Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Add sequential numbers to rows of data by dragging the fill handle to fill a column with a series of numbers or by using the ROW function.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

When you enable an add-in, it adds custom commands and new features to Microsoft 365 programs that help increase your productivity. Because add-ins can be used by attackers to do harm to your computer, you can use add-in security settings to help protect yourself.

Tip: If you have a Microsoft 365 Family subscription, people you've shared the subscription with can also set up a personalized email address with your connected domain.After you've set up your domain, people you've shared with will see an option to add a personalized email address in the premium features section of Outlook settings.

注意: 在Windows中获取驱动程序更新的最佳和最安全的方法始终是通过Windows 更新。如果在Windows 更新时遇到问题，则可能会看到 Update Windows 中的任何链接是否可帮助你先解决问题。

好友 是你希望通过群聊天、消息传递、游戏和查看其活动源与之交互的人员。 通过将玩家添加为好友，即可成为他们的“关注者”，直到他们也将你添加为好友。 您最多可以有 1,000 个 Xbox 好友。

Disk Management in Windows helps you perform advanced storage tasks like initializing a new drive and extending or shrinking volumes.

How to find the standard Windows 11 user file folders for documents, pictures, videos, music, and more.

Learn how to block someone or add email addresses to the safe senders list in Outlook on the web.