SAP SNC with SSO - No user exist with SNC name "p:SECURE LOGIN ENCRYPTION ONLY MODE"

Hello Experts,

We are trying to set up SAP SSO.

When I try to connect to my system using SNC with SSO, I have the following error message in the bottom :

No user exist with SNC name "p:SECURE LOGIN ENCRYPTION ONLY MODE"

In the traces of SAP Secure Login Client 3, we have the following lines :

Server accepts: Kerberos: no
X.509: yes
EncryptionOnly: yes

Client configuration allows:
Kerberos: yes
X.509: no

I read the SAP note 2554187 - SAP Single Sign-On - No user exist with SNC name "p:SECURE LOGIN ENCRYPTION ONLY MODE"
I checked the case 1 of the note and the profile parameters snc/gssapi_lib and spnego/krbspnego_lib are in the instance profile and they pointing to the same library : $(DIR_EXECUTABLE)$(DIR_SEP)$(FT_DLL_PREFIX)sapcrypto$(FT_DLL)

Do you have an idea ? Thank you very much for your help.