When a program on a Windows computer stops responding, users have several ways to close it. Unlike Macs, which use the term "force quit," Windows refers to this action as "forcefully ending a process." The simplest way to close most applications is by clicking the X button in the top-right corner of the window or pressing the keyboard shortcut Alt + F4. This sends a standard closing signal, allowing the program to finish any tasks before shutting down. However, some apps—like Discord, Spotify, Slack, and Telegram—usually minimize to the system tray (a small area near the clock) instead of fully closing. If an application doesn’t respond to the standard close command, the Task Manager can be used to forcibly end the process. To open the Task Manager, users can press Ctrl + Shift + Esc or right-click an empty area on the taskbar and select Task Manager. Once open, the Processes tab shows all running applications and background tasks. Selecting a process and clicking "End Task" or right-clicking and choosing "End Task" will stop the program immediately, which may result in the loss of any unsaved work. In situations where the Task Manager is inaccessible, users can create a desktop shortcut that runs the command "taskkill /f /fi "status eq not responding"" to close all unresponsive programs. Additionally, third-party tools like SuperF4 offer keyboard shortcuts for forcefully closing applications. If these methods don’t work, restarting the computer can resolve issues with frozen apps. Regularly rebooting the PC and keeping software up to date can also help prevent freezing problems.