Changing CTRL + ALT + DEL to logon

[Vitalix]

Hey guys and gals,

I am trying to lockdown an XP system and would like for a standard user to logon automatically when the machine boots into Windows. I would like to start an application, and disable the CTRL+ALT+DEL key so that users cannot interrupt the application.

Is there a way that I can do this via Windows registry or various MMC snaps?

Can I change CTRL+ALT+DEL to ALT+F5+BACKSPACE, for example?

Thanks in advance as usual!

[prathapml]

Ctrl+Alt+Del is so deeply embedded into the psyche of windows, that it is not possible to disable it, or change its functionality.

WAIT !!!!! (forget my comment above)

try running "gpedit.msc" from <Start >> Run>, and see if there is any function to disable the (above) magic key-combination. Then, you could create a hidden shortcut to TaskManager in the QuickLaunch, and give it a shortcut key of <Ctrl+Alt+any_alpha_numeric_key>.

[MCT]

just wanna add to what prathapml said ... in gpedit.msc

User Config. > Admin Templates > Windows Components > System > CTRL + ALT + DEL Options

are the only thing that resembles what u said .. & that only lets u specify what buttons 2 remove from the screen

try http://winguides.com they may have something for setting the key different

also.. u may wanna take a more therough look in gpedit, i didnt see anything tho

regards

[Vitalix]

Ctrl+Alt+Del is so deeply embedded into the psyche of windows, that it is not possible to disable it, or change its functionality.

WAIT !!!!!  (forget my comment above)

try running "gpedit.msc" from <Start >> Run>, and see if there is any function to disable the (above) magic key-combination. Then, you could create a hidden shortcut to TaskManager in the QuickLaunch, and give it a shortcut key of <Ctrl+Alt+any_alpha_numeric_key>.

No luck. Just the basic local security stuff.

It's possible to disable the task manager portion of the ctrl/alt/del combo, but then I would not be able to administer the machine in case I needed to stop or start and app.

Is the only way to disable to change it through 3rd party software?

[MadGutts]

The only way i can see to do this, is to hijack the keypress and stop windows recieving it... The same way windows stops the motherboard recieving it unless its pressed 3 times...

I'm affraid my assembly is too rusty to help with this one, but i'm sure someone could help you.

[scankurban]

run this cmdline

control userpasswords2

change your login properties

[jaclaz]

This is one way:

Windows NT and Windows 2000  

You can disable Ctrl-Alt-Del on NT and 2K but this is very risky. It can prevent you from ever being able to log on again!

Be sure to enable Automatic Logon by specifying DefaultDomainName, DefaultUserName, DefaultPassword and AutoAdminLogin in the registry under Windows Login. Otherwise you will not be able to logon again. See Knowledge Base article Q114615 for details - there is a link on my links page. You may also want to read my disclaimer page.

After you set up automatic logon the logon dialog no longer appears at startup. You are then unable to logon as a different user until the automatic logon and below code is disabled in the registry. You may be able to temporarily bypass the automatic logon by holding down the Shift key as windows is starting 

This code was donated by Paul Johnston. 

Public Sub SetupScancodeMap()
Dim bArray(1 To 48) As Byte

On Error Resume Next
If g_bDebugMode = True Then Exit Sub
'
' Setup the keyboard scancode mapping to disable the Windows keys
' and Context menu keys
'
bArray(1) = &H0
bArray(2) = &H0
bArray(3) = &H0
bArray(4) = &H0

