How to Make a Window Bigger or Smaller on Windows 11

What you need: A Windows 11 computer. These steps use File Explorer as the example window.

1. Click Start (the Windows logo) on the taskbar at the bottom of the screen.
2. Type File Explorer, then click File Explorer in the search results to open it.
3. Look at the upper-right corner of the File Explorer window. Three buttons sit side by side: a short line (Minimize), a square or two overlapping squares in the middle, and an X (Close). Do not click the X, because it closes the window.
4. If the middle button shows two overlapping squares (Restore Down), the window already fills the screen. Click it once, and the window becomes smaller. The middle button now shows a single square.
5. Click the middle button with the single square (Maximize). A box of small layout pictures may appear when the pointer rests on the button; click the button itself, not the pictures. The window now fills the whole screen except the taskbar, and the middle button shows two overlapping squares.
6. Click the middle button with the two overlapping squares (Restore Down).

Expected result: The window returned to its smaller size, and the middle button shows a single square again.