Error Message When You Try to Add Windows 2000-Based Workstation to Windows NT 4.0-Based Domain

When you attempt to add a Microsoft Windows 2000 Professional-based workstation to a Microsoft Windows NT 4.0-based domain, you may receive the following error message:

This issue can occur when the name of your user account contains a space, or when you do not have full Administrator permissions in the Windows NT 4.0-based domain.

To resolve this issue, log on through an account that has full Administrator permissions before you try to add a workstation to the domain. If you already have Administrator permissions but your user name contains a space, create a copy of your user account and select a user name that does not contain a space.