Short answer:
Appuyez sur Win + T, ensuite Alt + F4, ensuite Ctrl + Shift + Alt + Esc.
Long answer:
The functionality was moved into Shut Down Windows dialog. Applying step #3 there does the job.
Appuyez sur Win + T to activate Windows taskbar.
Appuyez sur Alt + F4 to display Windows shutdown dialog.
Appuyez sur Ctrl + Shift + Alt + Esc to cancel the dialog.
(The Esc clé activates the Cancel bouton and the modifiers are taken into compte. When Explorer sees them, it will exit. Vous pouvez equally use them while souris-clicking the Cancel bouton.)
Source: A comment in Q/A "How do you add a Windows environment variable without rebooting?"