Crystal Report not working in asp.net 2.0 after hosting in 2012 server

Dear All,

I had asp.net application (2.0) and it is working fine in windows 2003 server with IIS 6.0.

Now I need to move this application to windows 2012 server without changing anything on this.

I am facing problem in crystal report part.I am using inbuilt crystal report of asp.net 2.0.

Now I hosted the same application in windows 2012 server with IIS 8.0, all the pages are working fine.but when I am clicking the submit button in crystal report page it getting logout the application instead of showing report.

pls suggest what we need to change in configuration or IIS.

Regards

Bs Raja