In the documentation section https://docs.openshift.com/container-platform/4.13/windows_containers/creating_windows_machinesets/creating-windows-machineset-aws.html , in the Prerequisites sub-section it is recommending to use the following command to retrieve the Windows Server image AMI using AWS CLI:

Use the following aws command to query valid AMI images:
aws ec2 describe-images --region <aws region name> --filters "Name=name,Values=Windows_Server-2019*English*Full*Containers*" "Name=is-public,Values=true" --query "reverse(sort_by(Images, &CreationDate))[*].{name: Name, id: ImageId}" --output table

However, the Windows Server image Windows_Server-2019*English*Full*Containers* isn't available anymore in EC2. For that reason, it needs to be replaced by the Core image, having the following command in the docs:

aws ec2 describe-images --region <aws region name> --filters "Name=name,Values=Windows_Server-2019*English*Core*Base*" "Name=is-public,Values=true" --query "reverse(sort_by(Images, &CreationDate))[*].{name: Name, id: ImageId}" --output table

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