Windows 11, version 21H2 update history - Microsoft Support
Windows 11, version 23H2 ; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)
保存文件 - Microsoft 支持
在早期版本的 Office 应用中保存文件. 在较新版本的 Office 中，可以通过从“另存为”框中的“另存为类型”列表中选择版本，将文件保存到应用的早期版本。 打开文档格式. Microsoft 365 支持以 OpenDocument 格式 (.odp) 保存文件的功能。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, PowerPoint 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016
Microsoft Easy Fix solutions have been discontinued
Select the type of troubleshooting you want to do, then select Run the troubleshooter.
Surface 恢复映像下载 - Microsoft 支持
注意: 如果你是管理组织中的 Surface for Business 设备的 IT 管理员，请参阅恢复工具 (Surface IT 工具包) 了解将受支持的 Surface 设备还原到其出厂状态的另一种方法。
Help in Notepad - Microsoft Support
Get answers to common questions about Notepad. To open Notepad, select the Start button, enter Notepad, then select Notepad from the results. Here are answers to a few common questions about Notepad:
Excel 函数（按类别列出） - Microsoft 支持
函数. 说明. cubekpimember 函数. 返回重要性能指示器 (kpi) 属性，并在单元格中显示 kpi 名称。 kpi 是一种用于监控单位绩效的可计量度量值，如每月总利润或季度员工调整。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
退出家庭组或删除成员 - Microsoft 支持
家庭成员和组织者可通过多种不同的方式离开或从Microsoft家庭组 中删除，具体取决于其角色。. 在离开之前，家庭成员和组织者 应删除他们不想留在组中的 已保存地点和位置警报 。 个人必须先删除其设置的位置警报，然后才能删除保存的地点。
February 13, 2024—KB5034763 (OS Builds 19044.4046 and 19045.4046)
Windows 10, version 22H2 update history; July 23, 2024—KB5040525 (OS Build 19045.4717) Preview; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651)
Internet Explorer help - Microsoft Support
Internet Explorer 11 support ended. Support for Internet Explorer 11 ended on June 15, 2022. If any site you visit needs Internet Explorer, you can reload it with Internet Explorer mode in Microsoft Edge.. Get started with Microsoft Edge
Download and install Skype for Business on Windows
Skype for Business makes it easy to connect and collaborate with coworkers and business partners around the world: Start instant message conversations and voice or video calls.
Applies To:
Skype for Business, Skype for Business Online