Crystal Report XI Release 2 - Error in Exporting Report

[hariomhari]

I am using version : Crystal Report XI Release 2.

Crystal Report XI allow me to create the report with integrated security.

I have created the report with integrated security option.
But I receive error when trying to export it to other format like pdf etc. The error is "Logon failed. Failed to export report". However, it works when I use DB user name and password.

I am using ASP.Net as front end.

Can anyone please tell me if it's possible to export the report using integrated security option (without specifing DB user name,password)

thanks