Save As PDF option not available in Office

If a user opens an Office product (Excel, Word, Outlook, Etc) they should be able to click File > Save As AdobePDF

If this option is missing the add-in may need to be enabled.

Check the active add-ins by going to File>Options>Add-Ins

If Acrobat PDFMaker Office COM Addin doesn't show under the Active Application Add-ins Under Manage: use the drop-down & select COM Add-ins & hit Go...

Check the box next to Acrobat PDFMaker Office COM Addin & hit OK

If the Acrobat PDFMaker Office COM Addin is not listed you will need to contact support to investigate the Adobe products installed. 

https://support.office.com/en-ie/article/missing-adobe-acrobat-tab-even-when-add-in-is-enabled-in-office-2016-apps-9a723b83-3ef5-4dd0-9701-269d888e7396