下载并安装或重新安装Office 2021、Office 2019 或 Office 2016 应用对象 重要: 对 Office 2016 和 Office 2019 的支持将于 2025 年 10 月 14 日结束，并且没有扩展安全更新。 所有 Office 2016 和 Office 2019 应用将继续正常运行。

Support for Office 2016 and Office 2019 will end on October 14, 2025. All of your Office 2016 and Office 2019 apps will continue to function, but you could be exposed to security risks.

Alternatively, if you have successfully installed Microsoft 365 or Office on your computer, but need help with activating or reactivating it, please go to: For Microsoft 365 - Activate Office. For Microsoft 365 for Mac - Activate Office for Mac. For Office 2021, 2019, or 2016 - Activate Office after reinstalling or installing on a different device.

On a Mac? See Check for Office for Mac updates automatically. If you're not sure what version of Office you have, see What version of Office am I using? How to update Office for Windows To check for Office for Windows updates, do the following: Open any Office app, such as Word, and create a new document. Go to File > Account (or Office Account if you opened Outlook). Under Product Information ...

提示: 如果您看到無法開啟 Microsoft_Office_2016_Installer.pkg 的錯誤，這是因為它來自無法辨識的開發人員，請等候 10 秒，然後再試著再次按兩下安裝程式套件。

To download the offline installer for Internet Explorer 11, choose your language and system below.

This package includes updates and fixes to the Microsoft Defender for Endpoint EDR sensor that is used by Microsoft Defender for Endpoint installed on Windows Server 2012 R2 and Windows Server 2016.

RSS Feeds are an easy way to stay up to date with your favorite websites, such as blogs or online magazines. If a site offers an RSS feed, you get notified whenever a post goes up, and then you can read a summary or the whole post. And, if you turn on RSS Feed Synchronization in Outlook, any feeds you subscribe to and their posts are delivered straight to your Outlook RSS Subscription folder ...

There are several ways to archive messages in Outlook. The methods that you can use depend on the type of email accounts that you have set up in Outlook. All accounts have access to an Archive folder. For Microsoft 365, Outlook.com, and Exchange accounts, the Archive folder is one of Outlook's default folders, like Inbox, Sent Items, and the Deleted Items folder. This folder can't be deleted ...

For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview, see the update history page for Windows Server 2022, Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard. Improvements This security update includes quality improvements. The following summary outlines key ...