Open encrypted and protected messages - Microsoft Support
Learn how to identify and open encrypted and protected emails no matter what email client you're using.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2024, Outlook 2024 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook 2016 for Mac, Microsoft365.com, Outlook on the web, Outlook.com, Outlook for Mac 2011, Microsoft Office, New Outlook for Windows, Outlook for Android, Outlook for iOS, Outlook Web App
如何兑换礼品卡和代码 | Xbox Support
了解如何在移动设备、Windows 设备或 Xbox 主机上兑换 Microsoft/Xbox 礼品卡或其他代码。
Redeem a gift card or code to your Microsoft account
Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.
Applies To:
Microsoft account dashboard
Contact - Microsoft Support
Support for Windows 10, Office 2016 and Office 2019 has ended on October 14, 2025. Learn more about your options for Windows 10 or for Office.
Change the account used to send email messages - Microsoft Support
When you have set up multiple email accounts, you can choose which account to use when you send a message.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016
在电脑或 Mac 上下载、安装或重新安装 Microsoft 365 或 Office 2024 - Microsoft 支持
准备好安装 Microsoft 365 或 Office 2024 了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。 如果已兑换产品密钥、重新安装应用，或者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 2024, Office 2024 for Mac, Microsoft 365 for home, Microsoft365.com, 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
Activate Office for Windows - Microsoft Support
Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, 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, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Microsoft365.com, Project for Office 365
如何恢复遭到黑客攻击或受到威胁的 Microsoft 帐户
了解如何恢复遭到黑客攻击或受到威胁的帐户、接下来应执行的操作以及如何防止帐户在将来再受到威胁。
Applies To:
Outlook.com
如何登录 Outlook 网页版 - Microsoft 支持
Outlook 网页版 是组织使用的基于 Web 的 Outlook 版本，用于通过 Web 浏览器访问与工作或学校帐户关联的电子邮件、日历和联系人。 你的工作或学校帐户通常由组织中的某人分配给你。
Applies To:
Office for business, Office 365 Small Business, Outlook on the web, Outlook on the web for Exchange Server 2016
Microsoft 帐户安全信息和验证码 - Microsoft 支持
另请参阅 删除登录验证方法 更改你的 Microsoft 帐户的电子邮件地址或电话号码 将电子邮件地址或电话号码添加到Microsoft帐户 需要更多帮助吗？ 无法登录？ 如果无法登录到 Microsoft 帐户，大多数问题都可以通过我们的登录助手工具来识别。 登录助手 联系支持人员 如需技术支持，请转到“ 联系 ...
Applies To:
Microsoft account dashboard