Please explain the workflow.
What OS do you work on?
Where are you exporting from?
What happens when you click on the PDF?
I am working in OS X 10.9.5. I am exporting my PDFs out of Acrobat Pro DC. When I double click on the PDF, it won't open.
I began an online chat with someone at Adobe who was not able to help and is passing me on to someone else who might be able to.
Thanks for your response.