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Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Before you begin, make sure your PC or Mac meets the system requirements. If you already redeemed a product key, you're simply reinstalling the apps, or you know you have an assigned license through work or school, you can skip ahead and go to the section sign in to download and install Microsoft 365 or Office.
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
Download and install or reinstall Office 2019, Office 2016, or Office ...
From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options. Choose the language and bit version you want, and then select Install.
Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Use the Office offline installer - Microsoft Support
Step 1. Download the offline installer from your account portal. To download the offline installer, go to www.office.com. If you're not already signed in with the Microsoft account associated with your copy of Microsoft 365 or Microsoft 365 do that now.
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
KB5034439: Windows Recovery Environment update for Windows Server 2022 ...
This update automatically applies Safe OS Dynamic Update ( KB5034235) to the Windows Recovery Environment (WinRE) on a running PC to address a security vulnerability that could allow attackers to bypass BitLocker encryption by using WinRE. For more information, see CVE-2024-20666.
How to use the PC Health Check app - Microsoft Support
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. How to open PC Health Check.
Microsoft 安全公告:不安全的库加载可能允许远程执行代码
针对每个环境而安装的 MANIFEST 文件 (.manifest) 和 MUM 文件 (.mum) 将单独列出。MUM 和 MANIFEST 文件以及关联的安全目录 (.cat) 文件对于维护已更新组件的状态必不可少。安全目录文件(属性未列出)均使用 Microsoft 数字签名进行签名。
KB5015684: Featured update to Windows 10, version 22H2 by using an ...
The enablement package is a great option for installing a scoped feature update like Windows 10, version 22H2 as it enables an update from version 2004, 20H2, 21H1, or 21H2 to version 22H2 with a single restart, reducing update downtime. This enables devices to take advantage of new features now.
Find and install your Microsoft downloads from Microsoft Store
To find a specific download, sign in to the Order history page with the Microsoft account you used to make the purchase. Find the software, and then select Product key/Install. Note: If you're having problems installing an app from the Microsoft Store, see Fix problems with apps from Microsoft Store. If you're looking for download and ...
Applies To: Microsoft account dashboard
Create an ISO file for Windows 10 - Microsoft Support
Windows 10. Unlike in previous versions of Windows, you’ll need to use the media creation tool to create an ISO file to install Windows 10. Make sure you have a license to install Windows 10, and then follow these steps: On the Windows 10 download page, download the media creation tool by selecting Download now, then run the tool.
Download drivers and firmware for Surface - Microsoft Support
Manual updates are useful if you need to update an offline device, update many devices that are all the same model, or if you’re creating system images for your organization. Note: If you want to manually update the operating system for Windows 10 or Windows 11, use the methods in Download Windows 10 or Download Windows 11.