AWS Mainframe Modernization Service (Managed Runtime Environment experience) is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).
# Restart an AWS Mainframe Modernization runtime environment
Use the AWS Mainframe Modernization console to restart an AWS Mainframe Modernization runtime environment. When you restart a runtime environment, the billing for the environment will be resumed.
## Restart a runtime environment
To restart an AWS Mainframe Modernization runtime environment, you follow similar steps as the stop environment section.
**To restart a runtime environment**
1. Open the AWS Mainframe Modernization console at [https://console.aws.amazon.com/m2/](https://console.aws.amazon.com/m2/).
1. In the AWS Region selector, choose the Region where the environment that you want to restart was created.
1. On the **Environments** page, choose the environment that you want to restart.
1. On the details page for the environment, choose **Actions**, and then choose **Edit environment**.
**Note**
The desired capacity for standalone environment can only be updated to 1. To restart a runtime environment, you can only choose to restart immediately.
1. On the **Edit environment page**, find **Resources section**, and update the desired capacity from zero to the required capacity.
1. Choose **Next**.
1. In **When to apply these changes**, choose **Immediately**. Then choose **Update environment**.
You see a message when the environment capacity is updated and the environment is restarted.