Sign in to Microsoft 365 | Microsoft Support
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
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, Project Online Desktop Client, Publisher for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, Excel 2024 for Mac, Word 2024 for Mac, Outlook 2024 for Mac, PowerPoint 2024 for Mac, OneNote 2024 for Mac, Office 2024 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, OneNote for Mac, Microsoft 365 for home, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac, Project for Office 365
How to add your accounts to Microsoft Authenticator
Learn how to add all your different accounts to the Microsoft Authenticator app.
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.
My digital code or gift card doesn’t work | Xbox Support
Find out how to troubleshoot issues redeeming Xbox digital codes and gift cards.
如何在 Outlook 中添加和更改电子邮件签名 | Microsoft Support
摘要 Email 签名在您的业务通信中创建专业一致性，并确保收件人在每封邮件中都有您的联系信息。 在 Outlook 中，可以针对内部与外部、个人与业务) (不同目的设置多个签名，并选择是否将它们自动包含在新电子邮件、答复或转发中。 签名可以包含文本、链接、图片和图像 (如手写签名或徽标 ...
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Office 365 Small Business, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
使用系统文件检查器工具修复丢失或损坏的系统文件 | Microsoft Support
当关键的 Windows 系统文件丢失或损坏时，操作系统可能会开始出现故障。 常见症状包括 Windows 功能无法正常工作、系统错误或 Windows 无响应或冻结。 如果遇到这些问题，可以使用内置的 Windows 修复工具（部署映像服务和管理 (DISM) 和系统文件检查器 (SFC) ）扫描损坏的系统文件并还原丢失或损坏的 ...
查找 BitLocker 恢复密钥 | Microsoft Support
摘要 当 BitLocker 无法在 Windows 中自动解锁加密驱动器时，需要 BitLocker 恢复密钥。 这是一个 48 位数字，可让你重新获得对驱动器的访问权限。
Configure Windows Hello | Microsoft Support
Windows Hello is a more personal and secure way to sign in to your Windows device. Instead of using a password, with Windows Hello you can sign in using facial recognition, fingerprint, or a PIN. These options help make it easier and safer to sign into your PC because your PIN is only associated with one device, and it's backed up for recovery with your Microsoft account. You can use the ...
Cómo iniciar sesión en Hotmail | Microsoft Support
Hotmail ahora está Outlook.com Para iniciar sesión en Hotmail, necesitarás el nombre de usuario y la contraseña de tu cuenta de Microsoft. Inicie sesión en outlook.live.com
Applies To:
Outlook.com
使用安装介质重新安装 Windows | Microsoft Support
适用于 Windows 的安装媒体是一种多功能工具，可用于多种用途，包括用于恢复的就地安装和新安装。 此媒体通常在 U 盘或 DVD 上创建，其中包含在设备上安装或重新安装 Windows 所需的所有文件。 当系统遇到严重问题（例如软件损坏或硬件故障）时，它尤其有用，这些问题会阻止系统启动或正常运行 ...