Unable to create a datasource. Datasource fails to 'test successfully' for SSRS I imported an SSRS 2008 Datasource to SSRS 2012 using RS Scripter tool. 

The DB connection is the same for the SSRS 2008 and SSRS 2012 data source created.

I can 'test successfully' the login/pw for SSRS 2008 datasource, but  'fail' with SSRS 2012.

The login has permissions and exists (They are the same for both SSRS datasources)

Any suggestions on how to trouble shoot this? 
I asked Server Admins if there are firewall issues, they stated there shouldn't be any.
I was able to ping both hosts (though maybe that doesn't mean much sometimes)
The issue had to due with Windows GPO it was unknown to me at the time
http://technet.microsoft.com/en-us/library/bb326317%28v=sql.90%29.aspx