登录到 microsoft365.com 以查看Microsoft 365 工作或学校帐户。 登录. 安装和管理应用。 在 Office 应用 卡上，选择“ 管理”，然后选择“ 安装 ”以安装或重新安装最新的桌面应用或其他应用，例如 Project 或 Visio 。(只要管理员 为你分配了许可证 并授予你自安装的权限，安装选项就可用。

View more Microsoft account help topics. Need more help? Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.If you still need help, select Contact Support to be routed to the best support option.

注意 取消 Xbox 订阅时，可能会收到立即取消或在计费周期结束后取消的选项。 如果立即取消，你将立即失去通过该订阅收到的所有访问权限和特权。 如果选择在计费周期结束后取消，则订阅权益将一直延续到下一个付款期，并且不会再向你收费。

If you don't see it, there should be a search bar along the top of your workbook. In that search bar, type open, and then select Open in Desktop App. The Excel app will launch and open the file. Continue working and save.

To create the installation media, here's what you'll need: A PC with a reliable internet connection. The download time will vary, depending on your internet connection.

Using the new Microsoft Teams, you can now be logged into multiple work, school, and personal accounts on the Windows desktop app. Easily switch back and forth between organizations, including guest organizations. See and change your notification settings for your various accounts.

Get productive quickly with Microsoft 365 videos and tutorials. Explore Microsoft 365 training guides and tips to collaborate with anyone, anywhere.

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

Keys with an Fn key or F Lock provide two sets of commands for many keys. This includes the top row of standard function keys (F1–F12). Standard commands are labeled on the front of the keys (such as F3).

Let's say that you need to sum values with more than one condition, such as the sum of product sales in a specific region. This is a good case for using the SUMIFS function in a formula.. Have a look at this example in which we have two conditions: we want the sum of Meat sales (from column C) in the South region (from column A).. Here’s a formula you can use to acomplish this: