Excel has built security to protect you from unsafe workbooks. You see this in action when opening an Excel workbook that contains macros. If the workbook is opened from your email or downloads area then it is not trusted and the security kicks in to warn you of the potential risks.
For XLAutomation workbooks you can avoid this warning appearing each time you open the workbook by creating a "Trusted Location" . Refer to the relevant section below for your version of Excel to create a "Trusted Location"
Trusted Locations Excel 2013:
Trusted Locations Excel 2010:
Trusted Locations Excel 2007:
This solution is provided for XLAutomation customers and has been tested in our development and testing environments. Customers that follow the instructions in this solution do so at their own risk and XLAutomation is not responsible for any unintended impacts that might result.