Integreted Windows authentication - Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

Hi Everyone,

I have SSRS installed on server A and connecting to SQL Server installed on server B (both A & B are running on different nodes of a SQL Cluster).

When I try to create a DataSource and use Integreted Windows authentication I get the usual 'NT AUTHORITY\ANONYMOUS LOGON' error.

I created SPN for for the SSRS url.

http/VSXXX.skandia.co.uk:80
http/VSXXX

and also enabled delegation in AD for the domain account under which SSRS is configured. Still I get the anonymous auth error.

Then I changed the rsreportserver.config to <RSWindowsNegotiate/>.Now when I try to access SSRS URL I get a blank screen. Once I change it back to NTLM the link works but still the anonymous error persist.

Please can someone advise what else needs to be done to resolve the error.

Paul - SQL DBA