Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key.

Learn more about family group roles, permissions, and how you share data with Microsoft and your family.

Planner sends email and push notifications for a variety of reasons. Some notifications can be controlled by plan members, and others by group owners.

With the Windows Insider Program, you’ll get all the latest Windows 11 and Windows 10 builds as soon as they’re available. Join the Windows Insider Program to be one of the first to experience the new ideas and concepts we’re building.In return, we want to know what you think.

登录时，你将获得最个性化的体验。 可以自定义主页并添加你的兴趣和其他个性化功能。 如果尚未登录，MSN 可以存储 cookies 中的某些设置。

通过 Wi-Fi 与其他设备共享 Internet 连接，将 Windows 电脑变成移动热点。 你可以共享 WLAN、以太网或手机网络数据连接。

Learn how the service process for Microsoft Surface works and how to request service online if your Surface needs repair.

Training: Learn how to use Outlook in Windows, MacOS, iOS or Android, and Outlook on the web through a series of Outlook training courses.

Instead of using a calculator, use Microsoft Excel to do the math! You can enter simple formulas to add, divide, multiply, and subtract two or more numeric values.

Try it! Change margins in your document to change the layout and make sure everything fits. Apply a predefined margin setting. Select Layout > Margins.