This is the reason why, if you open an Excel workbook that contains macros, you may see a message warning you that “macros have been disabled”. Therefore, let's start by understanding… Excel's Default Macro Security Setting: Disable Macros With NotificationĮxcel's default setting is to disable all macros with a notification. I assume that, if you're reading this Excel tutorial, the version of Excel you're working on still has its default settings.