Have a new Windows 7 Professional (32 bit) PC trying to connect to Windows 2008R2 Server (not AD). When I dbl click on server name, I get asked for user name & PW. Windows XP PC's don't ask for this. I've gone to sharing options on this PC and turned off password protected sharing for home and public profile. I've turned off firewall on the server just to check.
All PC's are on the "Workgroup" work group. I've disjoined the workgroup and rejoined it and still asks for user name and password.