A family of Microsoft word processing software products for creating web, email, and print documents.
With files from an external source, check the file properties in Windows Explorer and make sure that the file is not blocked there. For instance, here are the properties shown on one of my Add-Ins after downloading it.
Since it come from another computer and has macros, the macros are blocked. Uncheck the box to unblock them.
This actually came from this computer, but was uploaded to my website and then downloaded; it is still blocked!
The above is the most likely source of the blocking and does give the message when you try to use it. See also: https://addbalance.com/word/download/SecurityRiskWarning.pdf
Generally, the best place for macro storage is in a template that is stored in a trusted location.
Trust Center Options are another location of macro blocking.
You should never set your Trust Center macro security settings to Enable All Macros.
The titles on these settings are misleading.
The appropriate setting for most users is "Disable all macros with notification."
That will give the user the option to allow the macros to run.
Disable all macros without notification does not give the user the option to allow them.
None of the options that say "Disable all macros..." actually disable all macros!
They will allow those in Trusted Locations to run; they will allow those from trusted publishers to run.