Fiori Launchpad login

I upgraded BI 4.2 SP3 to 4.2 SP5. I see the login screen but after I enter my logon credentials > hit the login button, the login screen comes back with no errors.

https://<lb url>/BOE/BILaunchpad

In CMC, Restful WS > properties its set to: https://<LB url>/biprws and this URL works fine in the browser.

RWS is deployed on the tomcat server.

Any idea? Thanks!