I have installed SQL Server 2012 on Windows Server 2008. This system is configured to be part of a Workgroup and all the users in our organisation are part of a domain. I am trying to use the reporting services that is part of SQL Server.
I was trying to give "System User" permission to a user who is part of the domain through the "New System Role Assignment" page of the "Report Manager". It keeps throwing the error "user name or group name is not recognized.(rsUnknownUserName)" Is it because the server is in a workgroup or is there any other reason?