloud — Paris: [RESOLVED] Increased Connectivity Issues

Update timeline

1. monitoring Apr 27, 2026, 11:27 AM UTC

   We are investigating instance connectivity issues in a single Availability Zone (euw3-az2) in the EU-WEST-3 Region.

2. monitoring Apr 27, 2026, 12:05 PM UTC

   Between 3:58 AM and 4:40 AM PDT, we experienced increased error rates and increased launch failures for EC2 instances in a single Availability Zone (euw3-az2) in the EU-WEST-3 Region. During this time, customers attempting to launch new EC2 instances in the affected Availability Zone would have experienced launch failures. Additionally, a subset of existing EC2 instances and EBS volumes in this Availability Zone were impacted and became unreachable. We have identified the root cause to be a loss of power to infrastructure within the affected Availability Zone. Engineers were engaged at 4:02 AM and immediately began working to restore power and assess the scope of impact. By 4:20 AM, power was successfully restored to the affected infrastructure. We then focused our efforts on recovering impacted EC2 instances and EBS volumes. By 4:40 AM, all impacted EC2 instances and EBS volumes had been fully recovered and were operating normally. No additional action is required for EC2 instances and EBS volumes that were impacted during the power loss event, as these have been fully recovered. The issue has been resolved and the service is operating normally.