SAP Ticketverifier Error: invalid ticket + configuring SSO between EP 7.4 and Dominos 8.5.2

Hi,

I am trying to configure SSO between  SAP Netweaver portal 7.4 and Dominos 8.5.2 FP4.

I have performed the below activities:

- Copied three .dll files ( ds_ticket.dll, sapsecu.dll, wpsso_v3.dll) to c:\windows\system32 directory

- Copied SAPLogonTicketKeypair-cert.crt file of Portal to d:\lotus\domino\sap directory

- Updated notes.ini file with MySapPsePath=d:\lotus\domino\sap\SAPLogonTicketKeypair-cert.crt

Then restarted http task. But while but SSO is failing with below error message;

SSO Ticket len: 565 Cookie len: 587

Found sap_user = 99989

sap_user: 99989 Ticket is invalid or expired

SAP Ticketverifier Error: invalid ticket.

SAP Ticketverifier Message: falling back to Lotus Domino Authentication.

Is there something I am missing while configuring SSO ? SAPLogonTicketKeypair-cert.crt seems to be valid as SSO is working fine with other SAP Portal servers.

Appreciate your expert help and knowledge in this regard to resolve this issue.

Thanks,

MD