How to use the SUM function in Excel to add individual values, cell references, ranges, or a mix of all three.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

Learn how to use auto color management in Windows 11 to get accurate colors on your PC.

系统要求. 手机连接 体验从 Windows 电脑和 手机连接 开始。 从电脑中，可以使用预安装在设备上的连接至 Windows 应用或从 Google Play 或 Samsung Galaxy Store 下载的应用连接到选择 Android、Samsung、HONOR、OPPO 和华硕设备。

Learn how to renew your Microsoft 365 Family or Microsoft 365 Personal subscription online or from a retail store.

Live captions helps everyone, including people who are deaf or hard of hearing, better understand audio by providing automatic transcription. To make more content accessible to more people, live captions now has the ability to provide translations and will turn any audio that passes through your PC into a single English-language caption experience.

Learn how to manage and set device screen time limits on Windows, Xbox, and mobile devices connected through the Microsoft Family Safety app.

Learn how to download files or folders in OneDrive and OneDrive for Business.

Learn how to open, navigate, and troubleshoot File Explorer in Windows, with answers to common questions and support assistance.

Learn about HDR capabilities in Windows 11 to bring a wider range of colors and details to your display.