Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

A Microsoft account is a personal account required for access to Microsoft’s products and services.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Focus is a new feature in Windows 11 that helps you minimize distractions. To help you stay on track, it integrates with the Clock app with features like a focus timer and music integration.

Discover the latest updates for Windows 10, including improvements and fixes, known issues, and guidance on how to get the update.

Learn more about updates for Windows 10 version 1903, including improvement and fixes, any known issues, and how to get the update.

如果尝试登录到帐户，但收到一条消息，表示该帐户被锁定，则这是因为与该帐户关联的活动可能违反了我们的使用条款。. 如何解锁 Microsoft 帐户

To use your microphone with apps on Windows 10, you'll need to turn on some permissions in Microphone settings. Then, you'll need to check your app permissions if you want to use your microphone with apps.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Hotmail เปลี่ยนชื่อเป็น Outlook.com แล้ว เรียนรู้วิธีการลงชื่อเข้าใช้เพื่อเข้าถึงบัญชีอีเมล Outlook.com, Hotmail, Live หรือ MSN ของคุณ