If there was an unusual sign-in attempt for your account, you'll get an email or text message. We'll send a message to all your alternate contact methods.

Use rules to automatically perform specific actions on email that arrives in your inbox. For example, you can create rules that will change the importance level of messages as they come in, automatically move them to other folders, or delete them based on certain criteria.

You weren't able to find your username. If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account.

You can open an Excel workbook and collaborate with others at the same time using co-authoring. This article will explain how.

If your Outlook.com account has been blocked, follow the instructions in this article to unblock it.

Hotmail 現在為 Outlook.com。 瞭解如何登入以存取您的 Outlook.com、Hotmail、Live 或 MSN 電子郵件帳戶。

Learn how Smart charging in Windows can help your battery last longer over time.

Find out how Microsoft uses activity history data to provide personalized cross-device experiences and to help improve its products and services.

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

了解如何使用 PIN、面部识别或指纹通过 Windows Hello 登录电脑。