Disable the Auto Logon Shift Override Feature

When the auto logon feature is enabled, it is possible for a user to press and hold the Shift key to bypass the auto logon sequence and enter a user name and password.

To disable this ability, follow these steps:

1. Open Registry Editor.
2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
3. Create or modify the string value named IgnoreShiftOverride and enter a value of 1.
4. Close Registry Editor
5. Reboot the computer.