在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 ...
默认情况下会安装 64 位版本，除非 Microsoft 365 或 Office 检测到你已经安装了 32 位版本的 Microsoft 365 或 Office (或独立应用（如 Project 或 Visio ) ）。 在这种情况下，将改为安装 32 位版本的 Microsoft 365 或 Office。 若要从 32 位版本更改为 64 位版本 或反之亦然，需要 卸载 Microsoft 365 第一个 (包括你拥有的任何独立 Microsoft 365 应用，例如 ProjectVisio ) 。 卸载完成后，请再次登录到 www.office.com ，选择“ 其他安装选项 ”，再选择所需的语言和版本（64 位或 32 位），然后选择“ 安装 ”。
适用于:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 家庭版, Office 商业版, Office 365 小型企业版, Microsoft 365 管理员, 由世纪互联运营的 Office 365, 由世纪互联运营的 Office 365 - 管理员版, Microsoft 365 Mac 版, Office 365 Germany – 企业版, Office 365 Germany - 企业管理员版, Office.com
激活 Windows - Microsoft 支持
数字许可证（在 Windows 11 版本中称为数字授权）是 Windows 11 的一种激活方法，该方法不需要输入产品密钥。. 产品密钥是由 25 个字符组成的代码，用于激活 Windows。. 产品密钥将显示为：XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. 确定使用哪种激活方法后，请按照相应的使用 数字 ...
Screen mirroring and projecting to your PC or wireless display
Cast to a display from a Windows PC. You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.
创建适用于 Windows 的安装介质 - Microsoft 支持
了解如何创建用于安装或重新安装 Windows 7、Windows 8.1 或 Windows 10 的安装介质。.
获取 Windows Media Player - Microsoft 支持
包含在 Windows 10 的全新安装中，同时从 Windows 8.1 或 Windows 7 升级到 Windows 10。. 在某些版本的 Windows 10 中，它作为可启用的可选功能包含在内。. 若要执行该操作，请选择“开始”按钮 ，然后依次选择“设置” >“应用” >“应用和功能”>“管理可选功能”>“添加 ...
How to use the PC Health Check app - Microsoft Support
Windows 11 Windows 10. PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC.
Download and install apps - Microsoft Support
Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Set up Office apps and email on a mobile device. Small business help and learning. Learn how to download and install apps you need from your Microsoft 365 business subscription.
Uninstall or remove apps and programs in Windows
Uninstall or remove apps and programs in Windows. Windows 10. There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled.
Give your PC a Fresh Start - Microsoft Support
Give your PC a Fresh Start. Resetting your PC lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact. In some cases, a clean installation may improve your device's performance, security, browsing experience, and battery life.
Enable TPM 2.0 on your PC - Microsoft Support
TPM 2.0 is used in Windows 11 for a number of features, including Windows Hello for identity protection and BitLocker for data protection. In some cases, PCs that are capable of running TPM 2.0 are not set up to do so. If you are considering upgrading to Windows 11, check to ensure TPM 2.0 is enabled on your device.