As per the below post I have done all the settings But getting below error. http://social.technet.microsoft.com/Forums/en-US/sqlreportingservices/thread/d9299ae1-32ce-4b0f-ac01-81c44b43fd78 We have SSRS running as domain account "mydomain\ssrs_svc" and SQL2008 R2 running as domain account "mydomain\sql_svc". SQL2008 R@ is running AppName Instance name. SQL server name - > Host name - SqlServerBox - > Fully Qualified Name - SqlServerbox.win.org SSRS is intalled - Native mode On AD side for both the accounts Delegation tab -> Trust this user for delegation to any service is checked. SPN are set like below. setspn -a HTTP/ SqlServerBox:443 mydomain\ssrs_svc setspn -a MSSQLSvc/SqlServerBox:1433 RB\B1S01QE02 setspn -a HTTP/SqlServerbox.win.org :443 "mydomain\ssrs_svc setspn -a MSSQLSvc/SqlServerbox.win.org :1433 RB\B1S01QE02 On SSRS config file we have set the Reporting Services\ReportServer\rsreportserver.config file we have set the authentication <AuthenticationTypes> <RSWindowsNegotiate/> </AuthenticationTypes> It is kept on asking to type user name and password. After three times it just taking me to blank screen. On SSRS server event log I see below error. A Kerberos Error Message was received: on logon session Client Time: Server Time: 13:27:1.0000 5/16/2011 Z Error Code: 0xd KDC_ERR_BADOPTION Extended Error: 0xc00000bb KLIN(0) Client Realm: Client Name: Server Realm: Server Name: SqlServerbox.win.org Target Name: Error Text: File: 9 Line: d86 Error Data is in record data. Please let me know if you have any suggestions.Anekm

Hi Anekm, The same thread http://social.technet.microsoft.com/Forums/en-US/sqlreportingservices/thread/fe5f376d-fbf5-495e-9390-4cc5803ef141 Besides, you could click this link to get some reference about this same issue, http://blogs.msdn.com/b/lukaszp/archive/2008/03/26/solving-the-reporting-services-login-issue-in-the-february-ctp-of-sql-server-2008.aspx Thanks, Challen FuPlease remember to mark the replies as answers if they help and unmark them if they provide no help.