Tim Fisher has more than 30 years' of professional giải pháp công nghệ experience. He's been writing about tech for more than two decades & serves as the VP và General Manager of luanbui.com.

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Ctrl+Alt+Del, sometimes seen spelled out as Control+Alt+Delete, is a keyboard command that"s usually used to interrupt a function. However, what it accomplishes is quality based on the context in which it"s used.

The Ctrl+Alt+Del keyboard combination is usually talked about within the context of the Windows operating system even though others bởi vì use the shortcut for different things.

This keyboard command is also sometimes written with minuses instead of pluses, as in Ctrl-Alt-Del or Control-Alt-Delete. It's also referred lớn as the "three-finger salute."

How Ctrl+Alt+Del Can Be Used

If Ctrl+Alt+Del is executed before Windows is to lớn a point where it can intercept the command, BIOS will simply restart the computer. Doing so might also restart the computer while in Windows if Windows is locked up in a certain way. For example, using Ctrl+Alt+Del during the power On Self chạy thử reboots the computer.

In Windows 3.x & 9x, if Ctrl+Alt+Del is quickly pressed twice in a row, the system will immediately start a reboot without safely shutting down any mở cửa programs or processes. The page cache is flushed and any volumes are safely unmounted, but there isn"t an opportunity to cleanly shut down running programs or save any work.

Avoid using Ctrl+Alt+Del as a way to lớn restart your computer so that you don"t risk corrupting your open personal files or other important files in Windows. See How bởi I Restart My Computer? if you"re not sure how to vì it the right way.

In some versions of Windows (XP, Vista, và 7), Ctrl+Alt+Del can be used to log in khổng lồ a user account; it"s called secure attention protection/sequence. My Digital Life has instructions for enabling that feature since it"s disabled by mặc định (unless the computer is part of a domain).


More Information on Ctrl+Alt+Del

Some Linux-based operating systems let you use the Ctrl+Alt+Del shortcut for logging out. Ubuntu và Debian are two examples. You can also use it to reboot an Ubuntu server without having khổng lồ log in first.

Some remote desktop applications let you send the Ctrl+Alt+Del shortcut khổng lồ the other computer through an option in the thực đơn or via an alternative shortcut (like Ctrl+Alt+Insert) because you can"t usually enter the keyboard combination and expect it lớn pass through to lớn the application. Windows will assume you want to use it on your computer instead. The same is true for other applications lượt thích that, lượt thích VMware Workstation và other virtual desktop software.

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The options seen in Windows Security when the Ctrl+Alt+Del combination is pressedcan be modified. For example, you can hide the Task Manager or lock option if for some reason you don"t want that khổng lồ be shown. Making these changes is done through the Registry Editor; see how at theWindows Club. It can also be done through Group Policy Editor as seen at Bleeping Computer.

In most scenarios, you can get away with pressing the Alt key first, as in Alt+Ctrl+Del, & it will have the same effect. However, in some situations, there might be software that uses this other shortcut, in which case something else might happen instead of the traditional Ctrl+Alt+Del response.

David Bradley designed this keyboard shortcut. Seethis Mental Floss piecefor details on why it was programmed in the first place.

macOS doesn"t use the Ctrl+Alt+Del keyboard shortcut but instead utilizes Command+Option+Esc khổng lồ invoke the Force Quit Menu. In fact, when Control+Option+Delete is used on a Mac (the Option key is lượt thích the alternative text key on Windows), the message "This is not DOS." will appear as a sort of Easter egg, or hidden joke embedded in the software. Here"s more info about Ctrl+Alt+Del on Macs.

When Control+Alt+Delete is used in Xfce, it immediately locks the screen and starts the screensaver.

Control+Alt+Delete is also used lớn mean "to end" or "do away with." It"s sometimes used khổng lồ explain escaping an issue, removing someone from the equation, or forgetting about them. "Ctrl+Alt+Del" ("CAD") is also a webcomic by Tim Buckley.

Use the Ctrl+Shift+Esc keyboard shortcut instead of Ctrl+Alt+Del when using Windows remotely. The remote computer will need khổng lồ have its Task Manager enabled to vì this, though.

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