Can't Open some .pdf files within Courses?
If you're using Chrome and having trouble opening some .pdf files within your courses, try this:
Step 1: When in Chrome, click menu (3 dots in top right), then click on Settings.
Step 2: From within "You and Google" click on "Sync and Google services."
Step 3: Scroll down to "Other Google services" and turn OFF "Make searches and browsing better"