bArray(5) = &H0
bArray(6) = &H0
bArray(7) = &H0
bArray(8) = &H0
'
' Number of keys
'
bArray(9) = &H6
bArray(10) = &H0
bArray(11) = &H0
bArray(12) = &H0
'
' Windows key
'
bArray(13) = &H0
bArray(14) = &H0
bArray(15) = &H5B
bArray(16) = &HE0
'
' Windows key
'
bArray(17) = &H0
bArray(18) = &H0
bArray(19) = &H5C
bArray(20) = &HE0
'
' Windows menu key
'
bArray(21) = &H0
bArray(22) = &H0
bArray(23) = &H5D
bArray(24) = &HE0
'
' F10 key
'
bArray(25) = &H0
bArray(26) = &H0
bArray(27) = &H44
bArray(28) = &H0
'
' Left Ctrl-key
'
bArray(29) = &H0
bArray(30) = &H0
bArray(31) = &H1D
bArray(32) = &H0
'
' Left Alt-key
'
bArray(33) = &H0
bArray(34) = &H0
bArray(35) = &H38
bArray(36) = &H0
'
' Right Ctrl-key
'
bArray(37) = &H0
bArray(38) = &H0
bArray(39) = &H1D
bArray(40) = &HE0
'
' Right Alt-key
'
bArray(41) = &H0
bArray(42) = &H0
bArray(43) = &H38
bArray(44) = &HE0
'
' Null terminator
'
bArray(45) = &H0
bArray(46) = &H0
bArray(47) = &H0
bArray(48) = &H0
'
' Set the new registry value, does not take effect until the next reboot.
' You can use my registry module or your own routine to write the value to the registry.
'
Reg_SetKeyValue HKEY_LOCAL_MACHINE, "SYSTEM\CurrentControlSet\Control\Keyboard
Layout", "Scancode Map", bArray, REG_BINARY
End Sub 

If you use this code, please mention "www.TheScarms.com"

Found here:

http://www.thescarms.com/vbasic/StopReBoot.asp

And here is another method, involving a new GINA STUB:

http://www.dotnet247.com/247reference/msgs/36/181489.aspx

Hello,

Thanks for your post. As I understand, you want to trap and disable
Ctrl-Alt-Delete programmatically in Win2K. Please correct me if there is
any misunderstanding. I reviewed your description carefully, and now I'd
like to share the following information with you:

1. As documented in the article to which you pointed, you can use
DisableTaskMgr to disable Ctrl+Alt+Del. To trap Ctrl+Alt+Del, you have
three options: write a GINA stub, write a keyboard driver, or replace
TaskMgr.exe with your own program. I recommend you create a GINA stub which
is comparatively easy to implement among these three options.

2. However, we have to use VC instead of VB to implement a GINA Stub. As
you know, a GINA Stub is a native dynamic-link library (DLL) exported to
Winlogon that requires a valid, consistent function to call into. This
requires a DLL export, which .NET Framework does not support. Managed code
(VB .NET, C#) has no concept of a consistent value for a function pointer
because these function pointers are proxies that are built dynamically.

3. There is an existing GINA Stub sample in MSDN. To trap/disable
Ctrl-Alt-Delete, you just need to replace its WlxLoggedOnSAS with the one
in my code snippet below.

GinaStub Sample: Pass-through "Stub" Gina
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcsample98/
html/vcsmpginastubsample.asp?frame=true

/*----------------------------code snippet----------------------*/
int
WINAPI
WlxLoggedOnSAS(
PVOID pWlxContext,
DWORD dwSasType,
PVOID pReserved)
{
if (dwSasType == WLX_SAS_TYPE_CTRL_ALT_DEL)
{
/* Add additional code of you own */
return WLX_SAS_ACTION_NONE;
}
else
return GWlxLoggedOnSAS( pWlxContext, dwSasType, pReserved );
}
/*-----------------------------end of--------------------------------*/

In addition, I believe the following MSDN aritcles are helpful:

WlxLoggedOnSAS
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/se
curity/wlxloggedonsas.asp

Loading and Running a GINA DLL
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/se
curity/loading_and_running_a_gina_dll.asp

Please feel free to let me know if you have any problems or concerns.

Have a nice day!

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

jaclaz

[Cool Surfer]

Installing powertoys for windows helps in this, there is an auto logon option

also. Download tweak UI and right click on the inf file and install it.

http://www.microsoft.com/windows95/downloa...Set/Default.asp

Dont install powertoys for xp, it des not work.