When you get a message that says Windows can't be activated, there are several possible reasons why. Select any of the following topics to see some typical reasons for activation difficulty, along with possible ways to get going again.

Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web). For more info, see Shop and earn Microsoft Rewards points. Explore the earn page and the points breakdown page.

Blue Screen errors (also sometimes called black screen errors or STOP code errors) can occur if a serious problem causes Windows to shut down or restart unexpectedly. You might see a message that says, "Windows has been shut down to prevent damage to your computer" or a similar message.

Check here for the known game issues that we're currently tracking and find out what you can do about them. You see the following error code and message when you try to install a game or an app on a Windows 10 device: 0x803F81F5. To install your app or game, remove a device from your account.

详细了解 Xbox 数字代码和礼品卡，以及如何解决兑换内容的问题。.

How does OneDrive work in Windows? How can I see hidden files and folders? Learn how to open and navigate File Explorer in Windows. Get answers to common questions about File Explorer.

To use the Performance widget over your game, press Windows logo key + G to open Game Bar, then select Widget menu > Performance. CPU – Central Processing Unit. This indicates whether your system is keeping up with the needs of the game. GPU – Graphics Processing Unit.

Connect your Surface on Windows 10 to a TV, external display, or projector by using the Surface HD Digital AV Adapter or the Surface VGA Adapter.

Solution 2: For games previously played through Game Pass or another subscription. Periodically we adjust the titles available through subscription services, and a specific title might be removed from the game catalogue. If a game has been dropped, it can no longer be played with your subscription.

If you see a list of Android devices, choose the one you wish to pair with Phone Link to access your favorite apps, respond to texts, make calls, view photos, and more from your PC. Grant permissions on the Link to Windows app on your Android device. You are all set to use Phone Link.