Cannot Configure Domain User as a System Account User

Problem: On a Domain Controller Machine, you are unable to configure Domain user as a System account user.

Cause: The Domain User has no User Principle Name (UPN) logon settings.

Solution: Check if Domain user on the domain controller machine has a UPN; otherwise perform the following steps to add UPN settings:

  1. On your Domain Controller, open Active Directory Users and Computers from
    ControlPanel > All Control Panel Items > Administrative Tools > Active Directory Users and Computers or
    Go to Start > Run, and type dsa.msc and press Return.
  1. In the Active Directory Users and Computers window that displays, locate the domain user account, right-click and choose Properties.
  1. In the [domain user] Properties window that displays, select the Account tab.
  1. In the Accounts tab, under User logon name, ensure that both fields that make up the UPN are populated.
    For example, where the pre-Windows 2000 account format is:
    domain1\svcDatabase, the UPN format would be: svcDatabase@domain1.local, where domain1.local is the fully qualified domain name.