Information on how to download the Microsoft Mouse & Keyboard Center.

Accessing Credential Manager. Credential Manager lets you view and delete your saved credentials for signing in to websites, connected applications, and networks.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Switch to the new Teams and experience the fastest version of Teams yet, rebuilt from the ground up. With a performance-first mindset, the new Teams is faster, simpler, and more flexible than ever before.

IFS 函数检查是否满足一个或多个条件，且是否返回与第一个 TRUE 条件对应的值。 IFS 允许包含最多 127 对条件（测试是否为 True 及返回的结果）。 IFS 可以取代多个嵌套 IF 语句。

Learn how to share documents, links, and pictures with nearby devices using Bluetooth or Wi-Fi in Windows.

更改 Internet Explorer 设置 你可以在 Internet Explorer 中执行许多更改来自定义浏览体验。 若要查看所有设置和选项，请在桌面上Internet Explorer，选择"工具> Internet选项"。 重置 Internet Explorer 设置

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

Learn how to sign in or out of your Outlook.com, Hotmail, Live, or MSN email account with Microsoft Support's step-by-step guide.

随时了解 Microsoft Complete 购买设备时获取 Microsoft Complete 保护计划。 所有 Microsoft 设备和配件具有标准的有限保修。 Microsoft Complete 提供硬件扩展和意外损坏服务。