Whenver I open a pdf file in Acrobat Reader (Mac) I have to enter my Adobe account password. Acrobat Reader is a free app, so why do I need to enter the password. This is a pain and will drive me to setting Preview as my default app for viewing pdf documents.
I’d rather have a bottle in front of me than a frontal lobotomy. …Tom Waits
It's designed to ask, so they can sell you things - that's the reason it's free. However, you don't need to enter it every time - just once, and don't sign out. If this isn't happening, that might be a fixable problem - in fact, that's what the link was about, not the fact that it asks (because it's designed to).