[Samba] Classic PDC appears to revert to guest login on Samba 4

[soonerdave]

Considering that you are using W2K3 and XP clients, have you considered the
possibility that the two are not negotiating a proper SMB protocol? I think,
by default, the minimum protocol level Samba4 will negotiate is SMB2, and I
believe you might need what would be considered NT1 for those clients. I
don't think SMB2 came out until Vista, so it could be that Samba4 won't
negotiate down to a level XP can support. That might preclude the
communication of the username from the client back to the server...

As a test, in your smb.conf, you could consider trying 

max protocol = NT1

Restart Samba, and then try logging in from your XP or W2k3 client and see
if you have any success. 

Just a thought. 





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