Learn how to change the look and feel of Outlook.com or Outlook on the web.

了解如何在电脑或 Mac 上安装、重新安装或激活 Microsoft 365 或 Office 2019。

Erfahren Sie, wie Sie Ihren Windows-PC mit externen Monitoren verbinden und die Anzeigeeinstellungen anpassen.

Learn how to insert mathematical symbols into equations or text with the equation tools in Microsoft Word, Excel, PowerPoint, and Outlook.

This article shows you how to reassign certain keys to make it easier to accomplish your daily tasks.

A workbook is a file that contains one or more worksheets to help you organize data. You can create a new workbook from a blank workbook or a template. By default, a new workbook contains three worksheets, but you can change the number of worksheets that you want a new workbook to contain. You can also add and remove worksheets as needed.

Check the spelling of the name and the domain, e.g. rachel or rachael and .com or .co.uk. The account may have been closed. Learn more. If you see a password prompt, then your email is a Microsoft account. How to access your Microsoft account?

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

Use Find my device to locate and lock your lost or stolen Windows devices.

升级不同于更新，因为它会将电脑从上一版本的 Windows（如 Windows 10）升级到 Windows 11。 本常见问题解答旨在解决有关升级到 Windows 11 的问题。