There are a few software conflicts that can exist with PDF software. The PDF documents are not populated by default because Adobe implemented a new security feature to prevent certain PDF properties from displaying, as they could contain malicious content.
This article will show you how to stop the Google Chrome web browser from automatically opening PDF documents.
Instructions
Open the Google Chrome browser:

Click the Customize and Control Google Chrome menu (three vertical dots) icon next to the user icon:

Select the Settings option:

Select the Privacy and Security option in the left-hand navigation menu:

Click the Site Settings option:

Scroll down to the Content section and click the Additional content settings drop-down menu:

Click the PDF documents drop-down menu:

Click the Download PDFs radio button:

PDFs will now be downloaded instead of automatically opening in the Google Chrome browser