When you install Google Chrome, it can sometimes become the default program for opening PDF files instead of Adobe Acrobat. Follow this guide to revert it back.
Step 1 – Find an example PDF on your computer (any PDF file is OK). Right click on the file and selec “Open with” then select “Choose another app”.
Step 2 – On the following window, select your Adobe Reader program, then tick the box “Always use this app to open.pdf files” then click OK.
From this point on, all PDF files will now be viewed in Acrobat Reader.