SSO not working

Hi Experts,

We have a SSO configured between SAP Portal and another SAP BI portal. I used a par file to create the iView which contains the link for the SAP BI portal.The par file contains the design code for the iView and the link for the SAP BI Portal.

The SSO works well for the first time when I click on the link in the iView. However when I log off from the SAP BI Portal(which opens up in a new tab)

and click on the SAP BI Portal link again in my portal to open the BI Portal again, I get the login screen i.e the SSO does not work this time.

Can anybody please guide how can I go about it??

Thanks

Harshmeet Singh