The Federation Service has detected a discrepancy between its signing and verification methods. If this condition is caused ...

The Federation Service has detected a discrepancy between its signing and verification methods. If this condition is caused by a change in trust policy, the Federation Service will continue to use the old trust policy until the condition is resolved. If this condition occurs at startup, the Federation Service will not be able to service requests until the condition is resolved. 
Signing certificate thumbprint: %1 

The signing method identifies a Subject Key Identifier (SKI) which is not recognized by the verification method. 
SKI: %2 

User Action 
If a signing method is to be identified by the SKI, the verification method must contain the signing certificate. Add the signing certificate to the verification certificate list.