Open Device Manager. By pressing submit, your feedback will be used to improve Microsoft products and services.

Find out how to change your printer's status from "offline" to "online" in Windows.

Find your Wi-Fi network password in Windows, so you can connect to your Wi-Fi network on other devices.

Learn how to switch Outlook from working offline to online with your mail server on Microsoft Support.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

How to use the COUNT function in Excel to count the number of cells that contain numbers, and to count numbers within a list of arguments.

Create Outlook Data Files (.pst) on your computer to save Outlook items by account, project, or to archive older items.

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

Use the status bar for simple counting in Excel, or use functions to count cells that contain data, are blank, or meet specific conditions or multiple criteria.

Outlook 网页版是组织使用的基于 Web 的 Outlook 版本。你需要使用工作或学校帐户登录才能访问此基于 Web 的 Outlook 版本。 你的工作或学校帐户通常由组织中的某人分配给你。