Hi JJ66395,
Welcome to Centrify.
From the information given above, it sounds like the issue is on the server itself as the access was rejected by the server. As Centrify is helping to present the credential inside the smartcard and the access control will be on the server end. You might need to contact the administrator of the server with session reference number to help to resovle this issue. Hope this helps. Thanks!
Best Regards,
Albert