Can't share printer on my 10 with a win7 computer on the same network.

Okay, I've installed the new driver(s). Something changed. Before it said Access Denied now it acts like it's printing and appears in the win7 print queue but never prints

I've changed so many things I can't remember what caused this but now it says enter network username and password. I've googled network password and don't find it mentioned. I don't believe networks have passwords and usernames.

The person who was trying to help apparently gave up.

Is it becoming clearer why I say modern networking has become a nightmare?