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disblable ctrl + alt + del

In app -> properties-> access I have selected to disable crt alt del, but it does not work, is there any other method that you have tried that works? I have tried some modifying the registry but they have not worked for me. Anyone who knows what really works?

 

thank's

Hello,

After a look at the source this seems to be a MS mess with registry entrys and their suppoort by MS.

In this articel it is described how it should work:

But that seems to be not always to work. (Mostly on newer OS)

In the source I can find this commanet:

{ Allows Win NT, 2000 and XP to disable Ctrl+Alt+Del keys.
1 = disable, 0 = enable. Returns previous setting. }

This was introduced for Neobook 4.1.1

When I try to do it by hand on my Win7 tablet regedit does not allow me to create the  key.

Started with admin rights I can create the key, bit it did still not work.

This was offered in the past to build a kind of kisok mode for windows.

When you google "Windows kiosk mode" you get info about the real offer from MS for this.

Running a special user account let you run only one specific app.

So is it worth to further invest time to get this running? Is it possible?

Regards

Hans-Peter

 

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emo

Hello,

I tracked it further down by building a VN debug version with some debug messageboxes.

The VN code contain a regkey check:

IF Reg.OpenKey( 'Software\Microsoft\Windows\CurrentVersion\Policies\System', TRUE ) THEN

..

And this fails on WIN 7 and WIN10.

On my XP system it does the regedit and the Taskmanager is locked abd a message like this appear: "Taskmanage is locked by the administrator"

So the question is: Are there other registry hacks which does the same for WIN7 + WIN10?

If possible a fix for VN could be made.

Regards

Hans-Peter

 

 

Hello,

I also tried a reg-file:

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000001

But this fails on WIN 7 because you need admin rights.

So nothing what a normal app cound do from a user account.

Regards

Hans-Peter

 

 

Hi Hans,

After trying various things in the registry, I have chosen to disable the CTRL keys, thus there is no possibility to access the task manager. It is not the best solution, but in my case, which is a custom shell for a museum, it works for me. Indeed there is the possibility of putting windows in kiosk mode, but you depend on specific versions of windows and that is why I do not use that option.
The registry version of DisableTaskMgr works, it doesn't show the task manager, but it does show the other options.

Greetings and thank you!

@emmanuel-fernandez please share the registry changes you have done to block the CTRL keys.
Thank you!

Hi @luishp ,

I've actually disabled them by remapping the keys.
This is possible by adding in the registry:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Controls \ Keyboard Layout, adding a new key in binary format named "Scancode Map"
The information to understand how it works is quite complete in:
https://learnitstepbystep.blogspot.com/2019/11/windows-registry-keyboard-scancode-map.html
It can easily be done with programs like sharpKeys,
https://www.randyrants.com/2019/01/sharpkeys-3-9/
Where it even generates it in the registry.
I hope this information is useful to you ;-)
All the best!

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luishp