SSO doesn't work with WebGUI

Hi,

I'm facing the following problem.

I've managed to get SSO working with WinGUI based on SAPLOGONTICKETS. All works fine.

When i switch to WebGUI, all i get is a logon screen where i have to fill in UserID and Password.

I use the same backend system as with WinGUI.

I've activated the service for the WebGUI in SICF and set the following parameters:

~MYSAPCOMUSESSO2COOKIE = 1

~COOKIES = 1

~WEBGUI = 1

Does anyone have a suggestion to make WebGUI work with SAPLOGONTICKET?

Thanks,

Jos van Hinsberg