I'm not able to reproduce a problem with using the Symbol Browser to browse Template or Drawing symbols in either a new or existing drawing. Are you running 23.00.01.02? Can you elaborate on what's not working?
If you go to Tools, Info and check Program Paths, do the Current DataCAD Path Settings look OK?
Mark, I think it was just caught in some loop of not knowing where to look. I had paths set correctly BUT until I went to my usual folder location and then changed back to "drawing", it the began to work.