I love how every answer in this thread is NOT to use Adobe's bloatware.
One note about basically all of these, including Adobe and their cursed McAfee parasite-ware :
ALWAYS select custom install if possible, and uncheck all the optional stuff except :
☑️ View PDF in browser
☑️ Associate PDF with application
For example Foxit has bloatware for their cloud thing I believe called ConnectedPDF or something similar. Needless junk.
And even if you have one that didn't have a parasite-ware tagalong the last time you installed it, it's no guarantee the latest download hasn't given in to that type of thing.
Common ones are McAfee Livescan, various browser adware, extra features and such, or naggy trial premium versions when you specifically downloaded the free basic reader. Accepting the trial will just add popups, and disabled functionality when the trial period ends.