Learn how to download, install, and use the PC Health Check app to check your device's compatibility with Windows 11 and get tips to improve its performance.

The CONCAT function combines the text from multiple ranges and/or strings, but it doesn't provide delimiter or IgnoreEmpty arguments. CONCAT replaces the CONCATENATE function.However, the CONCATENATE function will stay available for compatibility with earlier versions of Excel.

Learn how to access Microsoft Store on Windows by selecting the icon on the taskbar or using the search box.

Select your profile picture at the top right of Teams. When your account manager opens, select your profile picture again.

了解如何安装 Windows 7 Service Pack 1 (SP1)。 包含有关如何获取下载、要求和其他内容的信息。

Training: Watch and learn how to use your Outlook inbox.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Immersive Reader advanced color support. In Immersive Reader, we've added many additional ways you can choose a page color.Selecting a page color can make text easy to scan with less eye strain. On the Immersive Reader tab click Page Color to see a 4x5 color picker.. Click More Colors to see additional color selection options such as Wheel, Sliders, Color Palettes, Image Palettes, and Pencils.

Note: The scan creates a backup file during the repair process.To change the default name or location of this backup file, in the Enter name of backup file box, enter a new name, or choose Browse to select the file you want to use. You may need to run the tool several times in order to repair your Outlook Data File.

准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。