Drag the application to the right or left edge of the screen, depending on your monitor configuration. You should start to see the edge of the application appear in your second monitor.

When launching a game or full-screen app, if another app is moving to a different location, this post will help you resolve it. Most games launch in full screen for the experience.

You can move the taskbar on Windows 10 to four different positions: the default bottom of the screen, the top, the left, and the right.

If you see the same thing on both displays, you should start by making sure the displays are Extended instead of Mirroring ...

When you change to an external monitor, Desktop icons may move. Here's what you can lock desktop icons in a Multiple Monitor setup on Windows 11/10.