What is the proper format for a URL for automatically starting an application for a user

Question

I'm using AppStream 2.0 elastic instances. I have one application. When my users log in (I'm using USERPOOL), I don't want them to have to click the application icon in order to start the application, since there is only one application. I want it to automatically start my application. I've found multiple references to the proper format for the URL to do this, and none of them work. My latest attempt is this, which doesn't work:

https://appstream2.us-east-1.amazonaws.com/open/us-east-1/appstream2.0/MyFleetName/MyStackName?user=MyUserName&app=MyAppName

What do I need to do to make this work? Thanks.

https://appstream2.us-east-1.amazonaws.com/open/us-east-1/appstream2.0/MyFleetName/MyStackName?user=MyUserName&app=MyAppName

What do I need to do to make this work?  Thanks.

re:Post Agent · Answer

The URL format you're using is not correct for automatically starting an application in AppStream 2.0. When using AppStream 2.0 with User Pool authentication, you don't directly construct the URL for launching applications. Instead, the process works differently.

For User Pool authentication, AppStream 2.0 sends an email to users when they are created or assigned to a stack. This email contains a URL that the users should use to access their applications. When users click on this URL, enter their credentials, and choose "Connect", they are directed to the AppStream 2.0 interface.

To automatically launch an application when a user logs in, you need to configure this behavior in your AppStream 2.0 stack settings, not through a URL. Unfortunately, the provided information doesn't specify how to set up automatic application launch for User Pool authentication.

If you need more control over the application launch process, you might want to consider using the programmatic authentication method instead of User Pool. With programmatic authentication, you can use the CreateStreamingURL API operation to generate a temporary URL for starting an AppStream 2.0 streaming session. This method allows you to pass session context information, which could potentially be used to specify an application to launch automatically.

However, it's important to note that switching to programmatic authentication would require significant changes to your authentication flow and would involve writing code to make API calls to AWS.

If you want to stick with User Pool authentication, I recommend reaching out to AWS support for specific guidance on how to configure automatic application launch for your use case, as the available information doesn't provide a clear solution for this scenario with User Pool authentication.  
**Sources**  
[AppStream 2.0 User Pool - Amazon AppStream 2.0](https://docs.aws.amazon.com/appstream2/latest/developerguide/use-client-start-streaming-session-user-pool.html)  
[CreateStreamingURL - Amazon AppStream 2.0](https://docs.aws.amazon.com/appstream2/latest/APIReference/API_CreateStreamingURL.html)  
[Authentication - Best Practices for Deploying Amazon AppStream 2.0](https://docs.aws.amazon.com/whitepapers/latest/best-practices-for-deploying-amazon-appstream-2/authentication.html)

What is the proper format for a URL for automatically starting an application for a user

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