Navision RTC in Win8 Tablet

Hi expert,

My tablet is Win8 version, after install Navision 2013, I tried to open RTC in this table. but program show me “A Server was not found at “net.tcp://localhost:7046/DynamicsNAV70/Service”. Either the URL is incorrect or the server is current not avaliable”

But I can use this table to login Navision by IE.

Do I need upgrade Win 8 to Win 8 pro or we can change some configure to let RTC connect Nav server ?

Thanks