This Command Ctrl+Alt+Delete on Mac command turns the screen blue on pressing, and there appear four options which are: It’s very simple to work with it on windows, but what when you’ve got Mac? It is important to understand the command before we start suggesting the alternative ones to Ctrl+Alt+Del on Mac. On pressing the command, the Task manager pops open where you select the option of Troublemaker and then click on End task. The shortcut Ctrl+Alt+Del is used to shut down an unresponsive application. How to get back the files that got deleted accidentally? What is the Ctrl+Alt+Delete command on Mac?