AWS Systems Manager now diagnoses more issues that cause EC2 instances to be unmanaged
Today’s signal AWS What’s New recently reported AWS Systems Manager now diagnoses more issues that cause EC2 instances to be unmanaged. Published context: September 9, 2026. Today, AWS Systems Manager extends its diagnosis capability to identify six additional categories of issues that can prevent Amazon EC2 instances and hybrid-activated nodes from becoming managed by Systems Manager. An instance must be managed by Systems Manager before you can patch it, run commands, connect with Session Manager, or collect inventory, and whe ...