Learn how to back up apps, settings, files, photos, and Microsoft Edge favorites and preferences on your Windows PC.

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

Last updated: July 2024. For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of Outlook problems.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

Get answers to some common questions about 32-bit and 64-bit versions of Windows.

How to use the SUBTOTAL function in Excel to return a subtotal in a list or database.

Learn how to open MSConfig in Windows 10 using the taskbar search bar and access system configuration.

As you type inside the To, Cc, or Bcc boxes, Outlook suggests recipients. The Auto-Complete List can be turned off.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

了解如何在 Windows 10 和 Windows 11 中添加用户帐户。 有了帐户之后，每个人都可拥有单独的文件、浏览器收藏夹和私人桌面。