If Automatically open data when added to the project is not selected under Tools ► Options ► Data General in SAS Enterprise Guide, then you will not be able to explore SAS data sets.
Specifically, the data set does not open when you attempt to explore data using either of the following two methods. There is no error.
In order to explore data, you must select the Automatically open data when added to the project option.
NOTE: The Automatically open data when added to the project option does not exist in EG 8.1 or later.