This is a Microsoft error that may be resolved by completing the following steps:

https://social.msdn.microsoft.com/Forums/office/en-US/6500b26f-6cb1-4e3d-9d61-15850cfdcbdb/the-macros-in-this-project-are-disabled?forum=outlookdev 

https://support.office.com/en-us/article/Enable-or-disable-macros-in-Office-files-12b036fd-d140-4e74-b45e-16fed1a7e5c6

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