Hello,
The information from my earlier posts was a little out of date - LabVIEW DSC 8.0 uses the Domain Account Manager, rather than the older User Manager. Using the User Manager can cause a generic security error, especially if the domain on which you are trying to log onto was created on a different machine and the domain server is not currently active. We've seen cases where the domain manager needs to be restarted if communication was lost with the domain server, and our R & D department is aware of and working on that issue (# 3V79Q29Z).
With regards to the Domain Manager not present on your Windows 2000 Server installation, what version of LabVIEW DSC are you using? I'm not aware of a reason why an install on that OS would prevent us from having the Domain Manager present if the version of LabVIEW that you install has it on another OS. I will check on this for you, however, since the security structure in Windows 2000 is a little different from that found in XP.
Cheers,
Matt Pollock
National Instruments