Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

Learn how to use your Outlook inbox effectively with Microsoft Support's training resources.

了解如何在电脑或 Mac 上安装、重新安装或激活 Microsoft 365 或 Office 2019。

In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if you prefer.

获取更改 Microsoft Edge、Internet Explorer 11、Google Chrome、Firefox 和 Safari 中的主页的步骤。

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Resetting Microsoft OneDrive can sometimes resolve sync issues. Follow the steps to reset your OneDrive.

You can easily insert a check mark (also known as a "tick mark") in Word, Outlook, Excel, or PowerPoint. These marks are static symbols. If you're looking for an interactive check box that you can click to check or uncheck, see: Add a check box or option button (Excel) or Make a checklist in Word. In your file, place the cursor where you want to insert the symbol.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

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