An alphabetized list of field codes available for mail merge, forms, and other uses in your documents.

Smart App Control is a feature of Windows 11 that helps to block malicious, untrusted, or potentially unwanted apps from running on your device.

A list of devices supported with Link to Windows and other features in the Phone Link app.

Learn how to download, install, and configure Language Accessory Packs for Microsoft 365 to add additional display, help, and proofing tools to Microsoft 365.

Keeping leading zeros and large numbers in Excel. Use a custom format to keep the leading zeros. If you want to resolve the issue just within the workbook because it's not used by other programs as a data source, you can use a custom or a special format to keep the leading zeros.

Learn how to use Narrator, a screen-reading app built into Windows, with this complete guide and how-to articles.

Learn how to change the IP address or DNS settings for Windows PCs on your network.

了解如何解决从适用于电脑的 Xbox 应用安装或运行游戏的问题。

Turn airplane mode on or off in Windows. Airplane mode gives you a quick way to turn off all wireless communications on your PC.

了解如何解决登录 Microsoft 帐户时出现的问题。 解决密码验证、锁定帐户和其他 Microsoft 帐户登录问题。