Two machines, 'A' and 'B', both running W7 sp1 x64, Both have the same username & password, Both are setup to share all drives, Both are using the hidden (or super) Admin account renamed (by design), Both can see one another, all drives, all folders, No firewalls. Initially 'B' could logon to 'A', but not the other way around. A search found the problem under Advanced Sharing. The 1st two entries were turned off. Now, 'A' can logon to 'B', but not the reverse which is opposite of what it was before. As soon as I try to connect, before I even type anything in, the message in the logon box is the above "Login failure". Nothing was done to 'B' where it initially worked before. Is this some one way deal, logon one way or the other, but not both?