Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

Discover how to earn Microsoft Rewards points through various activities and redeem them for exciting rewards.

The dialog that appears varies depending on whether you had the Add Apps or Get Add-ins option available to you. If you selected Add Apps, the Apps dialog appears. If you selected Get Add-ins, the Add-Ins for Outlook dialog appears. Search for the add-in you want from the available list.

Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.

Suppose you want to find out how many times particular text or a number value occurs in a range of cells, there are several ways to count how often a value occurs.

Learn how to create an Xbox profile. You’ll need a Microsoft account to create an Xbox account. A Microsoft account is not the same thing as an Xbox account, although you can use the same email address for both.

Learn how to add Teams meetings to Outlook calendar using our step-by-step guide. Say goodbye to scheduling headaches and hello to seamless collaboration!

If you see a gray OneDrive icon, this means you are not signed in. If you cannot sign in to your OneDrive sync app, or the sync app says OneDrive is not connected, follow the steps below.

了解如何在 Excel 中使用函数 VLOOKUP 逐行查找表或区域中的数据。 我们的分步指南使 excel 中的 vlookup 变得简单高效。