Issue when maintain master data in BW 740

Hi guy ,

When I want to maintain master data by right clicking info object , It pop an IE application ,

http://sapbwdemo.sap.corp.com:8000/sap/public/myssocntl?sap-client=001    Internet Explorer cannot display the webpage . I have check the /sap/public/myssocntl service was activated in SICF . here I have two question :

1. Does the BW master data maintain function moved from SAP GUI into web dynpro screen ? we can't use it in SAP GUI directly already ?

2. how to solved the above question ?

thanks in advance .

Jialiang Qiu