While preview the report in the reporting server it will show me the password expired?

HI i am working on BIDS 2008R2,

I have deployed my Report soluction in the reporting server,but while i preview the report in my reportig server ,

it will show me the below error ,pls find the scrrenshoot it show the below error

Tell me one thing here i dnt have permisions to view the reports or what,

but while am using windows credntials alos not able to see the reports,

so can you pls help me out for this problem.its urgent basis