Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

如果出现“让我们开始吧”屏幕，其中包含试用、购买或激活 Office 的选项，这意味着新电脑安装的 Office 为 Microsoft 365 家庭版 1 个月试用版。只有支付 Office 产品密钥卡的相关费用，才会从电脑制造商处收到密钥。 你可开始试用 Microsoft 365 家庭版，也可购买 Office。

With PowerPoint for the web you create presentations right in your browser. Create and save your presentations in your OneDrive, and edit and share them online.

注意: 若要访问 Windows 8.1 中的桌面图标设置，请从屏幕右边缘向内轻扫，然后选择“ 搜索”。在搜索框中键入“桌面图标”，然后选择“显示或隐藏桌面上的通用图标”。

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：

Note: Offers vary by country.Be sure to redeem your rewards points in the same region you signed up in. Do not use a VPN while trying to redeem points. When redeeming points, use a mobile or landline phone number for authentication and not a VoIP phone number.

Update the information you want, such as About me, Projects, and more.

Select Payment & billing, and then select Payment options.; Under Payment methods, select the payment method you tried to use to make the purchase.. For credit cards, debit cards, and direct debit, do the following: Select View or edit card and adjust the billing address as needed.; Select Save when finished.; For PayPal, do the following: If the email address is incorrect for your PayPal ...

详细了解 Xbox 数字代码和礼品卡，以及如何解决兑换内容的问题。

On the View tab, in the Master Views group, choose Slide Master.. The slide master is the largest slide image at the top of the slide thumbnail list, to the left of your slides. Associated slide layouts are positioned beneath the slide master.