I successfully allocated a libname to my SQL Server 2014 instance from SAS 9.4M3 on 64-bit Windows 10 using
libname sql odbc dsn='SQLServer' user=sas_readonly pw=MyPassword;
No joy however as there were no tables upon opening the library.
So...I added the SCHEMA='DBO' option.
Opening the library again the DataDirect warning displays continuously. Selecting 'OK' does not close it.