asp.net web application

Question

I have a web application in which i have crystal reports on the pages , i am not using any logic into the crystal report simply using design i gave the data source table and its columns all things works fine locally , when i host the application when i click the report page my application logout and the url becomes like that 

http://planrbme.com.pk/login.aspx?ReturnUrl=%2fBasicReportForPartner.aspx

 

what is the reason , i am not using any session in crystal report ...