CAUSE
The Internet Server Web Application Manager (IWAM) account is created on the primary domain controller (PDC), but does not have time to synchronize with the backup domain controller (BDC).
WORKAROUND
To work around this problem, perform the following steps:
Remove the Windows NT 4.0 Option Pack.
Reinstall the Windows NT 4.0 Option Pack. During Setup, choose a Custom installation and clear the Microsoft Index Server and World Wide Web Sample Site.
Synchronize the computer with the domain.
Start the Windows NT 4.0 Option Pack Setup program again and add Microsoft Index Server and World Wide Web Sample Site.