Hi,
This may have to do with Net Framework. If so, is best to find a workaround
in lieu of deleting the added user as you will need it before not. In the
meantime:
1. Go to Start/Run and type in: control userpasswords2 and press ok.
2. On the Users tab, clear the Users Must Enter A User Name And Password To
Use This Computer check box and then click OK.
3. In the Automatically Log On dialog box that appears, type the user name
and password for the account you want to be logged on each time you start
your computer.
Tip:
Add Control UserPasswords2 to the Control Panel (Line 1)
http://www.kellys-korner-xp.com/xp_tweaks.htm
If you prefer to hide the added user/s either go to: Start/Run/Regedit
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\SpecialAccounts\UserList
Add the username you wish to hide as a DWORD value. Set the value to 0
(zero). This will prevent the user from showing up on the welcome screen.
You will need to press CTRL-ALT-DEL twice at the logon screen to get the old
Win2K logon, to be able to logon to the account you've hidden.
Or use: TweakUI:
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp