If part of the screen on your device doesn’t appear on your second display, your settings might not be to scale. Try these solutions.

Adjust the resolution on your device

If you’ve set the resolution on your device to a lower resolution than its default setting, you can increase it so it will fit correctly on your second screen. Here’s how:

  1. In the search box on the taskbar, enter screen resolution, then select Change the screen resolution from the list of results.

  2. Under Resolution, select the arrow, then select the resolution that says Recommended. (The highest resolution is often the recommended resolution on the device.)

  3. Select Apply.

Use the Microsoft Wireless Display Adapter app to adjust display settings

You can use the adapter app to change how the screen on your device scales to the screen on your second display. Here's how:

  1. Connect your device to your adapter.

  2. Open the Microsoft Wireless Display Adapter app.

  3. Select Personalization. In Fit to Display, drag the slider to the right until you can see everything that’s on your device on the HDTV, monitor, or projector.

Resolution can't be set to 4K

Only the Microsoft 4K Wireless Display Adapter can display in 4K. If you have this adapter and it isn't displaying in 4K, try the following:

  • Connect your Windows 10 device to Wi-Fi, then connect your adapter to Wi-Fi with the Microsoft Wireless Display Adapter app. For info on getting the app, go to Use the Microsoft Wireless Display Adapter.

  • Check if your second display can support 3840x2160 resolution or higher.

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