AWS Directory Service
Administration Guide (Version 1.0)

Seamlessly Join a Windows EC2 Instance

This procedure will seamlessly join a Windows EC2 instance to your 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, select the same region as the existing directory.

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

  4. On the Step 1 page, select 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, select one of the public subnets in your VPC. The subnet you select 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, select 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. Select the IAM role that has permission from the IAM role list. If you choose this option, you will 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, and then on the Roles page, do the following:

      1. Select the Create role button.

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

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

      4. In the list of polices, select the AmazonEC2RoleforSSM policy, and then select Next.

      5. In Role name, type a name for your new role (For example, EC2DomainJoin), in Role description type a description (optional), and then select the Create role button.

  7. Go back to the Step 3 page, for IAM role, choose the refresh icon next to the IAM role field. Your new role should be visible in the drop down menu. Select it, and leave the rest of the settings on this page with their default values, and then select Next.

  8. Continue through the remaining pages in the wizard using your preferred settings.


    The security group you select for the instance (on the Step 6 page) must allow remote access to the instance from your network.