AWS Directory Service
Administration Guide (Version 1.0)

Seamlessly Join a Windows EC2 Instance

This procedure seamlessly joins a Windows EC2 instance to your Simple AD directory.

To seamlessly join a Windows EC2 instance

  1. Sign in to the AWS Management Console and open the Amazon EC2 console at

  2. From the region selector in the navigation bar, choose the same region as the existing directory.

  3. From the Amazon EC2 console dashboard, choose Launch Instance.

  4. On the Step 1 page, choose Select for the appropriate AMI.

  5. On the Step 2 page, select the appropriate instance type, and then choose Next.

  6. On the Step 3 page, do the following, and then choose Next :

    1. For Network, choose the VPC that your directory was created in.

    2. For Subnet, choose one of the public subnets in your VPC. The subnet that you choose must have all external traffic routed to an internet gateway. If this is not the case, you won't be able to connect to the instance remotely.

    3. For Auto-assign Public IP, choose Enable (if the subnet setting is not set to enable by default). For more information about public and private IP addressing, see Amazon EC2 Instance IP Addressing in the Amazon EC2 User Guide for Linux Instances.

    4. For Domain join directory, choose your domain from the Domain join directory list. To seamlessly join the instance, you also need an IAM role that has the AmazonEC2RoleforSSM managed policy attached to it. From the IAM role list, choose the IAM role that has this policy. If you choose this option, you do not have to manually join the instance to the domain as that will be done for you when the instance is launched.


      This option is only available for Windows instances. Linux instances must be manually joined to the directory as explained in Manually Join a Linux Instance.

    5. For IAM role, optionally choose the Create new IAM role link to create a new IAM role and attach the AmazonEC2RoleforSSM policy. Then on the Roles page, do the following:

      1. Choose Create role.

      2. Under AWS service, choose the EC2 link, and then click Next.

      3. Under Select your use case, choose EC2, and then choose Next.

      4. In the list of policies, select the EC2 Role for Simple Systems Manager policy (AmazonEC2RoleforSSM), and then choose Next.

      5. For Role name, enter a name for your new role (such as EC2DomainJoin). For Role description, enter a description (optional). Then choose Create role.

  7. Go back to the Step 3 page. For IAM role, choose the refresh icon next to IAM role. Your new role should be visible in the menu. Choose it and leave the rest of the settings on this page with their default values. Then choose Next.

  8. On both the Step 4 and Step 5 pages, leave the default settings or make changes as needed, and then choose Next.

  9. On the Step 6 page, select a security group for the instance that has been configured to allow remote access to the instance from your network, and then choose Review and Launch.