Original problem: An NT workstation had Service Pack 3 install, and started getting denied when they tried to access a SAMBA share that was set for share level security. The error message basicly stated that the user was not allow to access this share from this workstation. As I stated in the original message, nothing had changed on the server, and this NT machine had all proper access before the addition of SVP3. So there was no reason to look at the SAMBA server to make changes. Solution: I guess the SVP3 enables encryped passwords by default. The trick is to go back to using plain text passwords. The DWORD that controls this is missing from the registry, you have to add it. When you add this value, it works the way it used to. [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Rdr\Parameters] "EnablePlainTextPassword"=dword:00000001 So...Using the regedit program: On my system, this value was not present, and an <Edit> <find...> produced nothing. So, I went to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Rdr\Parameters in the registry, and did an <Edit>, <New --> >, <DWORD Value> "EnablePlainTextPassword" with a value of 1. Exit regedit and reboot the machine. The next time I tried to access the SAMBA share, it asked for my username and password, and let me in without problems. Just like it used to. To those that replied, thanks. Thanks to Dieter R. who had the correct answer. Dave