I want to migrate my Amazon Elastic Compute Cloud (Amazon EC2) Windows instance to latest generation instance type.
Before you migrate your Amazon EC2 instance, complete the following steps:
To migrate an Amazon EC2 Windows instance to the latest generation instance type, see Migrate to latest generation instance types.
Troubleshoot an unreachable instance
How can I troubleshoot an EC2 Windows instance that is unreachable or can't reach the DNS after upgrading the drivers?