Prerequisites - Amazon Elastic Compute Cloud
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).


Before you set up Windows fast launch, verify that you've met the following prerequisites that are required to create snapshots for the AMIs in your Amazon Web Services account:

  • If you don't use a launch template to configure your settings, ensure that a default VPC is configured for the Region in which you use Windows fast launch.


    If you accidentally delete your default VPC in the Region where you plan to configure Windows fast launch, you can create a new default VPC in that Region. To learn more, see Create a default VPC in the Amazon VPC User Guide.

  • To specify a non-default VPC, you must use a launch template when you configure Windows fast launch. For more information, see Use a launch template when you set up Windows fast launch.

  • If your account includes a policy that enforces IMDSv2 for Amazon EC2 instances, you must create a launch template that specifies the metadata configuration to enforce IMDSv2.

  • To change the settings for Windows fast launch, your Amazon Web Services account must own the Windows AMI.

  • Private Windows fast launch AMIs must support user data script execution.

  • To configure Windows fast launch for an AMI, you must create the AMI using Sysprep with the shutdown option. The Windows fast launch feature doesn't currently support AMIs that were created from a running instance.

    To create an AMI using Sysprep, see Create a custom Windows AMI.

  • The default quota for Max parallel launches across all AMIs in an Amazon Web Services account is 40 per Region. You can request a Service Quotas increase for your account, as follows.

    1. Sign in to the Amazon Web Services Management Console and open the Service Quotas console at

    2. In the navigation pane, choose Amazon Web Services.

    3. In the search bar, enter EC2 Fast Launch, and select the result.

    4. Select the link for Parallel instance launches. This takes you to the Parallel instance launches service quota detail page.

    5. Choose Request quota increase.

    For more information, see Requesting a quota increase in the Service Quotas User Guide.