@Patrick wrote: .... Btw: In Viya 4 you get already as part of startup a cas session CASAUTO and a caslib and cas libname CASUSER. Please note that above statement is not correct and you can't rely on CASAUTO and CASUSER to always exist after startup.  Having said that: If you can see cas engine libraries in the Studio library pane right from beginning then there must have been a CAS session created as part of site specific config for SAS startup. ... View more