# Create an App Block with an Existing App Package
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You can use your existing application package (VHD) with WorkSpaces Applications packaging to create WorkSpaces Applications app blocks. To do this, copy your application package (VHD) file from the source Amazon S3 bucket to another destination Amazon S3 bucket. The destination bucket can be in a different region. 

**To create an app block with existing app package**

1. Open the WorkSpaces Applications console at [https://console.aws.amazon.com/appstream2](https://console.aws.amazon.com/appstream2).

1. From the left-hand navigation menu, choose **Applications Manager**, **App blocks**, and **Create app block**.

1. For app block packaging, select **WorkSpaces Applications**.

1. For **App block details**, type a unique name identifier for the app block. Optionally, you can also specify the following:
   + **Name** – A unique name for the app block.
   + **Display name** (optional) – A friendly name for the app block.
   + **Description** (optional) – A description for the app block.

1. (Optional) An app block with WorkSpaces Applications packaging doesn't need a setup script. You can optionally provide post-installation steps the following **Advanced Options**:
   + For **Post setup script object in S3**, either enter the Amazon S3 URI that represents the post setup script object, or choose **Browse S3** to navigate to your Amazon S3 buckets and find the setup script object.
   + For **Post setup script executable**, enter the executable needed for your post setup script.
**Note**  
If your post setup script can execute directly, enter the filename of the post setup script. If your post setup script relies on another executable (for example, Microsoft PowerShell) to execute, enter the path to that executable.  
Path to Microsoft PowerShell on Microsoft Windows:  
`C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe`  
Optionally, for **Post setup script executable arguments**, enter in the arguments that need to be provided to the setup script executable to execute your setup script.
**Note**  
If you are using a Microsoft PowerShell script, you must specify the "-File" parameter with the name of your post setup script as an executable argument. Additionally, ensure that the Execution Policy allows your script to be run. To learn more, see [about\$1Execution\$1Policies](https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_execution_policies?view=powershell-7.2) and [What is PowerShell?](https://docs.microsoft.com/en-us/powershell/scripting/overview?view=powershell-7.2).  
For **Execution duration in seconds** under **Script settings**, enter the timeout duration for your setup script.
**Note**  
The execution duration in seconds is how long WorkSpaces Applications waits for the post setup script to run before continuing. If your post setup script doesn’t complete within this duration, an error is displayed to your user and the application will attempt to launch. The setup script is terminated after the execution duration has elapsed.

1. Choose **Use existing app block application file** under **Import settings**. For **S3 Location**, you can enter the Amazon S3 URI for the object in an Amazon S3 bucket that represents the application package (VHD), Or, choose **Browse S3** to navigate to your Amazon S3 buckets and select the object in an Amazon S3 bucket. The list of Amazon S3 buckets is global and lists all the buckets across all regions. Make sure you select the bucket in the region where you want to create your app block. 

1. Choose **Next**.

1. Review the information that you entered, and choose **Create app block**.

At this point your app block resource is created and in the **Active** state.