Visual Basic for Applications (VBA) is not installed on your computer. In this case, no VBA macro can be run, regardless ...

Visual Basic for Applications (VBA) is not installed on your computer.  In this case, no VBA macro can be run, regardless of whether the macro has a valid certificate of trust.  You or your administrator may have chosen not to install VBA, or the version of Microsoft Office that you are using may not install VBA by default.  If your version of Microsoft Office does not provide VBA as an installable feature, you can upgrade to a version that provides VBA support.