By Justin Doughty
With the introduction of the new Lasso selection in AutoCAD 2015, some users are clicking and holding the mouse button by mistake, and in turn using lasso selection.
To get windows selection, the mouse button should be released before dragging the window.
However AutoCAD 2015 gives you the option to turn the Lasso selection off. This can be done by going to the OPTIONS menu in AutoCAD, Selection Tab, and untick “Allow press and drag for Lasso”:
You can also turn this off in the command line, setting the PICKAUTO system variable to 3.