WEBGUI opens not at PI 7.11

Hi there,

i have a fresh installed PI 7.11

I customized it and all works fine... but the WebGui do not opens...?!

When i go ti SICF - sap - bc - gui- sap - it - Webgui

and TEST the Service the IE opens with the URL in the Adressline

http://server1:50000/sap/bc/gui/sap/its/webgui?sap-system-login-basic_auth=X&sap-client=001&sap-language=EN

A logon Windows appears.. i put in my logon data... and then a white blank IE Page appears.. no webgui is loading...

do someone has an idea?

Regards