Hello Steve,
We apologize for the inconvenience caused, as per the description above, the PDF printer is missing, Is that correct?
If the Acrobat Pro is installed, try resetting the preferences of Acrobat, to reset the preferences, refer to How to reset Acrobat Preference settings to default.
Reboot the machine and see if this brings any difference. Make sure the latest update of Acrobat is installed, check for any pending updates from Help>Check for updates.
You can also install the PDFPrinter manually, refer to Adobe PDF printer is missing | Manually install PDF printer Link: https://helpx.adobe.com/acrobat/kb/add-pdf-printer-manually.html
If the issue still persists, please use Acrobat cleaner tool to remove Acrobat Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs
Reboot the machine and install Acrobat from Download Pro or Standard versions of Acrobat DC, 2017, XI, or X
Let us know how it goes and share your findings.
Regards,
Anand Sri.