当在新设备中首次启动 Windows 10 时，设备上已安装的防病毒保护程序即是你的默认安全应用。但是，Windows 安全中心已预安装并可随时使用。

Find out how to submit a case review and learn more about your Xbox enforcements.

There are several different ways for family members and organizers to leave or be removed from a Microsoft family group depending on their role. Before leaving, family members and organizers should remove saved places and location alerts they would not like to remain in the group. Location alerts must be removed by the individual who set them for saved places to be deleted.

Windows Hello 是登录到 Windows 设备的一种更个性化、更安全的方式。 在 Windows Hello 中，你可以使用面部识别、指纹或 PIN 登录，而不是使用密码。

Learn how to enable live captions in Teams meetings and see real-time subtitles for what's said. Improve your accessibility and comprehension.

Learn how to check your Xbox purchase history. If you compared your bank statement to your purchase history and others’ purchase histories and still can’t reconcile the charge, note that you can investigate a charge from Microsoft on any card you own.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

When you send this meeting request with Free/Busy set to Free, the event appears at the top of each day in the recipient's Outlook calendar — a visual reminder that doesn't block any of their own work time.. Manage your availability in your calendar. By default, when you add an item to your calendar or accept an invitation from someone else, the item is marked as Busy on your calendar:

To help make sure your message gets noticed, mark it as important or urgent. Select Set delivery options underneath the box where you type your message.

How to determine what is causing the problem after you do a clean boot. If your problem does not occur while the computer is in a clean boot environment, then you can determine which startup application or service is causing the problem by systematically turning them on or off and restarting the computer.