I'm trying to connect a PC running Windows vista to a NAS hard drive. Another machine running XP connected to the NAS no problem. However, on the vista machine, I constantly get a dialog box that asks for a username and password. None of the logins and passwords will work. The software that came with the NAS (its a Maxtor Shared Storage External Hard Drive) also asks for a username and password when I attempt to setup the shared folders on the vista machine - the logins and passwords also don't work at that point either. I know others have dealt with this issue, and its fixable from what I understand, but can someone please (very plainly) explain what I must do to make this work. Much thanks.

I can't remember if you can get into the Secpol.msc in the business edition but you may need to set the LMCompatibility level in the registry to 2 or 3. This may be the issue as it tends to be the one that is causing the problems in a networked environment.Can you tell us if you are on a domain and if the NAS is on a workgroup? Does the NAS have it's own local user and password that's only for that system? If you are on a domain try making sure that if the NAS has it's own user and pass it's entered into the domain controllers user manager. That fixed my issue when I was attempting to map a shared folder on a FreeBSD based box that was on the workgroup and not the domain.If you can get into the Secpol.msc set the authentication level to NTLM only and try it out. If on an AD domain set the group policy level to Not Defined for it and let the Vista Machine set it's own level.