PDFs are not printing from Acrobat DC

The following is happening for many of my users running Windows 7.

The print both to printers on a Windows 2012r2 Print server and also to printers attached via IP address.

All of the users have Acrobat DC with the latest updates.

The problem:
When the user selects print the print dialog box comes up. When they then click print the box closes. It never spools or does anything else..

What I have done to trouble shoot:

1. Tried different files saved locally and also out of email--same result as above.

2. Uninstalled Acrobat DC and printed from the reader--same result.

3. Uninstalled Reader and reinstalled Acrobat--same result.

4. Ran the Clean Acrobat and Reader tool and then reinstalled--same result.

5. Removed printer off of server and reinstalled printer using latest installer--same result.

6. Tried printing to different printers--same result.

7. Turned off any security settings in Acrobat--same result

8. I ran through all the steps in adobe's printing troubleshooting steps, with the exception of Preflight as I didn't have that option.

Note that sometimes pdf's may print after any of the above steps, but eventually we have issues again.

Any ideas would be most appreciated.