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。 通过检查管理员上方是否显示电子邮件地址，确认管理员帐户也是你的 Microsoft 帐户。 如果显示了电子邮件地址，则这是 Microsoft 帐户。

Learn how to use PivotTable in Excel to calculate, summarize, and analyze data, revealing hidden patterns and trends.

If your computer is showing a black or blank screen in Windows, these troubleshooting tips could help get your system back up and running.

在浏览 Web 时，Microsoft Edge 可以轻松保存密码。 在桌面或移动设备上的 Edge 浏览器中输入新密码时，Microsoft Edge 会询问你是否要记住用户名和密码。 下次访问该网站时，浏览器将完成帐户信息的填写。

How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.

Explore your options and settings when you install add-ins.

Learn how to change the settings of the mouse buttons, mouse wheel, and pointer.

Download the latest Windows update from the Windows Update page in Settings for your device when it becomes available.

Use the People page to create, view, and edit contacts, contact lists, and groups. Create new contacts from scratch, or add someone as a contact from their profile card.

Most email apps like Outlook are able to automatically configure email server settings. If you need server settings or help finding your server settings, click on one of the links below: