The AD FS Web Agent for Windows NT token-based applications could not contact the Federation Service during startup. Federation ...

The AD FS Web Agent for Windows NT token-based applications could not contact the Federation Service during startup. 
Federation Service URL: could not be obtained 

The Web agent will not be able to authenticate users until it can retrieve trust information from the Federation Service. 

User Action 
Ensure that the Uniform Resource Locator (URL) for the Federation Service is properly configured and that the Federation Service can be contacted from this Web server. 

Ensure that this Web server is joined to an Active Directory Domain Services domain.