Microsoft Office

Introducing Visual Basic for Applications 39
FIGURE 39.2
The Macro Settings section of the Trust Center dialog box.
By default, Excel uses the Disable All Macros With Notification option. With this setting in effect, if you
open a workbook that contains macros (and the file is not digitally “signed”), the macros will be disabled,
and Excel displays a Security Warning above the Formula bar (see Figure 39.3). If you’re certain that the
workbook comes from a trusted source, click Enable Content (and verify your decision in the subsequent
dialog box), and the macros will be enabled.
If the Visual Basic Editor window is open when you open a workbook that contains macros,
Excel does not display the Security Warning above the Formula bar. Rather, it displays a dialog
box with two buttons: Enable Macros and Disable Macros.
NOTE
FIGURE 39.3
Excel displays a Security Warning if a workbook contains macros.
Perhaps the best way to handle macro security is to designate one or more folders as “trusted locations.” All
the workbooks in a trusted location are opened without a macro warning. You designate trusted folders in
the Trusted Locations section of the Trust Center dialog box.
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