To Turn On or Off the Display of the Grid in the Open Views

Do one of the following:

Select Drawing > View > Presentation > View Attributes .

or
Press <Ctrl+B>.

or
From any view window's control menu, select View Attributes.

or
In the view control bar, select the View Attributes icon or the adjacent downward-pointing triangle.

The View Attributes dialog opens.
Click the Apply to Open Views icon.
Turn on or off Grid.