Support for Office 2021 will end on October 13, 2026. Learn more about your options for Office.

Need help setting up an XBOX profile or signing in to XBOX on your console, PC, or mobile device? This solution will help you sign in or create a new account.

Outlook 网页版 是组织使用的基于 Web 的 Outlook 版本，可通过 Web 浏览器访问与工作或学校帐户关联的电子邮件、日历和联系人。 你的工作或学校帐户通常由组织中的某人分配给你。

Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Alpha Skip-Ahead ring today. Continue reading below to learn all about what's included with this update.

Microsoft Office Word Viewer Can you show me how to set up Microsoft 365 Word viewer? Explain how to review the Copilot summary. Give me Microsoft Microsoft 365 Word Viewer.

可以查看和清除存储在单个设备上、所有同步设备和云中的 Microsoft Edge 浏览历史记录。 你可以随时选择清除浏览历史记录。 清除设备上存储的浏览数据 若要清除 Microsoft Edge 浏览数据，请首先确定是只在当前使用的设备上删除数据，还是在所有同步设备上删除数据。 若仅要在当前使用的设备上清除 ...

MICROSOFT SUPPORT Contact Microsoft customer support The type of support Microsoft provides depends on the product you're calling about and if you have a product for home or for business use. It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365 ...

本文介绍如何使用 Microsoft 拼音和 Microsoft 五笔的 Microsoft 简体中文输入法编辑器 (IME)，包括输入法设置、功能和键盘快捷方式。

Improvements and fixes This security update contains improvements and fixes for the following nonsecurity issues in SharePoint Server Subscription Edition: Fixes an issue in which SharePoint 2010 workflows don't initiate after the June 2026 update is installed. Known issues in this update After you run PSConfig, run the following PowerShell commands. This setting disables a defense-in-depth ...

从确保设备可以运行 Windows 11 到备份文件和安装 Windows 11，了解如何为 Windows 11 升级做好准备。