Find your Windows product key - Microsoft Support
Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.
Applies To:
Microsoft account dashboard
Recovery options in Windows - Microsoft Support
Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.
Virus & threat protection in Windows Security - Microsoft Support
Virus & threat protection in Windows Security helps you scan for threats on your device. You can also run different types of scans, see the results of your previous virus and threat scans, and get the latest protection offered by Microsoft Defender Antivirus. Under Current threats you can:
Applies To:
Microsoft account dashboard
Contact us | Xbox Support
Check here for the known game issues that we're currently tracking and find out what you can do about them. Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.
使用 Microsoft Rewards 赢得积分 | Xbox Support
我们一直在添加新的积分赚取方式，你可以经常查看 Microsoft Rewards 网站掌握这些方法。. 有关详细信息，请参阅：. Microsoft Rewards. 注意 若要完成 Microsoft Rewards 任务，需要拥有有效的 Xbox Game Pass 订阅。. Xbox Game Pass 任务是从 Xbox Game Pass 库玩游戏时赢得积分的绝佳 ...
如何兑换礼品卡和代码 | Xbox Support
兑换礼品卡和充值码以进行 Xbox 购买和延长 Xbox 订阅。. 代码的长度为 25 个字符，包括数字和字母，并且采用横竖 5 个字符的 5x5 格式。. 代码可以是你从 Microsoft 或受信任的零售商处购买的数字卡或物理卡。. 请注意，如果帐户的未结余额或付款选项不再有效 ...
Getting the most out of Microsoft Rewards - Microsoft Support
Getting the most out of Microsoft Rewards. Here are some best practices for earning Microsoft Rewards points so you can redeem them for gift cards, games, sweepstakes, nonprofit donations, and more.
How to prevent and remove viruses and other malware
Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.
Xbox 付款错误消息和代码 | Xbox Support
如果你在尝试为购买付款时看到付款方式错误，请尝试使用其他付款方式。. 下面说明了如何更新支付方式：. 登录到要更新的 Microsoft 帐户。. Microsoft 帐户. 转到“付款和账单”，并选择“支付选项”。. 在“付款方式”下面，可以选择“添加新的付款方式 ...
Turn Windows Security on or off - Microsoft Support
If you want to use Windows Security, uninstall all of your other antivirus programs and Windows Security will automatically turn on. You may be asked to restart your device. Note: In previous versions of Windows 10, Windows Security is called Windows Defender Security Center.