By default, Microsoft Office PowerPoint sets the Macro Security level to High. This prevents macros from running unless they are signed. Additionally, Microsoft Office PowerPoint 2003 introduced a Very High level for Macro Security. This setting prevents even signed macros from running unless they are located in a location that has been setup as trusted. To run unsigned macros in a presentation, you need to set the Macro Security settings to atleast Medium. Here are the steps:
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