

Open the address bar in Windows Explorer and Internet Explorer. If you highlight other text and press F4, the last changes you performed are repeated. For example, if you highlighted text and changed its font and color. In Microsoft Word 2000 and above, the F4 key repeats the last action performed.

With earlier versions of Windows (e.g., Windows 95 to XP), the F4 key was used to open the find window. Ctrl+ F4 closes the open window or tab in the active window in Microsoft Windows. Alt+ F4 closes the program window currently active in Microsoft Windows. When used with the Alt and Ctrl key, the F4 is often used to close a program or window in a program. Repeat the last action performed in Microsoft PowerPoint.

While in the Excel formula box, pressing F4 switches between an absolute and relative cell reference. The following list is all the locations where the F4 key can be used with information about its use. If the F4 key is not working on the keyboard, see: Some keys on my computer keyboard aren't working.
