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Where are my contacts in Windows 10? - Microsoft Support
Learn how to filter the contacts in the People app on your Windows 10 PC so you can see all of your Skype contacts.
SUMIFS function - Microsoft Support
How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.
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, Excel Web App
Microsoft Bing help - Microsoft Support
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
Use live captions to better understand audio - Microsoft Support
Live captions helps everyone, including people who are deaf or hard of hearing, better understand audio by providing automatic transcription. To make more content accessible to more people, live captions now has the ability to provide translations and will turn any audio that passes through your PC into a single English-language caption experience.
全球客户服务电话号码 - Microsoft 支持
本页提供 Microsoft 客服的电话号码。
向 Microsoft 帐户兑换礼品卡或代码 - Microsoft 支持
了解如何兑换礼品卡、代码或 Office 产品密钥,以及如何在 Microsoft Store 在线商店、Windows 或 Xbox 上花费余额。
Applies To: Microsoft account dashboard
在 Microsoft Teams 中加入会议 - Microsoft 支持
如需了解详细信息,请观看加入 Teams 会议视频。. 通过链接加入. 只需通过一个连接即可加入 Teams 会议。 在会议邀请中选择“ 立即加入会议”,将其带到一个页面,你可以在其中选择加入 Web 或下载桌面应用。 如果你已拥有 Teams 应用,会议将自动打开。
Applies To: Microsoft Teams
Reduce the file size of your PowerPoint presentations
By default, when you edit an image, the data from the original is retained (to ensure the image can be restored). Discarding it means that you can't restore the changes you make, but it will reduce your file size. Lowering the default resolution for images also reduces your overall file size. Go to File > Options > Advanced.
Applies To: PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016
How to log in to Microsoft Teams - Microsoft Support
Learn how to log in to Microsoft Teams with your Microsoft 365 account. This step-by-step guide from Microsoft Support walks you through the process of accessing Teams on desktop, web, and mobile devices.
Applies To: Microsoft Teams
在 Microsoft Edge 中打印 - Microsoft 支持
Microsoft Edge 中的打印过程非常简单,可通过多种方式完成。 使用键盘快捷方式: 在 Windows 上按 Ctrl + P 或在 Mac 上 按 Command + P 打开打印对话框。