Create a system restore point. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Learn how to join a Microsoft Teams meeting by link, calendar, channel, chat, or by calling in.

Get the steps for how to transfer photos and videos from your portable devices to your PC.

The MATCH function searches for a specified item in a range of cells, and then returns the relative position of that item in the range. For example, if the range A1:A3 contains the values 5, 25, and 38, then the formula =MATCH(25,A1:A3,0) returns the number 2, because 25 is the second item in the range.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Outlook stores backup files containing email, calendars, contacts, tasks, and notes on your computer. Learn how to find them.

It's easy to create a message in Microsoft Outlook that uses voting buttons to ask your recipients questions with a specific and limited set of answers.

Hier erfahren Sie, wie Sie sich bei Outlook im Web anmelden und auf Ihre E-Mails, Kontakte und Kalender zugreifen.

Learn how to create an Xbox profile. You’ll need a Microsoft account to create an Xbox account. A Microsoft account is not the same thing as an Xbox account, although you can use the same email address for both.

Tìm hiểu cách cài đặt, cài đặt lại hoặc kích hoạt Microsoft 365 hoặc Office 2019 trên PC hoặc máy Mac.