如何使用 Windows 11 中的任务栏 - Microsoft 支持
了解如何使用 Windows 11 中的任务栏功能。 使用任务栏设置隐藏任务栏、固定应用、更改位置等。
在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 Office 2021 - Microsoft 支持
准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com
LOOKUP 函数 - Microsoft 支持
如何在 Excel 中使用 LOOKUP 函数在单个行或列中搜索，并从第二行或列中的相同位置查找值。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
如何申请 Xbox 数字产品退款 | Xbox Support
详细了解如何为 Xbox 订阅或数字产品申请退款。
更改你的 Microsoft 帐户的电子邮件地址或电话号码 - Microsoft 支持
了解如何使用别名更改 Microsoft 帐户电子邮件地址或电话号码以登录到 Microsoft 帐户。
Applies To:
Microsoft account dashboard
Set up Outlook 2003 for POP or IMAP access to your email account ...
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About Microsoft Authenticator - Microsoft Support
Learn how you can use the free Microsoft Authenticator app to sign in to all your accounts without using a password.
Applies To:
Microsoft account dashboard
View and manage your subscriptions on Xbox | Xbox Support
Get info on how to sign up for, extend, or check the latest offers on subscriptions on your Xbox console.
Request a refund for digital games | Xbox Support
Find out how to submit a request for a refund for a purchase of digital Xbox content.
How to get service or repair for Surface - Microsoft Support
Learn how the service process for Microsoft Surface works and how to request service online if your Surface needs repair.