重要: 需要 Amazon 帐户才能从Amazon Appstore下载移动应用。 使用手机网络数据 如果你的电脑支持手机网络连接，并且你有移动运营商的数据套餐，则Amazon Appstore和任何已安装的移动应用都可以使用手机网络数据。

Windows Photo Viewer isn't part of Windows 10, but if you upgraded from Windows 7 or Windows 8.1, you might still have it. To check, press and hold (or right-click) a photo in File Explorer, and select Open with.If Windows Photo Viewer isn't in the list, you cannot install it on Windows 10.

The first time you open an app like Word or PowerPoint you might need to sign in with your new business email address and password to activate the app. Tip Signing in connects the apps to the rest of Microsoft 365, letting you save files to the cloud, share files with others, and have your documents save automatically as you work.

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获取有关企业和消费者如何以及在哪里访问 Microsoft Copilot 的最新信息。 如果你有业务订阅，并且已准备好订阅 Microsoft 365 Copilot ，请访问 Copilot for Microsoft 365。 如果你已经是订阅者， 请在此处开始。 如果你有企业订阅，请致电Microsoft帐户代表购买 Microsoft 365 Copilot 。

準備安裝了嗎？ 開始之前，請確定您的PC或Mac符合 系統需求。 如果您已兌換產品密鑰、只是重新安裝應用程式，或是知道您已透過公司或學校指派授權，您可以跳到登入以 下載並安裝 Microsoft 365 或 Office 章節。 不過，如果這是您 第一次 安裝 Microsoft 365或 Office，您可能需要先執行一些步驟。

If you try to add an IMAP account to Outlook, for example a Gmail account, Apple account, Yahoo account, or an account from your local ISP, and you're not prompted to enter your password, use the following steps to work around the problem.

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。

Get Microsoft 365 support, help, and learning resources. Organize your life, expand your creativity, and protect what’s important with Microsoft 365

To prevent users from encountering this issue, Copilot in Windows (in preview) was previously unavailable on devices that have a third-party wallpaper app installed. Troubleshooting If you have questions or need help activating or troubleshooting Windows, see our help topics below: