On our LAN we have a Buffalo TerraStation Terra server. This has been in and running happily for a year. The current workstations are XP and all can access the appropriate shared folders as required. I have been experimenting with a trial copy of Vista Business and when I try to access the terra server from within Windows Explorer I can see the terra server in 'Network' but as soon as I try to expand either of the two shares I get a Windows prompt for username & password. The thing is there is NO username/password required to access the shares from XP or Server 2003 so why should Vista insist that a username/password is needed? The terraserver is set up so that 'DomainUsers' have read access & Administrators have Read/write. Anyone had any experience of this situation at all?

bump any clues anyone? ------------- I just found this thread from some time back which is in a similar vein. It was never answered properly. http://forums.microsoft.com/technet/showpost.aspx?postid=1240338&siteid=17&sb=0&d=1&at=7&ft=11&tf=0&pageid=0 ---------------- I have now downloaded and installed the registry fix from Buffalo to be found at:- http://www.buffalotech.com/support/getfile/?Buffalo_NAS_Vista_Support.zip No difference made by that. ----------------------------- next step I opened up a command prompt (run as Administrator) and tried mapping a drive the traditional way i.e. Net use z: \\TS-HTGL607\media it then promps for a username and password. Now someone in Microsoft must know why this is happening? If W2K3 and XP Pro can access this terrastation why can't Vista? It must be some underlying security feature that needs to be turned off. I am rapidly coming to the conclusion that Vista is ok for home use but has serious issues in a business LAN.

Well after more investigating I have come up with a partial answer that I can live with. There are options to flash the Firmware on the NAS and install Samba3 which is a bit extreme and risky. What i did find however is that if you alter the registry key: HKLM\System\CurrentControlSet\Control\Lsa\LmCompatabilityLevel and set it =1 and reboot then you can map a network drive to a share on the NAS by using - Net Use Z: \\ipadress\share where ipaddress = the device IP address and then it maps happlily. Try mapping to it by name e.g. Net use Z: \\TS-HTGL607\share and you get prompted for a username/password. I have checked DNS & Wins and relevant entries exist. So hey MS, what's that all about then eh? Would any MS person care to comment on this as I can't see me being the only person going to have this problem.