When I double click on Rhino or any 3dm files, nothing happens. Program does not start, there are no tasks related to rhino in the task manager. Tried reinstalling v6.22, updating windows, installed an older version 6.16, none of it works. Even running as administrator does start anything…
Does Rhino start when you start it in its safemode? There should be a start menu entry that says safemode after the Rhino name