Why do you need to change security? 

In order for rTools to build reports for you, rTools must open additional excel spreadsheet templates. By default, Excel is set to not allow add-ins to perform this action.

Not using Excel 2003? see instructions for Excel 2007

Please follow the step below:

Step 1: Open Excel and select the Tools menu

Step 2: then select the Macro > Security...

Step 3: Select Trusted Publishers

Step 4: Check Trust access to Visual Basic Project

^ Top