Hi, I followed the instructions at the following link http://msdn.microsoft.com/en-us/library/cc281383(v=SQL.100).aspx to config a custom authentication, but I get the following error when I try to access the Report Manager: StringStartsWith can't accept null parameters i need this configuration to use the anonymous account for access to the reportserver, then the login dialog will disapear for all clients, (I HOPE). so can any one help me to resolve this problem.Thanks Regrads Aya

See other thread. I believe they have this completely discussed already. http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/d4fc7be0-6bfb-4ccf-a302-62c6c0e259eb