What is Microsoft 365? - Microsoft Support
Microsoft 365 is our cloud-powered productivity platform. With a subscription to Microsoft 365, you can get: The latest productivity apps, such as Microsoft Teams, Word, Excel, PowerPoint, Outlook, OneDrive, and so much more.
适用于:
Microsoft 365 家庭版, Office 商业版, Office 365 小型企业版, Microsoft 365 管理员
Speichern oder Löschen von Kennwörtern in Microsoft Edge
Microsoft Edge vereinfacht das Speichern Ihrer Kennwörter beim Surfen im Web. Wenn Sie ein neues Kennwort im Edge-Browser auf Ihrem Desktop oder mobilen Gerät eingeben, fragt Microsoft Edge, ob Sie Ihren Benutzernamen und Ihr Kennwort speichern möchten.
对 Office 使用产品密钥 - Microsoft 支持
如果通过 Microsoft 工作区折扣计划 购买了 Microsoft 365 如果通过雇主的 工作区折扣计划(以前称为家用许可计划) 权益安装 Office 专业增强版、Visio Professional 或 Project Professional，请在安装产品后输入产品密钥。
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Microsoft 365 专属 Access, OneNote for Microsoft 365, Microsoft 365 专属 Publisher, Visio 计划 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, OneNote 2016, Project 专业版 2016, Project Standard 2016, Publisher 2016, Visio 专业版 2016, Microsoft 365 家庭版, InfoPath 2013
Lock or unlock specific areas of a protected worksheet
How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.
适用于:
Microsoft 365 专属 Excel, Excel 2021, Excel 2019, Excel 2016
Activate Office 2007 - Microsoft Support
To activate an Office 2007 program, you must enter your 25-digit product key, if you haven't already done so during Setup.
适用于:
Picture Manager 2007, SharePoint Designer 2007, Excel 2007, Word 2007, Outlook 2007, PowerPoint 2007, Access 2007, OneNote 2007, Project 2007, Project Standard 2007, Publisher 2007, Visio 2007, Visio 标准版 2007, Office 2007, InfoPath 编辑模式 2007
我无法登录到我的Microsoft帐户 - Microsoft 支持
了解如何解决登录 Microsoft 帐户时出现的问题。 解决密码验证、锁定帐户和其他 Microsoft 帐户登录问题。 如果无法登录到Microsoft帐户，大多数问题都可以通过登录帮助程序工具进行识别。
适用于:
Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 家庭版, Outlook.com, GroupMe, Microsoft 帐户仪表板, Microsoft Teams, Microsoft Teams 个人版, 微软待办, OneDrive (家庭或个人), OneDrive for Mac, Windows 版 OneDrive, Outlook for Android, Outlook for iOS
Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Show or hide the ribbon in Office - Microsoft Support
Show the ribbon when hidden, and set options to shows tabs and commands, just tabs, or automatically hide the ribbon for the maximum document space.
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016
SUMIF 函数 - Microsoft 支持
语法 SUMIF(range, criteria, [sum_range]) SUMIF 函数语法具有以下参数： 范围 必需。希望通过标准评估的单元格范围。 每个范围内的单元格必须是数字或名称、数组或包含数字的引用。 空白和文本值将被忽略。
适用于:
Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Change an email signature - Microsoft Support
How to change your Outlook signature or add a signature. Whether it’s a new job title (congratulations!) or a phone number change, make sure you keep your email message signature up-to-date.
适用于:
Microsoft 365 专属 Outlook, Outlook 2021, Outlook 2019, Outlook 2016