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。

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Learn how to use Wi-Fi 7 and Wi-Fi 6 and WPA3 in Windows for better wireless coverage and network security.

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

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

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

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Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

Learn what to do when you see a warning message that your device does not meet Windows 11 minimum system requirements to upgrade.

Learn how to view, manage, and delete cookies in Microsoft Edge.