Description—When activating your Forefront UAG configuration when using AD FS 2.0 you might see the following message "The AD FS 2.0 application 'application_name' in trunk 'trunk_name' is not configured to allow unauthenticated access. This is required when using federated trunk authentication."
Cause—This message appears when you activate the configuration if you manually publish or modify an AD FS 2.0 application that you are using for trunk authentication and you disable unauthenticated access to the AD FS 2.0 server.
Note: If you use AD FS 2.0 for trunk authentication, you must allow unauthenticated access to the AD FS 2.0 application.
Solution—To allow unauthenticated access to the AD FS 2.0 application: