Learn how to protect your PC, identity, and data from tech support scams.

提示: 為了節省能源並減少顯示器的磨損，建議您在計算機閑置時將計算機進入睡眠模式。 睡眠模式耗用的電力遠低於執行螢幕保護功能，並讓您的計算機在上次中斷的地方快速繼續。 若要深入瞭解，請參閱 如何在 Windows 中調整電源和睡眠設定。

Here are the most likely causes for an unrecognized charge: A Microsoft subscription has recurring billing enabled. Someone you know, such as a family member, bought something with your card. You can now investigate this on the Manage your payments page. A previously declined charge was charged again. A pre-order or split order was shipped. Someone made an in-app purchase from an app, game, or ...

Learn how to turn on Control flow guard so you can install and run Windows Subsystem for Android.

Skype help & learning Important: Update December 20th 2025: We are extending the timeframe you have to export your Skype data until June 2026. Submit your requests to download your data through the Skype Export Portal here.

Use the Information Protection viewer to view protected files in Windows, Android, iOS, or Edge.

提示 可以使用任何电话号码来请求安全代码。 电话号码不需要与你的帐户关联。 手机不需要是智能手机，也不需要连接互联网，只需要能够接收短信。 你可能需要创建新密码。 阅读有关 如何创建强密码的提示。 如果看到“该Microsoft帐户不存在”错误消息，请使用 Microsoft 帐户登录帮助程序 ...

Learn how to use Manage and Optimize Drives to keep your disk and data drives defragmented and at top performance in Windows.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

Find out the steps you can take if you receive a message telling you a driver can't load on your device.