# Test Dynamic App Providers (Optional)
<a name="test-dynamic-app-providers"></a>

After you enable your dynamic app provider on an image builder, you can test the provider to verify that it functions as expected. To do so, perform the following steps before you finish creating the image.

**To test dynamic app providers**

1. Do one of the following: 
   + If you are already connected to the image builder on which you enabled dynamic app providers and you are logged on as** Administrator,** you must switch to an account that does not have local administrator permissions on the image builder. To do so, in the upper right corner of the image builder session toolbar, choose **Admin Commands**, **Switch User**.   
![\[Admin Commands dropdown menu with Switch User option highlighted.\]](http://docs.aws.amazon.com/appstream2/latest/developerguide/images/admin-commands-switch-user.png)
   + If you are not already connected to the image builder, connect by either [using the WorkSpaces Applications console](managing-image-builders-connect-console.md) (for web connections only) or [creating a streaming URL](managing-image-builders-connect-streaming-URL.md) (for web or WorkSpaces Applications client connections).
**Note**  
When you are prompted to sign in, choose **Directory User**, and sign in with a domain account that does not have local administrator permissions on the image builder. 

1. On the image builder desktop, open Image Assistant, if it is not already open. 

1. On the **Test Apps** page, if you specified any applications in the image that are not from the dynamic app provider, they display first in the list. It may take a few moments for applications from dynamic app providers to appear in the list.

1. Choose an application from the list and open it to verify that it functions as expected.

1. After you finish testing, in the lower right corner of the **Test Apps** page, choose **Switch user**. 

1. Choose **Administrator**, and log back into the image builder.

1. Follow the necessary steps in Image Assistant to finish creating your image. For information about how to create an image, see [Tutorial: Create a Custom WorkSpaces Applications Image by Using the WorkSpaces Applications Console](tutorial-image-builder.md).

   WorkSpaces Applications automatically optimizes the agents that are specified in the **Agents.json** configuration file.