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
Contact - Microsoft Support
Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2
KB5012170: Security update for Secure Boot DBX
Issue. Next step. If BitLocker Group Policy Configure TPM platform validation profile for native UEFI firmware configurations is enabled and PCR7 is selected by policy, it may result in the update failing to install.. To view the PCR7 binding status, run the Microsoft System Information (Msinfo32.exe) tool with administrative permissions.
Get started with eye control in Windows - Microsoft Support
Set up an eye tracking device. This guide helps you to set up and calibrate your eye tracking device for use with Windows eye control. We have tested it with the Tobii Eye Tracker 4C device; your experience with other devices might vary.
下载适用于 Surface 的驱动程序和固件 - Microsoft 支持
若要查找所需驱动程序的链接，请选择下面的“下拉列表”，然后滚动浏览该列表以查找你拥有的 Surface 类型。 选择它后，你将看到该类型的 Surface 设备型号的可用链接。 选择型号的链接，以获取声音、显示器、以太网和 Wi-Fi 的最新固件和驱动程序。
从 PC 卸载 Office - Microsoft 支持
提示: 如果将 Microsoft 365 应用作为套件的一部分安装，例如 Office 家庭和学生版 或 Microsoft 365，请搜索套件名称。对于独立应用，请按 Project 或 Visio 等应用名称进行搜索。 在大多数情况下，如果单个应用包含在 Microsoft 365 套件中，则无法将其卸载。
Applies To:
Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com
我无法登录到我的Microsoft帐户 - Microsoft 支持
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。 该工具将要求你输入尝试登录时使用的电子邮件地址或移动电话号码，并检查你提供的详细信息。
Applies To:
Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 for home, Outlook.com, GroupMe, Microsoft account dashboard, Microsoft Teams, Microsoft Teams personal, Microsoft To Do, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows, Outlook for Android, Outlook for iOS
如何使用 Windows 11 中的任务栏 - Microsoft 支持
如果应用已打开，请在任务栏上找到应用的图标按钮，长按此按钮，然后向上滑动，直到出现“应用列表”。 如果你使用的是鼠标，请在任务栏上找到应用图标按钮，右键单击此按钮，然后选择“固定到任务栏”。
Fix connections to wireless displays or docks in Windows
If you’re having trouble connecting to your wireless display or wireless dock, try the following to fix things: Make sure your Windows 10 device supports Miracast.
Advanced search options - Microsoft Support
Notes: By default, all searches are AND searches. You must capitalize the NOT and OR operators. Otherwise, Bing will ignore them as stop words, which are commonly occurring words and numbers that are omitted to speed a full-text search.