groupby 函数允许通过公式创建数据摘要。它支持沿一个轴进行分组并聚合关联的值。 例如，如果你有一个销售数据表，则可以按年份生成销售摘要。

Look up a forgotten username using other information. Look up your username using your security contact phone number or email address. Search

Select this option to import Internet Explorer Browsing History into Microsoft Edge. Because the Top sites shown in the New tab page are generated based on the browsing history in Microsoft Edge, you may see the Top sites change based on the imported history data.

Sign out of Teams. While it's a good idea to remain signed in to continue receiving chats, notifications, incoming calls, and other activities, sometimes you might want to sign out of Teams to use another account or for other reasons.

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

Add an interactive checklist. Checklist is a feature that allows you to insert an interactive list in Word for Web. You can check and uncheck the checklist and keep track of the tasks that you are performing.

Message recall is available after you select Send and is available only if both you and the recipient have a Microsoft 365 or Microsoft Exchange email account in the same organization.Messages sent to or from a Hotmail, Gmail, or live.com account can't be recalled.

See how Xbox cloud gaming works on Android, Apple, and Windows devices, as well as Xbox consoles and Samsung smart TVs.

Notes: If you don't see Go to Microsoft Store on the Activation page, contact your organization's support person.. If you made a substantial hardware changes to your device (such as replacing the motherboard) and you have a valid product key, try to activate Windows by phone.

To find downloads on your PC: Select File Explorer from the taskbar, or press the Windows logo key + E.