Hi Mangul,

Thank you for chiming in and providing the troubleshooting steps.

First note, I am using the very same Gemalto.NET card and OMNIKey reader for Windows and it works perfectly fine for me when logging in using Horizon View client.

So the certificate stored at this smart card is valid and should work alike for Linux as well.

Do I need to somehow explicitly install it (the user's certificate, not the CA which is already in a trusted store) to the Linux desktop prior to launching View client?

Next, I have turned the additional logs on, publishing the log snippet below

Last (not least) I have updated to the new Horizon Client v3.5 but still experiencing the same issue with it as well.

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_get_certificates:740: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.437-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_get_certs:1714: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_get_certs:1733: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_get_certificates:813: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_get_certs_thread:1612: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_module_get_slots:304: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| 1 slots with tokens (Gemalto .NET PKCS11)

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_module_get_slots:338: Exit

2015-09-04 16:19:26.438-07:00: vmware-view 28349| [All] cdk_cryptoki_session_new:398: Entry

2015-09-04 16:19:26.438-07:00: vmware-view 28349| Requesting token info from Gemalto .NET PKCS11 slot 1

2015-09-04 16:19:26.540-07:00: vmware-view 28349| Requesting session with Gemalto .NET PKCS11 token .NET #0AE329216DA4F3EE

2015-09-04 16:19:26.543-07:00: vmware-view 28349| Opened session for token [.NET #0AE329216DA4F3EE] hw v0.0 fw v0.0

2015-09-04 16:19:26.543-07:00: vmware-view 28349| [All] cdk_cryptoki_session_new:438: Exit

2015-09-04 16:19:26.543-07:00: vmware-view 28349| [All] cdk_cryptoki_session_get_certs:1441: Entry

2015-09-04 16:19:26.543-07:00: vmware-view 28349| [All] cdk_get_all_sc_certs:1269: Entry

2015-09-04 16:19:26.610-07:00: vmware-view 28349| Empty loginCerts list, FAILURE

2015-09-04 16:19:26.610-07:00: vmware-view 28349| [All] cdk_get_all_sc_certs:1385: Exit

2015-09-04 16:19:26.610-07:00: vmware-view 28349| Unable to retrieve smart card certificates

2015-09-04 16:19:26.610-07:00: vmware-view 28349| [All] cdk_cryptoki_session_get_certs:1455: Exit

2015-09-04 16:19:26.610-07:00: vmware-view 28349| Closing session for token [.NET #0AE329216DA4F3EE] (Gemalto .NET PKCS11)

2015-09-04 16:19:26.613-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_get_certs_cb:652: Entry

2015-09-04 16:19:26.613-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_get_certs_cb:664: Exit

2015-09-04 16:19:26.613-07:00: vmware-view 28349| [All] cdk_cryptoki_get_certs_thread:1677: Exit

2015-09-04 16:19:26.613-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_no_certs:522: Entry

2015-09-04 16:19:26.613-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1669: Entry

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_wrap_label_notify_cb:1674: Exit

2015-09-04 16:19:26.614-07:00: vmware-view 28349| [All] cdk_smartcard_auth_dialog_no_certs:583: Exit