The Hyland IdP server may fail to start and the exception log contains a message that a certificate cannot be retrieved, such as: Unable to retrieve certificate from thumbprint.
If you are running the Hyland IdP under Microsoft Windows Server 2012 R2, this is a known issue that is encountered when more than one certificate needs to be loaded.
You can use the same certificate in all configuration instances as a workaround to this issue. For example, if you are using a SAML provider that requires both a signing certificate and an encryption certificate, using the same certificate for both configuration values prevents the issue.