CAUSE
By default, security settings on domain controllers running Windows Server 2003 are configured to help prevent domain controller communications from being intercepted or tampered with by malicious users. For users to successfully negotiate communications with a domain controller that runs Windows Server 2003, these default security settings require that client computers use both server message block (SMB) signing and encryption or signing of secure channel traffic. Clients that run Windows NT 4.0 with SP2 or earlier installed and clients that run Windows 95 do not have SMB packet signing enabled and cannot authenticate to a Windows Server 2003 domain controller.
Windows 98/ME
1. Install Internet Explorer 6 with Service Pack 1 or higher.
2. Install DSCLIENT utility from Windows 2000 Server installation disk or from