If you are encountering difficulty opening PDFs from Drive in Chrome like the below...


...you may need to download the Adobe Acrobat extension from the Chrome store

Click on Connect more apps

Then click on Adobe Acrobat

Select Install

Confirm the subsequent prompt

Then select the Gmail account you are downloading the app for

Confirm the subsequent prompts

Ensure you are happy with the access you are giving then click Allow

Next time you click Open with, Adobe Acrobat for Google Drive should be available

Note: you will be prompted to confirm your account the first time you use it