Manage background activity for apps in Windows
Select the Start button, then select Settings > System > Power & battery > Battery usage. For an app that lets you manage the background activity, select More options (three vertical dots) > Manage background activity. On the settings page for that app, change the setting for Let this app run in the background. Here’s a summary of each option:
在 Microsoft Edge 中保存或清除密码 - Microsoft 支持
保存密码. 当 Edge 提供保存密码时，可以使用以下选项：. 选择“ 获取” 以确认希望 Edge 安全地保存密码。. (还可以编辑 Edge 捕获的凭据详细信息。. 选择 “X ” (关闭警报) 关闭套餐以保存密码。. Edge 不会保存你的密码，并且会在你下次在该页面上输入时再次 ...
Activate Office - Microsoft Support
Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device. Activate Office from Microsoft Workplace Discount Program.
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Microsoft 365 专属 Access, OneNote for Microsoft 365, Microsoft 365 专属 Publisher, Visio 计划 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 家庭版, Office 商业版, Microsoft 365 管理员, Project for Office 365
在 Outlook.com 和 Outlook 网页版中使用链接预览 - Microsoft ...
当将 URL 添加到电子邮件时，使用链接预览可以让您预览标题、 缩略图以及所链接网站的介绍等丰富内容。 关闭链接预览功能 在Outlook.com和Outlook 网页版中，在默认情况下链接预览是开启的，以便在您阅读和撰写电子邮件时，看到丰富的 Url 的预览。
适用于:
Office 商业版, Office 365 小型企业版, Outlook.com, 适用于 Exchange Server 2016 的 Outlook 网页版, 适用于 Exchange Server 2019 的 Outlook 网页版
Troubleshooting black or blank screens in Windows
If you experience a black or blank screen on your Windows device, try the following: To wake the screen, use one of the following keyboard shortcuts: Windows logo key + P to choose a presentation or projection display mode. Ctrl + Alt + Del to display security options. For a black screen, use the following keyboard shortcut: Windows logo key ...
COUNTIFS 函数 - Microsoft 支持
COUNTIFS 函数语法具有以下参数：. criteria_range1 必需。. 在其中计算关联条件的第一个区域。. criteria1 必需。. 条件的形式为数字、表达式、单元格引用或文本，它定义了要计数的单元格范围。. 例如，条件可以表示为 32、">32"、B4、"apples"或 "32"。. criteria_range2 ...
适用于:
Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App
Using email in Outlook on the web - Microsoft Support
Using email in Outlook on the web. If you use Outlook to view your work or school email in a web browser, you're using Outlook on the web. Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.
适用于:
Outlook.com, 适用于 Exchange Server 2016 的 Outlook 网页版
Contact Us - Microsoft Support
Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot.
ROUND 函数 - Microsoft 支持
ROUND 函数将数字四舍五入到指定的位数。. 例如，如果单元格 A1 包含 23.7825，而且您想要将此数值舍入到两个小数位数，可以使用以下公式：. =ROUND (A1, 2) 此函数的结果为 23.78。.
适用于:
Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
How to create a new Microsoft account - Microsoft Support
You can either use an email address you own as a Microsoft account, or create a new address by choosing "Get a new email address" or "Use your email instead" when you sign up. Microsoft email addresses are not reused, so even if an account was closed a long time ago, you cannot create a new account using the old email address.