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Possible causes. Make sure your PC, the external display, and the cable all support DisplayPort or MHL alternate modes. Make sure the device or dongle is connected directly to your PC. Make sure the device or dongle is connected to the USB-C port on your PC that supports the correct Alternate Mode.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Check the Xbox services, games, and apps for any service outages.

Manage background activity for apps in Windows. Some apps let you manage background activity, which determines what they can do when they’re in the background and not actively in use. Apps that can run in the background can send and receive notifications, sync information, and stay up to date.

On the VPN settings page, the VPN connection name will display Connected underneath it. On the taskbar, a blue shield will display when you're connected to a recognized VPN. Learn how to create a VPN connection profile in Windows, and then use it to connect to a VPN.

Install and use a scanner in Windows 10. When you connect a scanner to your device or add a new scanner to your home network, you can usually start scanning pictures and documents right away. If your scanner doesn't automatically install, here's some help to get things working.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.

Customize Magnifier zoom level. buttons to select how much Magnifier enlarges the screen when you turn it on. until you hear “Zoom out, button” or “Zoom in, button,” and press to adjust the zoom level accordingly. Narrator announces the new value.