Cannot start app "application name" Xendesktop/ Xenapp 7.5/7.6/7.7/7.8

Issue:

Working on Citrix XenApp 7.7 - Configured Storefront, Delivery Controller and Configured Server VDA, Installed application and Created Machine Catalog and delivery group.I can see the machine as registered in citrix studio.
Now when I am tried to launch the application through store front url, getting an error called - Cannot Start App "Application name"?

In our case, I implemented the following solution as I saw the following error message in one of the delivery controller

Event ID is 2100

General :

The Citrix Broker Service failed to validate a user's credentials on an XML service.
Verify the trust relationships between your domains.

Error details:
User:  ''
Error: 'AccessDenied'
Message: 'ID only credentials received but TrustRequestsSentToTheXmlServicePort=false'
Stack Trace: ''

Solution I implemented is as follows:

Logged into both Citrix Delivery Controllers and Launch Powershell from Citrix Studio

Ran the following commands on both delivery controllers.

1. Add-pssnapin Citrix*
2. Set-brokersite -TrustRequestsSentToTheXmlServicePort $True
3. Get-BrokerSite

Now launched the application without any issues from storefront URL.

Thank you
Kesavpani Patnala