Click on any displayed user account to switch to it. Switch user: Click on this option to display a list with all the user accounts that exist on your Windows computer or device.Lock: You can press this option to lock your computer, which prevents you or anyone else from using it without entering the right password.When you press this three-key combination on Windows, the screen turns blue and four main options appear: But what can you do on a Mac? Is there something like Ctrl + Alt + Del for Mac users? Let’s find out!īefore we can recommend a suitable alternative to Ctrl + Alt + Del, we should first take a closer look at what the shortcut actually does. Who hasn’t encountered an unresponsive application before? If you’ve been using Windows, you probably know what to do when an application decides to stop responding: you press the Ctrl + Alt + Del keyboard shortcut, open Task Manager, select the troublemaker, and click End task.