Unexpected termination of EC2 instance

Hello,

To see the scheduled events that occurred on the Instance, preview the Personal Health Dashboard or through the EC2 Console View scheduled events

When there is a scheduled event on an Instance, AWS sends notification email on the registered root account email.

After the Stop and Start of the Instance it moves the Instance to a new underlying healthy host. The instance should be passing health check now.

In order to automatically handle such events in future, I suggest configuring the CloudWatch alarm action based on the system error metric. This way, when the instance experiences system status check failures, CloudWatch will stop/start the instance to reduce the downtime of an instance Create alarms that stop, terminate, reboot, or recover an instance.

For your reference, please review AWS article Why is my EC2 Windows instance down with a system status check failure or status check 0/2 for the steps to be taken when the instance is unreachable and is failing system status health checks.

That said, you can defer the scheduled event and reschedule it to another convenient date Reschedule a scheduled event

Should you need further clarification, reach out to AWS Premium Support