To authenticate with the Active Directory server, Enrollment Agent, Smartcard Logon, and Smartcard User certificate templates must be available. Horizon 6 with View requires that the RSA public key has a minimum of 1024 bits. So you need to duplicate the existing template SmartCard User and change the RSA public key size of the new certificate.

If you already have these templates, you can skip this step.

1. Duplicate existing template SmartCard User: refer to Creating Certificate Templates. Make sure that the RSA public key size is 1024 at least.
2. Log in to the Active Directory machine and open the Certification Authority tool to new certificate to issue.
3. In the left pane, expand the CA directory.
4. Right-click Certificates and select New > Certificate Template to Issue .
5. In the Enable Certificate Templates dialog box, select Enrollment Agent, Smartcard Logon , and the new certificate which is duplicated from Smartcard User and click OK.