AWS Systems Manager Enhances Diagnosis for Unmanaged EC2 Instances
AWS Systems Manager now extends its diagnostic capabilities to identify six new issue categories that prevent Amazon EC2 instances and hybrid nodes from being managed. This enhancement helps users quickly pinpoint causes such as IAM permissions, SSM Agent versions, instance status checks, and OS configurations. The service provides specific, actionable guidance and optional Automation runbooks to resolve these issues, making it faster to bring unmanaged instances under control for patching, command execution, and inventory collection. This capability is generally available in all default AWS Regions, with standard Automation usage charges applicable.
Enhancements (1) ›
- Expanded diagnosis for unmanaged EC2 instances
AWS Systems Manager has broadened its diagnosis capability to include six additional categories of issues that prevent EC2 instances and hybrid-activated nodes from being managed. These new categories cover IAM permissions, SSM Agent version, instance status checks, operating system configuration, Default Host Management Configuration, and hybrid activation. The enhanced diagnosis provides specific, actionable causes and step-by-step guidance, including the option to run AWS Systems Manager Automation runbooks for direct remediation.
https://aws.amazon.com/about-aws/whats-new/2026/09/systems-manager-diagnoses-ec2-unmanaged/
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