Note: This step is only necessary if WS-Trust is being used.
  1. On the Select XML Encryption Certificate screen, select AES-256 as the Block Encryption Algorithm.
  2. Select the encryption certificate for Dynamics CRM claims encryption from the drop-down list.
    This is the same encryption certificate used in Dynamics CRM configuration.
    Note: If AES-256 is unavailable, make sure the high-level encryption libraries were imported correctly.