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EmilyDullum-3927 avatar image
2 Votes"
EmilyDullum-3927 asked Sean-Liming commented

Disable or Change Ctrl + Alt + Del for Kiosk Mode

I've successfully set up Kiosk mode on a Windows 10 Enterprise PC. I have it so that it auto logs in with the local user name and it launches the app. I've disabled Ctrl + Esc via Keyboard filters and also Ctrl + Alt + Del. My main goals is to restrict users from entering those key combinations. If they do, it ends Kiosk mode and they are sent to the login screen showing the user name and a blank password field. They do not know the password and they don't have the power button available to them to restart to trigger the autologin.

I just need Ctrl + Alt + Del to go away and this setup will work. I've even tried using SharpKeys with no luck. I'm starting to think this is a limitation of the Kiosk mode in Windows 10.

I was able to create a scheduled task to restart the computer each time the local user is disconnected (when someone presses Ctrl + Alt + Del), however it restarts when I remote into it with my admin account! DOH!

Any suggestions would be helpful at this point. I work for the government, so funds are tight and this is what I have to work with.

windows-10-generalwindows-iot-10core
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Hi,
@EmilyDullum-3927
Just checking in to see if the information provided was helpful.
If the reply helped you, please remember to accept as answer.
If no, please reply and tell us the current situation in order to provide further help.

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yagmoth555 avatar image
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yagmoth555 answered yagmoth555 edited

Hi

To think differently, did you tried to change the CTRL-ALT-DELETE menu to remove option you don't want the user to see ?

109941-qa1.jpg

That way even if the user hit the CTLR-ALT-DELETE, having no menu will just allow the user to hit ESC to return to your application. That way it's a lot easier than removing the keys set.

Thanks

Philippe


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EmilyDullum-3927 avatar image
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EmilyDullum-3927 answered yagmoth555 commented

I have both of those policies enabled and the user is still able to use Ctrl Alt Del.
109915-image.png



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Hi, my answer was more a workaround to have ctrl-alt-del display nothing that can break your kiosk's mode, so you remove the option you dont want the user to use, as disabling ctrl-alt-del often bring other problem, but you have some solution listed there; https://superuser.com/questions/142176/how-can-i-disable-the-ctrl-alt-del-key-combination-completely-on-xp-vista-7 for example to remove ctrl-alt-del altogether. I never tested them.

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PercivalYang-MSFT avatar image
0 Votes"
PercivalYang-MSFT answered

Hi,
@EmilyDullum-3927
I suggest you try this gpo setting first rather than other complicated operations.
gpedit.msc-administrative template-system-logon-Hide Entry Points for Fast User Switching
110131-1.png
After enable Hide Entry Points for Fast User Switching, the outcome will be
110054-2.png
It also works when hit crtl+alt+del, turns out that only shows LOCK, Sign out, Change a password, Task Manager.
I hope this will meet your demand that doesn’t end Kiosk Mode.
If your need further help, there have complex methods using Windbg to edit all hotkeys, otherwise here is another link for your reference

https://blog.kiosksimple.com/2014/08/18/blocking-ctrl-alt-del-and-other-windows-shortcuts-on-your-kiosk/
lease Note: Since the websites are not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information.


Hope this can help you
If your need further help, be free reply to me at your convenience.

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EmilyDullum-3927 avatar image
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EmilyDullum-3927 answered

After enabling that policy, Ctrl + Alt + Del still ends the Kiosk session.

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PercivalYang-MSFT avatar image
1 Vote"
PercivalYang-MSFT answered RodrigoTeles-5202 published

Hi
@EmilyDullum-3927
I found a method might work, before do that please backup your registry as follows
https://support.microsoft.com/en-us/topic/how-to-back-up-and-restore-the-registry-in-windows-855140ad-e318-2a13-2829-d428a2ab0692

Disable Ctrl-Alt-Del:

1 Save the following text into a text file named disable_Ctrl_Alt_Del.reg:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,4d,e0,1d,e0,4b,e0,1d,00,\
00,00,00,00

2 Double click either of them to disable

3 Shutdown and restart

Acutally it blocks all hotkeys using ctrl/alt/del. like ctrl+c/ ctrl+v , currently my pc is unable to execute these collocations. let alone ctrl+alt+del

Hope this can help you
If your need further help, be free reply to me at your convenience.

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This solution worked for me. Thanks!

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EmilyDullum-3927 avatar image
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EmilyDullum-3927 answered PercivalYang-MSFT commented

I applied the registry change, but I'm still able to use Ctrl + Alt + Del and end Kiosk mode. The user is taken back to the log in screen and they see the user name with the password field.

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Hi
@EmilyDullum-3927
Have you restarted the PC to apply the changed registry. The fact that I applied this registry change on my other 2 computers and restarted, then it works well due to changed keyboard layout by registry

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EmilyDullum-3927 avatar image
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EmilyDullum-3927 answered

Yes, I've restarted.

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PercivalYang-MSFT avatar image
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PercivalYang-MSFT answered

Hi,
@EmilyDullum-3927
Thanks you waiting for reply, I do appreciate your time and effort! I hope we can find a solution! above all, did you find any changes after applying the registry change? if so and failed, what's worse you don’t like the change, you can just delete the Scancode map in the following link to restore
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout

If there aren’t any changes, that’s unusual, I suggest you have another try that create the Scancode map manually.
As MSFT, we don’t suggest using third party tools as you had used, maybe it’s due to incompatibility even the Sharpkeys doesn’t work in kiosk mode.

Here is the detailed usage of editing Scancode Map
https://itectec.com/superuser/remap-keyboard-with-scancode-map-for-disable-altctrdel/
Note: Since the websites are not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information.



Hope this can help you
If your need further help, be free reply to me at your convenience.

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If the Answer is helpful, please click "Accept Answer" and upvote it

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Pat-3795 avatar image
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Pat-3795 answered Pat-3795 edited

Hi @EmilyDullum-3927
Could you solve the Problem in the meantime? I ask because I have exactly the same problem.
Thank you!

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EmilyDullum-3927 avatar image
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EmilyDullum-3927 answered

The solution or workaround if you will is creating a scheduled task to restart the computer each time the local user is disconnected (when someone presses Ctrl + Alt + Del) :(

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