Hi since I updated to DC I can't open PDF files anymore. I'm on macOS Sierra. When double clicking PDFs, using the File menu or even opening recent files, nothing happens, not even an error message. I restarted system, no change. Double check the window is not minimized (which is what it felt like) but it's not.
As per the description above, you are not able to open any PDF files, Is that correct?
Please refer and try the steps from the following KB docs See how to troubleshoot problems opening PDF files and other PDF related issues Link: https://helpx.adobe.com/acrobat/kb/troubleshoot-problems-opening-pdfs.html
You may also check for any pending updates from Help Menu>Check for updates.
Try to repair the installation files as well (Windows only) from Help Menu>Repair installation.
If the issue persists, please share the following details:
Hope this helps, and let us know how it goes.