The instructions apply to Windows 11, 10, 8.1, and 7.
SelectSnap Windowsto see additional options.
Place your mouse on an empty area at the top of one of the windows.

Lifewire / Colleen Tighe
Long-press the left mouse button, and drag the window to the right side of the screen.
Release the mouse to snap that window to the right side of the screen.
It should now fill half the screen, or the corner if you dragged it there.

If there are several windows open, they’ll all resize appropriately to fit on the screen.
you’ve got the option to also use theWindows key+left arrowandWindows key+right arrowto snap windows.
Otherwise, use a mouse.

To use split screen with Windows 8.1:
Open two or more windows and/or applications.
Place your mouse in an empty area at the top of one of the windows.
Long-press the left mouse button, and drag the window to the left side of the screen.

Move it all the way over, as far as possible.
Release the mouse to snap that window to the left side of the screen.
Select any of the other windows to snap to the right side of the screen.

Drag the dividing line to resize the windows.
To position two windows side-by-side in Windows 7:
Open two windows.
Place your mouse in an empty area at the top of any open window.

Long-press the left mouse button, and drag the window to the left half of the screen.
The window will take up half the screen.
The window will take up the right half of the screen.
If there are several windows open, they’ll all resize to fit on the screen.
it’s possible for you to also long-press theWindowskey and theleftorright arrowkey to move windows around.