为什么需要验证码？ 当你登录到你的 Microsoft 帐户时，我们可能会要求提供其他证明，证明确实是你的帐户。 最多可以添加 10 种不同的方法来验证登录，并且可以选择：

如果你是 Microsoft 365 商业版订阅者，并且你的演示文稿存储在 工作或学校 OneDrive 或 Microsoft 365 中的 SharePoint 上，则可以打印演讲者备注。 有关详细信息，请参阅打印 PowerPoint 幻灯片、讲义或备注。 在演示时查看演讲者备注

Important: Workbook links are considered potentially unsafe and must be enabled when you open a formula workbook.When you open a formula workbook, click Enable Content in the Message Bar to allow the workbook links to function. If you don't, Excel keeps the most recent values and disables refreshing the links with values from the data workbook.

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

Screen time limits in Microsoft Family Safety are a great way to balance online habits within your family group. You decide when and for how long family members can use their connected Windows, Xbox and mobile devices.

注意: 最好在开始创建各张幻灯片之前编辑幻灯片母版和版式。这样，添加到演示文稿中的所有幻灯片都会基于你的自定义编辑。 如果在创建各张幻灯片之后编辑幻灯片母版或版式，则需要在普通视图中将更改的布局重新应用到演示文稿中的现有幻灯片。

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注意: 如果已将 工作或学校 OneDrive 同步到计算机（使用的是以前的同步应用）并且只安装了 同步应用，则在 OneDrive 安装期间，将不会看到“这是你的 OneDrive 文件夹”或“同步你的 OneDrive 中的文件”屏幕。同步应用 将自动接管在之前使用的相同文件夹位置中进行的同步。

Nota: Il modo migliore e sicuro per ottenere gli aggiornamenti dei driver in Windows è sempre attraverso Windows Update.Se si verificano problemi con Windows Update, è possibile verificare se uno dei collegamenti in Aggiornamento Windows può essere utile per prima cosa.

The Xbox 360 500 GB Hard Drive is the best option for media enthusiasts. You'll have 500 GB of space for games, HD TV and movies, Games on Demand, game demos and add-ons, music, and much more.