In an Office program, click the File tab.
Click Options.
Click Trust Center, and then click Trust Center Settings.
Click Message Bar. The Message Bar Settings for all Office Applications dialog box appears.
Show the Message Bar in all applications when document content is blocked This is the default. The Message Bar appears when potentially unsafe content has been disabled.
Note: The option is not selected, and the Message Bar does not appear, if you select Disable all macros without notification in the Macro Settings area of the Trust Center.
Never show information about blocked content This option disables the Message Bar and no alerts appear about security issues, regardless of any security settings in the Trust Center.