title: Can't connect to AWS Windows or Linux instances anymore
body: <p>I've been using AWS free tier for a while. I can usually create new instances and connect to them with no issues. One week ago I started getting the Session Manager message in bold below while trying to connect.</p>
  <p>I've did some troubleshooting, tried every step suggest by AWS but still no luck. I can still create instances but can't connect. The problem isn't related to a specific instance, it's impacting any instance I create. I've tried rebooting but no change and the instance/s do not appear in System Manager Session Manager console.</p>
  <p><strong><strong>We weren't able to connect to your instance. Common reasons for this include:</strong>
  SSM Agent isn't installed on the instance. You can install the agent on both Windows instances and Linux instances.
  The required IAM instance profile isn't attached to the instance. You can attach a profile using AWS Systems Manager Quick Setup.
  Session Manager setup is incomplete. For more information, see Session Manager Prerequisites.</strong>**</p>