This article explains how to zip and unzip files.

Add a new email account. Select Start , enter Mail, and choose the app from the results.

Get the steps for turning Windows Defender Firewall on or off.

Learn about file sharing over a network in Windows. Note: This article focuses on how to share files or folders over a Local Area Network (or LAN), such as connected computers within your home or workplace.If you are trying to find out how to share a file over the Internet, for example with a friend or family member, OneDrive provides easy ways to accomplish this.

How to use the COUNTIF function in Excel to count the number of cells that meet values you set.

安装 Windows 11 在针对你的特定电脑测试和验证 Windows 11 升级后，Windows 更新将指示它已准备好安装。 若要检查 Windows 11 是否已为你的设备准备就绪，请转到“开始” “设置” >“更新和安全性” >“Windows 更新”，然后选择“检查更新”。 如果升级适用于你的设备，并且想要继续，请下载并安装它。

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

To use your camera with apps on Windows 11, you'll need to turn on some permissions in Camera settings. Then, you'll need to check your app permissions if you want to use your camera with apps.

Learn how to enable virtualization through the UEFI (or BIOS) of your PC to run the Windows Subsystem for Android or Windows Subsystem for Linux.

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: