To extend your display on Windows 11, connect the second monitor, press Windows + P, and select Extend. Your desktop spreads across both screens, and you can drag windows from one to the other. Then open Settings > System > Display to arrange the screens so your mouse moves between them the way you expect.
These steps apply to all current Windows 11 releases on desktops and laptops, and the same shortcut and Settings page work in Windows 10. They follow Microsoft’s guide to using multiple monitors in Windows, which covers display modes, identifying and arranging screens, and the multiple-display options in Settings. If the second screen doesn’t show up, Microsoft’s external monitor troubleshooting guide has the fixes summarized further down.
What you need
- A free video port for each extra screen. HDMI, DisplayPort, or a USB-C port that supports video. Microsoft notes that a PC with only one video output port supports a single external monitor by default.
- The right cable or adapter. A USB-C to HDMI or DisplayPort adapter, or a dock, can add an output if your USB-C port carries video. Check your PC maker’s specs for that port.
- Not a splitter. A display splitter sends the same signal to every screen, so it can only duplicate, never extend.
A laptop’s built-in screen counts as one display, so a laptop plus one monitor is already a two-screen setup.
How to extend your display on Windows 11
- Connect the second monitor to your PC with an HDMI, DisplayPort or USB-C cable, and turn the monitor on. Make sure the monitor’s input (often a Source or Input button) matches the port you used. Hooking a laptop up to a TV instead? The same idea applies when you use HDMI on a Windows 11 laptop.
- Press Windows + P. A panel of display modes opens.
- Select Extend. With only a keyboard, use the arrow keys to reach it and press Enter. The screens may go black for a second while Windows switches.
- Drag a window to the edge of your main screen and keep going to move it onto the second monitor.
Each screen now shows a different part of the desktop, so you can keep, for example, a browser on one and a document on the other.
If you’re choosing a monitor to sit next to a laptop, it helps to check your laptop screen size in Windows 11 first.
Each screen can show its own wallpaper too; here’s how to set a different background for each monitor.
Extend from Settings instead
If Windows + P doesn’t respond, or you prefer menus, use Settings:
- Right-click an empty part of the desktop and select Display settings, or go to Start > Settings > System > Display.
- Check that both displays appear as numbered boxes at the top of the page.
- Open the drop-down menu next to the boxes and select Extend these displays.
- Select Keep changes if Windows asks whether to keep the new setting.
If you don’t confirm within a few seconds, Windows switches back on its own, which protects you if a screen goes blank.
What the Windows + P options mean
| Option | What you see | Good for |
|---|---|---|
| PC screen only | Everything on the main display; others go dark | Turning the extra screen off without unplugging it |
| Duplicate | The same picture on every display | Showing a projector exactly what you see |
| Extend | One desktop spread across the screens | Multitasking and presenter notes |
| Second screen only | Everything on the second display | A closed, docked laptop |
Duplicate has one catch: Windows has to pick a resolution both screens can show, so the picture may look a little soft on the sharper screen. Extend lets each screen run at its own resolution.
How to arrange extended displays
- Select Start > Settings > System > Display.
- Select Identify. A number appears on each screen so you know which box is which. Windows picks these numbers; read about whether monitor identity numbers can be changed.
- Drag the numbered boxes to match where the monitors sit on your desk, side by side or one above the other.
- Select Apply, then move your mouse pointer across the screens to test the layout.
The pointer and windows cross between screens at the edge where the boxes touch. If the pointer gets stuck or comes out on the wrong side, the boxes don’t match your desk; drag them again. Lining up the top edges of two boxes also helps when monitors are different sizes. Choosing which screen acts as the main display in Windows 11 is a separate setting.
Useful settings for extended displays
- Taskbar on every screen: right-click the taskbar, select Taskbar settings, expand Taskbar behaviors, and check Show my taskbar on all displays, per Microsoft’s taskbar guide.
- Window positions when you undock: in Settings > System > Display > Multiple displays, use Remember window locations based on monitor connection and Minimize windows when a monitor is disconnected. Windows then puts windows back where they were when you re-dock.
- Resolution, scale and refresh rate: select a display’s box on the Display page, then change its settings below. Each screen keeps its own values.
Still no taskbar on one screen? Try the fixes for getting the taskbar back in Windows 11. A window left stranded on a screen you’ve unplugged can still be brought back from off-screen.
If the second monitor isn’t detected
Work through these in order and test after each one:
- Press Windows + P and make sure Extend is selected.
- Go to Settings > System > Display > Multiple displays and select Detect.
- Check that the cable is firmly connected at both ends and that the monitor is set to the right input.
- Disconnect docks, dongles and adapters, then try a different cable or a different video port (HDMI, DisplayPort, DVI or VGA).
- Try the monitor with another computer. If it fails there too, the monitor or cable is the problem.
- Press Windows + Ctrl + Shift + B to reset the graphics driver; the screen may flash briefly.
- Restart the PC and install updates from Settings > Windows Update.
- If problems started after a driver update, open Device Manager > Display adapters, open your adapter’s properties, and use Roll Back Driver on the Driver tab. If that option isn’t there, uninstall the device, restart, and let Windows reinstall the driver.
Once Windows detects the screen, it appears as a numbered box on the Display page and you can choose Extend.
If one extra monitor works but a second extra one doesn’t, your graphics hardware may not support that many screens, so check with the graphics card maker. On a work or school PC, an administrator may also restrict display or projection settings.
If a new screen appears sideways or upside down, you can turn it the right way up.
Extend to a wireless display
Your TV, monitor, or adapter must support Miracast, a wireless display standard built into many smart TVs and adapters.
- Turn on the TV or wireless display and open its screen mirroring input if it has one.
- Press Windows + K to open Cast and select the display. Accept the connection on the TV if it asks.
- Press Windows + P and choose Extend.
If it doesn’t appear, search for Cast and select Connect to a wireless display, or use Settings > System > Display > Multiple displays > Connect. To stop, press Windows + K and select Disconnect. For TV-specific fixes, read about casting a Windows 11 laptop to a TV; for more wireless options, read about screen sharing on Windows 11. A cable gives a steadier picture than Wi-Fi, which matters for video and games.
Use another Windows PC as the second screen
A spare Windows laptop can act as the extra display. On the receiving PC, go to Settings > System > Projecting to this PC, add the Wireless Display optional feature, and open the Wireless Display app. The app needs Windows 11, version 22H2 or later. Then, on your main PC, press Windows + K, pick that PC, and choose Extend with Windows + P. For the full steps, read about wireless connections to another display.
How to undo extended display
Press Windows + P and choose PC screen only to go back to one screen, or Duplicate to mirror it. Unplugging the monitor also returns you to one screen, and Windows usually returns to Extend the next time you connect the same monitor.
Frequently asked questions
How do I choose which screen is my main display?
In Settings > System > Display, select the screen, then check Make this my main display. New windows and desktop icons open there by default. There’s more detail in the article on changing your main display.
Can I extend my display to three monitors?
Yes, if your PC or dock has enough video outputs and your graphics adapter supports it. Get one external monitor working first, then ask the adapter maker whether it supports more. The full setup is in setting up multiple monitors on Windows 11.
What’s the difference between Extend and Duplicate?
Extend gives you more desktop space, with different content on each screen. Duplicate shows the same picture on both, which suits a projector when you want the audience to see exactly what you see.
Why do my windows move when I unplug the monitor?
That’s the Multiple displays behavior described above. Change the two checkboxes in Display settings if you’d rather windows stay put.
Should I use Extend for a PowerPoint presentation?
Yes, if you want to see your notes. PowerPoint’s Presenter View needs Extend: the audience sees the slides on the second screen while your notes stay on yours. Presenting on the extended screen? It also helps to hide the toolbar in a PowerPoint full-screen slideshow.
Matthew Burleigh is the founder, head writer, and editor of Solve Your Tech, which he launched in 2012. He has written technology tutorials since 2008 and worked in IT since 2003, including small-business support, IT management, and consulting. He holds Bachelor’s and Master’s degrees in Computer Science from Arizona State University.
Matthew writes practical guides for Windows, iPhone and iPad, Microsoft Office, Outlook, Google apps, and Android. Solve Your Tech’s guides are checked step by step against the device or app maker’s own documentation and tested on his own devices whenever he has the hardware or software, with clear steps, sources, and update dates.
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