Internet Explorer 下载 - Microsoft 支持
Microsoft Edge 是 Microsoft 推荐的浏览器. Windows 8.1不再支持 Internet Explorer 11。 相反,我们建议切换到 Microsoft Edge。 Microsoft Edge 是为了给你带来最好的上网体验而建立的,让你在浏览网页时有更多自主性,并获得更多隐私保护。
Windows摄像头、麦克风和隐私 - Microsoft 支持
在Windows,将相机和麦克风作为设备的一部分,Teams视频呼叫、拍照、录制视频等。 许多应用和服务都会请求并使用摄像头或麦克风,而 Windows 设置让你控制哪些应用可使用你的摄像头或麦克风。
Contact - Microsoft Support
Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2
Turn recurring billing on or off for a Microsoft subscription
How to turn on recurring billing. When recurring billing is turned on, you’ll be billed for your subscription on your renewal date. If you turn off recurring billing, your subscription will expire on the date shown, and you won't be billed in the future.
Applies To: Microsoft account dashboard
Use Game Mode while gaming on your Windows device
Prevents Windows Update from performing driver installations and sending restart notifications; Helps achieve a more stable frame rate depending on the specific game and system
解决更新 Windows 时遇到的问题 - Microsoft 支持
重要: 在尝试以下任意解决方案之前,请确保先备份你的个人文件。 你可以备份 Windows 电脑,或者插入 U 盘并使用文件资源管理器将重要文件拖动和复制到 U 盘。 如果你是使用 Microsoft 帐户登录到 Windows,系统设置将在连接到 Internet 后立即更新,然后自动还原。
管理 Microsoft 365 订阅或 Office 产品 - Microsoft 支持
登录到 microsoft365.com 以查看Microsoft 365 工作或学校帐户。 登录. 安装和管理应用。 在 Office 应用 卡上,选择“ 管理”,然后选择“ 安装 ”以安装或重新安装最新的桌面应用或其他应用,例如 Project 或 Visio 。(只要管理员 为你分配了许可证 并授予你自安装的权限,安装选项就可用。
Applies To: Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Word for the web, OneNote for the web, PowerPoint for the web, Excel 2021, Word 2021, Outlook 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, PowerPoint 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, Microsoft 365 admin, Outlook on the web, Word Web App, Microsoft account dashboard, New Outlook for Windows
适用于 Windows 的节电使用技巧 - Microsoft 支持
节能器可自动管理系统进程和电源使用情况,以实现电脑性能和更长的电池使用时间的最佳平衡。 选择“ 启动 > 设置 > 系统 > 电源 & 电池 ”。 如果希望每当电池电量低于特定水平时打开节能器,请选择“ 节能器”以展开选项,然后在 电池电量处于时打开节能模式旁边,选择所需的电池电量。
Sum data by using a query - Microsoft Support
This article explains how to use a type of function in Access called an aggregate function to sum the data in a query result set. This article also briefly explains how to use other aggregate functions, such as COUNT and AVG to count or average the values in a result set. In addition, this article explains how to use the Total Row, a feature in Access that you use to sum data without having to ...
Applies To: Access for Microsoft 365, Access 2021, Access 2019, Access 2016
SUMIF 函数 - Microsoft 支持
sum_range 可选。要添加的实际单元格,如果要添加在范围参数指定以外的其他单元格。如果省略sum_range参数,Excel就会添加范围参数中指定的单元格(与应用标准的单元格相同)。. Sum_range 的大小和形状应该与范围相同。如果不这样做,性能可能会受到影响,而且该公式将对从sum_range中第一个单元格 ...
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