Microsoft made a commitment to provide 10 years of product support for Windows 7 when it was released on October 22, 2009. This 10-year period has now ended, and Microsoft has discontinued Windows 7 support so that we can focus our investment on supporting newer technologies and great new experiences.

Learn how to set up a connection to a proxy server on your Windows PC.

Windows Hello. Windows Hello 可使你通过你的面部、虹膜、指纹或 PIN 登录到你的设备、应用、在线服务和网络。 即使你的 Windows 设备可以使用 Windows Hello 生物识别，也不必这么做。

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Create a channel in Microsoft Teams by selecting Create channel from the menu next to the channel name.

Learn how to unfreeze your OneDrive account if it has been inactive over 12 months.

Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.

了解如何更改 Windows 中显示器的刷新率，以确定在屏幕上显示运动的平滑程度。

Explains how to sync your Google, Yahoo, iCloud, and IMAP mail, contacts, and calendar to the Microsoft Cloud.