Have SSRS 2012 and SharePoint Point 2010 running on the same machine in Integration Mode. Reports that are published connect to Share Data Sources / Datasets without any issues. However, Report Builder 3.0 after launching will not connect to Shared Datasets or Data Sources or open up RDL's saved. It will through the following errror.
The permissions granted to user 'NT AUTHORITY\ANONYMOUS LOGON' are insufficient for performing this operation. --->
We are using NTLM not Kebros for authenication.