disabling ctrl+alt+del i vista

[Subrat Patnaik]

my mfc application needs to disable ctrl+alt+del in vista. for this i tried using registry settings of HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System to set a new dword value of DisableTaskMgr and set it to 1. but the RegCreateKeyEx or RegOpenKeyEx apis are not able to create this key which when set to 1 disables task manager. if i create this subkey manually task manager is disabled. so can i get some help on how to create this sub key in vista.

[Perspx]

Is the process you're trying to create the key from running as Administrator? If not then you will need to elevate the process to access the registry and do so. Hope this helps, --Perspx

"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
BSoD during a Win98 presentation

[Khanh David To Tuan]

Disabling Task Manager won't disable CTRL ALT DEL under Vista. Even systemwide hooks dont work. And to change the regkeys, rightclick on regedit.exe and "Run as Administrator".