Search is right there on your taskbar, ready to help you find whatever you’re looking for. Use the search box to find your apps, files, settings, help, and more on Windows—plus unlock the power of the web with quick access to online information like time zone conversions, fact lookup, trending searches, and search results for navigating to websites faster.

To enhance your Microsoft 365 experience in new Outlook for Windows, Outlook.com, Outlook for iOS, Outlook for Android, and new Outlook for Mac, you can now sync your non-Microsoft accounts (including their emails, contacts, and events) to the Microsoft Cloud.

计算机连接到投影仪且用户启动幻灯片放映 时，演示者视图显示在计算机屏幕上，投影仪屏幕上只显示幻灯片。 使用“演示者视图”，用户可在演示时查看备注，而观众只能看到幻灯片：

There are times when you don't want messages from a specific person or domain to end up in your Junk Email folder. Messages from addresses or domains on the safe senders list won't get moved to your Junk Email folder.

Disable all macros except digitally signed macros Macros are disabled, and security alerts appear if there are unsigned macros present.However, if the macro is digitally signed by a trusted publisher, the macro just runs. If the macro is signed by a publisher you haven't trusted yet, you are given the opportunity to enable the signed macro and trust the publisher.

假设需要对具有多个条件的值求和，例如特定区域中产品销售额的总和。 这是在公式中使用 sumifs 函数 的一个很好案例。. 请查看此示例，其中有两个条件：我们希望得到 南部 区域（列 a 中）中 肉类 总销售量（列 c 中）。. 下面是可用于完成此操作的公式：

发布时间：2021 年 8 月. 本文适用于由于电脑当前无法安全启动而无法升级到 Windows 11的用户。 如果你不熟悉此级别的技术详细信息，我们建议你查阅电脑制造商的支持信息，获取特定于你的设备的更多说明。

Find Microsoft Forms help and tutorial content. Explore Microsoft Forms training courses, create a survey, share your form, and more.

As you browse the web, you'll see an icon in the address bar that indicates the security of the connection to the site you're visiting. This icon helps you determine if you can safely send and receive information from the site.

The My Account portal helps you to manage your work or school account by setting up and managing your security info, managing your devices, and viewing how your organization uses your data. Sign in