Windows 7 sharing took a fuck-turn for the worse.You have to be in the same homegroup (work, public or home).It's a hell of a stupid process.
I think MS has lost the plot tbh..Make a user account on the windows computer, and when you share the folder, under the permissions, add that user with read/write permissionsFrom the other computer, connect to the drive, and authenticate with \ in the username, and the password you made .. should work(e.g. if your windows PC was called swindle-PC and the user you created was called Frank, you would authenticate with "Swindle-PC\Frank" as the username)And seriously, the metro touchscreen interface on Server2012.. who's moronic idea was that.
Shares are easy in Windows - you just have to know how to do it....
Share the folder.Make sure you have File and Print sharing allowed in the firewall (an option to allow this is given when you connect to a network, you probably clicked no)Network center -> advanced sharing -> all networks -> turn off password.