If your Office 2016 for Mac is upgraded to the 64-bit version from the 32-bit version, the PDFMaker add-in for Word and PowerPoint appears disabled – the add-in button in the ribbon is grayed out. It happens because the add-in is compatible only with the 32-bit version of Office 2016.
Adobe is aware of this problem, and working to make the add-in compatible with the 64-bit version of Office 2016 in a future release of Acrobat.
If you upgraded your Office 2016 to 64-bit and you have Acrobat DC installed, you see the following error message when you open a Word file:
The problem is fixed in the latest patch of Acrobat. Download and apply the patch to resolve the problem. Download the patch from here - https://helpx.adobe.com/acrobat/release-note/acrobat-dc-august-02-2016.html.
While converting a Word document to PDF using the Acrobat ribbon (Acrobat > Create PDF), using Mac Word 2016 (Word 32-bit, version 15.23.2 or later), the following problems may occur:
To resolve the problem, try one of the following steps:
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