Needing to move a DNN install to a different location on the server, without moving the DB location, a copy of the DNN was placed in the new location.  Then, the file-system path was changed in IIS, but IIS returns an error when the path is tested.

The IIS error is Authentication, stating, "Path might not exist and could not be verified."

File-system permissions for the old location, and new location, are identical.  What am I missing?