I cannot find the Exit Sketch icon in the the Sketch tollbar or anywhere else. I have gone into Tools>Options, System Option Tab, General Category and checked the Enable Confirmation Corner box. Apparently because I am unable to exit sketch, when I go into the Features toolbar several icons such as Revolved Boss/Base, Swept Boss/Base, Extruded Cut, Hole Wizard, Revolved Cut and others are grayed out.
SolidworksSketching