Enabling a machine for automatic logons may seem to contradict basic security rules. However, in some situations, you might need to set up an NT machine to log on automatically, completely bypassing the standard logon sequence.
For example, this might be necessary for a remote print server or another specialized application server. You can make this change with a registry edit.
Follow these steps:
When you log off, NT automatically logs on the user that you specified in Step 3.
Whenever anyone logs off this computer, NT logs on the default user again. To revert to requiring a normal logon, change the value of AutoAdminLogon to 0.
Note: Editing the registry is risky, so be sure you have a verified backup before making any changes.