QNTC, SBMNWSCMD, and File Level Backup can use Kerberos to authenticate to Windows Active Domain member servers. You may need to install an update Windows Server 2003 on your Microsoft® Active Directory controller servers in order to use Kerberos. This update is available in Service Pack 1 or Microsoft hot fix KB833708. Additional information, including information about installing the service pack or the hot fix, is available on the Microsoft Web site
After you install the hot fix or service pack 1, you must also update the Windows Server 2003 registry. Do the following steps: