Learn what you can do if you're not receiving account aign-in verification codes.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

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。

When you use InPrivate tabs or windows, your browsing data isn't saved on your PC once you're done.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

获取有关如何在 Xbox 主机上注册、延长或查看订阅的最新计划的信息。

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

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