At the start, we saw not every application can use the AD FS environment. It should be a Claim aware application. I have an application called myapp.rebeladmin.com already set up. In the configuration, I set it up to use the existing STS and added new AD FS server's metadata URL, which is https://adfs.rebeladmin.com/federationmetadata/2007-06/
federationmetadata.xml.
If it's successful AD FS install the metadata XML should be able to view using web browser. If it cannot load, you need to check it before this step.
Once the application is configured, when I go to my application, which is https://myapp.rebeladmin.com/myapp (internally), I can see the following error. It was expected as the AD FS setup does not know about my application yet:
