Normally it is possible for users to lock their computer by pressing the Windows key and L key together. However, if you are a system administrator, you can easily stop users from locking their computer with the help of a Group Policy Editor or via a Windows Registry trick.

Using Windows Registry:
  • Open the Windows Registry. (Start -> Run -> type regedit)
  • Browser the Registry key below:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
  • Create a new DWORD entry named DisableLockWorkstation.

  • Set its value to 1 to disable the option and to 0 to enable the option.
Using Group Editor Policy:
  • Open Group Editor Police. (click on Start menu -> Run -> Type gpedit.msc
  • Under the Local Computer Policy, expand the tree to the following path:
User Configuration\Administrative Templates\System\Ctrl+Alt+Del Options


  • In the right-hand pane you should now see a variety of settings. Double-click on the Remove Lock Computer setting and its properties screen will open.
  • Select the Enabled radio button and then click on the Apply button. Finally click on the OK.