Microsoft Word is not an option in "Convert to PDF" category in Preferences

This is a problem I've been working on and everything I search online is either old, no one responded, or the solution doesn't work.  I created an Adobe profile for this Community hoping maybe someone here can help, I did search the community here but didn't find a fix.

Problem: I can't combine multiple Microsoft Word files into one PDF document.

Examples & Explanation: Someone I work with has several Word documents that they want to combine and convert into a single PDF.  I've done this for years and I was showing them how with Adobe Acrobat DC.  On their Surface PC I selected all the files right clicked and selected "Combine Files in Acrobat".  It opens Acrobat's window showing the files with the "Yellow !" on each file with a message at the bottom that says basically that there is a problem with the files or the file type is not supported not allowing the Combine option. 

I went into one of the Word Documents and I can use the Adobe Plugin to convert to PDF ... that works fine.  There are a lot of files so individually doing this is time consuming.  Thinking maybe it is because I'm doing the selection and conversion from File Explorer I opened Adobe Acrobat DC and tried to add the Word files in there and Combine Multiple Files to PDF.  When I get to the selection phase Adobe does not see the Word files in the folder to select meaning it doesn't see Word files as supported file types to convert.  I confirmed this by going into the "Preferences>Convert to PDF"  in Adobe, Microsoft Excel & PowerPoint are listed but not Word.  

I searched forums  but can't seem to get anything to work maybe someone here can answer.

Environment: Windows 10, Microsoft Surface, both Adobe Acrobat DC and Microsoft Office 365 are the newest and updated versions.

What I've tried:

1. Reinstall and update both Adobe Acrobat DC and Microsoft Office 365

2. Creating and using newly created Word files to rule that out and moved them from network to local disk

3. Tried a registry fix where it give the default value key the Microsoft Word version

4. Modified the Adobe Acrobat DC installation to include the full installation and options

5. Proved it worked fine on my PC with the same installations

6. Of course rebooted after every change

7. Reinstalled both software components listed above but this time used "Run as Administrator"

8. Re-associated and set the default PDF software to Adobe for PDFs (was already set but did this anyway)

9. Removed the Adobe Acrobat folder in profile App Data folder (then reinstalled the software again)

No matter what I did Adobe Acrobat DC still would not list Microsoft Word under the "Edit>Preferences>Convert to PDF" category which prevents me from selecting Word files, new or old, to convert to PDF from Adobe.

Now here's a twist to the scenario, I log out as the user having issues and log in under the Local Administrator account on the same machine.  I open Adobe Acrobat DC and Microsoft Word is listed under the Convert to PDF category. I try to complete the task with the Admin User and it works both from Adobe, Word, and File Explorer so I narrowed it down to the user profile I think.

Anyone run into this before and fix it?