Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Learn how to reinstall Windows on your PC and how activation works after it's installed.

Learn about what effect closing a Microsoft account might have on your other apps and services.

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

Learn how to add an app to run automatically at startup. Select the Start button and scroll to find the app you want to run at startup.

Here's how to change the size of text, images, and apps in Windows. To change your display in Windows, select Start > Settings > Ease of Access > Display.To make only the text on your screen larger, adjust the slider under Make text bigger.To make everything larger, including images and apps, choose an option from the drop-down menu under Make everything bigger.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.