Thanks, yes having preferences inside a dialog box is confusing, as well as the wording. But this works when I start with MS Word.
But unfortunately this is not my workflow of creating PDFs. When I open Acrobat DC and go to File>Create>PDF From File and choose the Word document, it's uploaded to the cloud!
How do I prevent this? I.e.: how do I make Acrobat DC act like Acrobat DC standalone, where is this setting?
I can't think of how many Word files with sensitive data have been uploaded to the cloud accidentally with this in my company...
This can readily be accomplished. In Acrobat DC, use File=>Create=>PDF from File and you will get the following dialog to specify the file you want to create PDF from:

By selecting or deselecting the Use Adobe Create PDF cloud service, you directly specify whether the PDF is created on your host system or whether the cloud service is used.
I tried this both ways and this does indeed work.
- Dov