https://forums.autodesk.com/t5/autocad-forum/need-to-double-click-now-to-select-objects-since-upgrading-to/m-p/5754005#M318668 <P>You replaced wih another mouse but how about going to the mouse's manufacturer and get the driver for it to work wih 8.1</P> Mon, 03 Aug 2015 13:16:25 GMT Patchy 2015-08-03T13:16:25Z