How to revoke a Windows user or group login access from SQL Server (Enterprise Manager)
To revoke a Windows NT 4.0 or Windows 2000 user or group login access from SQL Server
- Expand a server group, and then expand a server.
- Expand Security, and then click Logins.
- In the details pane, right-click the Microsoft® Windows NT® 4.0 or Windows® 2000 user or group to revoke, and then click Delete.
- Confirm the deletion.