Alternatively referred to as Control+F4 and C-f4, Ctrl+F4 is a keyboard shortcut most often used to close a tab or window within a program.
If you want to close a program and all of its tabs and windows, use the Alt+F4 keyboard shortcut.
How to use the Ctrl+F4 keyboard shortcut
Ctrl+F4 in an Internet browser
Ctrl+F4 in Excel and other spreadsheet programs
Ctrl+F4 in Microsoft Windows
In Microsoft Windows, pressing Ctrl+F4 will close the active tab or window in a program that supports multiple tabs or windows.
Related keyboard shortcuts and keys
Below are links to related keyboard shortcuts and individual key pages.