查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

培训：使用我们常用的快速入门指南，快速开始使用你最喜爱的Microsoft 365 应用。

To increase security and performance, Windows 11 in S mode only runs apps from the Microsoft Store. If you want to install an app that isn't available in the Microsoft Store, or if you have Windows 10 Pro, Enterprise, or Education and want to upgrade to Windows 11, you'll need to permanently switch out of S mode.

Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed

Informazioni sulla condivisione di file in una rete in Windows. Nota: Questo articolo illustra come condividere file o cartelle tramite una rete locale (LAN), come i computer connessi all'interno di un'abitazione o del luogo di lavoro.Se stai cercando di scoprire come condividere un file tramite Internet, ad esempio con un amico o un membro della famiglia, OneDrive offre modi semplici per ...

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欺诈会影响所有人，并且大多数发布者和开发人员都有自己的一组规则来防止欺诈性购买。 Microsoft 通过保护帐户信息并确保玩家仅从受信任的零售商处购买，保护社区成员免受财务欺诈。

使用组织者的 Microsoft 帐户登录应用，然后选择“继续”。 选择“家庭”屏幕右上角的绿色“帐户”图标，然后选择“添加组织者”。 输入要添加成员的电子邮件地址，然后选择“发送邀请”>“完成”。 若要加入家庭组，受邀请者必须打开发送的电子邮件邀请，选择“立即加入”，然后按照屏幕上 ...

在移动设备上打开 Xbox 应用。 选择要在主屏幕上管理其支出的成员。或者选择“设置”，然后选择成员的帐户。 在“支出”下，选择“请求购买”游戏。 在“Microsoft 帐户余额”下，选择“充值”。 加载应用内浏览器时，选择所需的金额，然后选择“下一步”。 按照屏幕上的说明，使用文件中的 ...

When you delete an online-only file from your device, you delete it from your OneDrive on all devices and online. You can restore deleted files and folders from your OneDrive recycle bin on the web for up to 30 days for items stored in OneDrive personal (when you're signed in with a Microsoft account), or for up to 93 days for items stored in OneDrive for work or school or SharePoint in ...