CAN'T DOWNLOAD PDF ON MACBOOK PRO

Try setting up another admin user account to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.

Isolating an issue by using another user account 

Safe Mode - About

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown. If the log won’t post, try posting it in Pastebin and provide a link in a reply        Pastebin

Etrecheck – System Information

In Safari View menu, select Show Status Bar.

When you roll over the link containing the PDF, do you see a URL ending with .pdf in the Status bar at the bottom of the browser? If you do — then either clicking on that link, or right-clicking and choosing one of the download choices should get it downloaded.

If you don't see a .pdf extension, then the content is being served from a content management system (CMS) that may be hiding the PDF behind an internal location, and you will have to click on that URL to either bring up another access page, or it may download depending on how that site is configured.

What happens when you try?

If you right click on it do you get a choice to Save As?