How do I disable the automatic assignment of Allow Logon to Terminal Server?

A. To modify the default state, perform the following steps:

1. Start regedit.exe.
2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
   Terminal Server\DefaultUserConfiguration.
3. Double-click fLogonDisabled and set it to 1.
4. Click OK.
5. Close regedit.