The Federation Service Proxy was not able to update trust information from the Federation Service. The Federation Service's ...

The Federation Service Proxy was not able to update trust information from the Federation Service. The Federation Service's Secure Sockets Layer (SSL) server certificate could not be validated. 
Federation Service URL: %1 

User Action 
Verify that the Federation Service's SSL server certificate chains to a root certificate that is in the Local Computer Trusted Root Certification Authorities certificate store in the Federation Service Proxy. 

Verify that the SSL server certificate is neither expired nor revoked. 

Verify that the SSL server certificate subject matches the host name portion of the Federation Service Uniform Resource Locator (URL).