This cannot be done with a setting in the
registry, however it is possible if you don't mind hacking one of
the system dll files. The file that the ctrl-alt-del dialog is
stored in is msgina.dll. Using any 32bit resource editor (such as
one with a Win32 C++ compiler, Visual C++, Borland C++) you can
edit this dll and remove the "Lock Workstation" button. Below are
instructions for performing this with Visual C++ however for
another resource editor find dialog #1650 and edit the attributes
of the "Lock Workstation" to "inactive" or "invisible".
- Rename %systemroot%\system32\msgina.dll to msgina_orig.dll
(this is so you have a backup)
- Copy the file back to be called msgina.dll
e.g. copy d:\winnt\system32\msgina_orig.dll
d:\winnt\system32\msgina.dll
- Start Visual C++, and select open
- Change the type to Executable Files (.dll, .exe, .ocx)
- Move to the %systemroot%\system32 directory and select
msgina.dll and click OK
- Once open, click on the dialog tree, and double click 1650
- Double click on the "Lock Workstation" button and deselect
"visible"
- Close the dialog box and the from the file menu select
Save
- Exit Visual C++ and reboot the machine
- Once the machine has booted up again the "Lock Workstation"
button will no longer be displayed
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